The Effect of Different Organic and Chemical Fertilizers and their Combined Application on the Quantity and Quality Characteristics and Yield of Tomato
Long-term use of chemical fertilizers can cause many adverse effects. In addition, excessive consumption of chemical fertilizers can lead to decreased food safety and low quality of vegetables, such as the accumulation of nitrates in plants. Today, using organic fertilizers is an efficient way to achieve sustainable agricultural development. The release rate of nutrients from organic fertilizers is slow and hardly exceeds the absorption capacity of plants compared to chemical fertilizers.
Intensive agriculture, despite high production, has adverse environmental effects, mainly due to the use of pesticides and chemical fertilizers. Therefore, we need alternative agricultural systems that are more economically and environmentally sustainable to produce crops. One of the sustainable methods in the production of agricultural products is intercropping. Intercropping of two or more species in a plot of land can increase biodiversity and resource utilization as agricultural perspective, which in turn can lead to increased yield stability. Intercropping uses resources more efficiently than monoculture, preventing the growth and spread of weeds by shading and suffocating weeds, and in some cases with allelopathic. Intercropping of cereals and legumes is recommended for the development of sustainable food production systems, especially in planting systems based on reduced consumption of foreign inputs. The importance of these systems depends on the nitrogen stabilized by the legumes. The aim of this experiment was to study the effects of row intercropping of barley and vetch and different levels of ammonium nitrate fertilizer on weed biomass, yield components and yield of two species in Karaj climatic condition.
In the pursuit of a resilient and progressive agricultural system, the incorporation of diverse fertilizers is deemed essential. This practice not only enhances product quality but also aids in cost reduction. However, over-reliance on a specific type of input can inadvertently lead to unintended repercussions. The unrestricted utilization of chemical fertilizers, for instance, can precipitate adverse outcomes such as imbalanced pH levels, the accumulation of heavy elements, soil structure deterioration, and environmental contamination. Conversely, organic fertilizers, while environmentally friendly, often release nutrients at a slower rate, potentially disrupting optimal plant growth. To attain a balanced and sustainable agricultural approach, the combined application of organic and chemical fertilizers is advocated. Moreover, harnessing the biological potential inherent in soil ecosystems, including beneficial microbial communities encompassing bacteria and fungi, emerges as a promising avenue in cultivating sustainable agriculture. Acknowledging the adverse impact of late-season heat stress on wheat production in Khuzestan and recognizing the significance of reducing chemical fertilizer usage while augmenting organic and biological fertilizers to foster ecological health, this experiment undertakes the exploration of the effects of a synergistic approach. Specifically, it delves into the combined utilization of nitrogen and compost fertilizers, complemented by the incorporation of plant growth-promoting rhizobacteria. This endeavor aims to shed light on how this combined strategy operates within the context of terminal heat stress, assessing its influence on the physiological attributes and yield of the wheat cultivar Chamran 2.
Applying innovative nanotechnology in agriculture is considered as one of the promising approaches to obtain significant increases of crop yield. Nanoparticles (NPs) are considered potential agents for agriculture as fertilizers and growth enhancers and using of nano-fertilizers has led to an increasing in the efficiency of nutrients, the correct management of fertilizer consumption, and a reduction of the frequency of fertilizer application. Stimulants are compounds that initiate signals for cells to increase or decrease the production of secondary metabolites and plant defense response. Stimulants such as Putrescine play a role in regulating various plant physiological processes. In this regard, considering the importance of using new technologies, including nanotechnology, in sustainable agriculture to increase the quantitative and qualitative performance of agricultural products, especially oil-medicinal plants, and the lack of sufficient information about the use of iron nanoparticles and polyamine putricine in Camelina plant nutrition, The effect of foliar spraying of these stimulants on functional, morphological and physiological traits of Camelina plant (Soheil veriety) was evaluated.
Salinity is one of the major constraints to wheat growth, which hampers production, causing yield loss in arid and semi-arid regions. Reductions in growth resulting from high salinity are because of both osmotic stress, inducing a water deficit, and the effects of excess Na+ and Cl– ions on critical biochemical processes. Salt stress induces a significant reduction in photosynthesis through the reduction of leaf area and photosynthetic pigments. Several strategies have been developed to decrease the toxic effects caused by high salinity on plant growth. Among them, the use of plant growth-promoting rhizobacteria (PGPR) such as Pseudomonas and Mycorrhiza play an important role in yield improvement. Many studies have been published on the beneficial effects of bacterial inoculation on plant physiology and growth under salt stress. One of the common hypotheses employed in most of the studies conducted under salinity stress was the lowering of ethylene level by the ACC-deaminase activities of PGPR and improved plant growth and yield under salinity stress.
It was reported that the application of Pseudomonas spp. improved plant growth by decreasing the uptake of Na+ and increasing the activities of antioxidant enzymes under salinity stress. The selective uptake of K+ as opposed to Na+ is considered one of the important physiological mechanisms contributing to salt tolerance in many plant species. Inoculation with PGPR significantly decreased Na+ uptake and increased K+ content and enhanced levels of K+ that could be to mitigate oxidative stress imposed by higher salinity. Some researchers have reported that PGPR species like Azotobacter and Pseudomonas increased the growth and biomass of canola (Brassica napus L.) under salinity stress.
A Better understanding of wheat physiological responses under salinity may help in programs in which the objective is to improve the grain yield under salinity stress. Therefore, this study aimed to evaluate the physiological, stomata conductance, along with root and shoot Na+/ K+ ratios) of wheat to cycocel and PGPR application under salinity stress.
During the 1950s and 1960s, the green revolution led to a dramatic increase in global food and fodder production to eliminate hunger and boost food security. This production enhancement was accompanied by an intensified agricultural and chemical input consumption and increased cultivated area and mechanization. Although yield per unit area has improved in most crops, concerns about food security for the world's rising population are still significant. Guaranteeing food security in the future will necessitate a shift in management approaches to boost output, agroecosystem sustainability, and stability and reduce the environmental harm caused by agriculture. The first step to achieving sustainability and ecological intensification in agricultural systems is to have a comprehensive agroecological analysis of agricultural systems in each region. Hence, the complete evaluation and analysis of agroecological features according to their type in each region is necessary for establishing an optimal management technique. After analyzing the present state of each region's shared ecosystems, the optimal strategy for boosting production stability must be devised and implemented.
South of Iran has been located in the dry belt and desert strip thus water stress has always been one of the serious problems in its agriculture (Buzarjomehri et al., 2020). Intercropping is the cultivation of two or more plant species in a specific land and growing season, which is important in agricultural systems with limited resources and low input (Brooker et al., 2015). Due to the differences in the rooting depth, lateral expansion, and root density of cereals and legumes, they have been the best candidates for intercropping traditionally for limited soil water and nutrient availability environments (Babalola, 1980; Haynes, 1980). Application of bio-fertilizers (PGPR bacteria) that have nitrogen (N) fixation and phosphorus (P) solubilizing activity (Azospirillum brasilense and Pseudomonas fluorescence, respectively) is a promising approach for obtaining N, P, and water-restricted areas (Tien et al, 1979; Barea, 2015). Organic manures enhance soil water holding capacity and serve as excellent slow-release sources of nitrogen (N) and phosphorus (P) in the soil (Risse et al., 2006). This study aimed to investigate the effect of different fertilizer systems (chemical, integrated, and bio-organic) on triticale grain yield and its components in sole and intercropped triticale in triticale/chickpea system under late season water stress in a hot and dry area of southern Iran (Fars province - Darab).
Nitrogen (N) is one of the main limiting factors in agroecosystems all around the world. However, high application rates of N fertilizers would lead to negative environmental consequences. Reduction of N fertilizers consumption decreases production costs and environmental pollution. Therefore, N efficiency to be enhanced due to the high N fertilizer cost and required measures to prevent the waste of N. Cultivation of diverse crop cultivars with higher resources absorption and utilization efficiency is one of the major approaches in sustainable agriculture that would result in the effective use of natural and chemical inputs and reduce significantly the environmental risks. Quchan City is one of the potato production poles in Khorasan Razavi province. In this region, large amounts of N fertilizers annually are consumed in the potato agroecosystem. Therefore, the potato of the present study was evaluating N uptake and utilization efficiency, and finally, N uses efficiency in the potato agroecosystem of Quchan.
There is an urgent need to increase per capita food production to compete with high population growth while maintaining environmental sustainability. Because nitrogen plays a vital role in food production for humans and livestock, nitrogen management is essential in food production. In most cropping systems, nitrogen management seems to be a major challenge due to its high mobility and natural tendency for losses from the soil-plant system to the environment. Soil organic carbon plays a key role in improving soil ecological conditions. Adding organic matter to the soil is an excellent tool for improving physical, chemical and biological conditions and is almost always desirable. Soil organic carbon stock of crop ecosystems may be increased by improving farming practices. The application of green manure, fertilizer and the return of crop straw into the soil are known as management operations to increase soil organic carbon. Fertilizers, especially nitrogen, increase crop yield, and organic carbon is returned to the soil through roots and debris, which in most cases leads to increased soil organic carbon.
Intensive agriculture, despite high production, has adverse environmental effects, mainly due to the use of pesticides and chemical fertilizers. Therefore, we need alternative agricultural systems that are more economically and environmentally sustainable to produce crops. One of the sustainable methods in the production of agricultural products is intercropping. Intercropping of two or more species in a plot of land can increase biodiversity and resource utilization as agricultural perspective, which in turn can lead to increased yield stability. Intercropping uses resources more efficiently than monoculture, preventing the growth and spread of weeds by shading and suffocating weeds, and in some cases with allelopathic. Intercropping of cereals and legumes is recommended for the development of sustainable food production systems, especially in planting systems based on reduced consumption of foreign inputs. The importance of these systems depends on the nitrogen stabilized by the legumes. The aim of this experiment was to study the effects of row intercropping of barley and vetch and different levels of ammonium nitrate fertilizer on weed biomass, yield components and yield of two species in Karaj climatic condition.
In the pursuit of a resilient and progressive agricultural system, the incorporation of diverse fertilizers is deemed essential. This practice not only enhances product quality but also aids in cost reduction. However, over-reliance on a specific type of input can inadvertently lead to unintended repercussions. The unrestricted utilization of chemical fertilizers, for instance, can precipitate adverse outcomes such as imbalanced pH levels, the accumulation of heavy elements, soil structure deterioration, and environmental contamination. Conversely, organic fertilizers, while environmentally friendly, often release nutrients at a slower rate, potentially disrupting optimal plant growth. To attain a balanced and sustainable agricultural approach, the combined application of organic and chemical fertilizers is advocated. Moreover, harnessing the biological potential inherent in soil ecosystems, including beneficial microbial communities encompassing bacteria and fungi, emerges as a promising avenue in cultivating sustainable agriculture. Acknowledging the adverse impact of late-season heat stress on wheat production in Khuzestan and recognizing the significance of reducing chemical fertilizer usage while augmenting organic and biological fertilizers to foster ecological health, this experiment undertakes the exploration of the effects of a synergistic approach. Specifically, it delves into the combined utilization of nitrogen and compost fertilizers, complemented by the incorporation of plant growth-promoting rhizobacteria. This endeavor aims to shed light on how this combined strategy operates within the context of terminal heat stress, assessing its influence on the physiological attributes and yield of the wheat cultivar Chamran 2.
Applying innovative nanotechnology in agriculture is considered as one of the promising approaches to obtain significant increases of crop yield. Nanoparticles (NPs) are considered potential agents for agriculture as fertilizers and growth enhancers and using of nano-fertilizers has led to an increasing in the efficiency of nutrients, the correct management of fertilizer consumption, and a reduction of the frequency of fertilizer application. Stimulants are compounds that initiate signals for cells to increase or decrease the production of secondary metabolites and plant defense response. Stimulants such as Putrescine play a role in regulating various plant physiological processes. In this regard, considering the importance of using new technologies, including nanotechnology, in sustainable agriculture to increase the quantitative and qualitative performance of agricultural products, especially oil-medicinal plants, and the lack of sufficient information about the use of iron nanoparticles and polyamine putricine in Camelina plant nutrition, The effect of foliar spraying of these stimulants on functional, morphological and physiological traits of Camelina plant (Soheil veriety) was evaluated.
Salinity is one of the major constraints to wheat growth, which hampers production, causing yield loss in arid and semi-arid regions. Reductions in growth resulting from high salinity are because of both osmotic stress, inducing a water deficit, and the effects of excess Na+ and Cl– ions on critical biochemical processes. Salt stress induces a significant reduction in photosynthesis through the reduction of leaf area and photosynthetic pigments. Several strategies have been developed to decrease the toxic effects caused by high salinity on plant growth. Among them, the use of plant growth-promoting rhizobacteria (PGPR) such as Pseudomonas and Mycorrhiza play an important role in yield improvement. Many studies have been published on the beneficial effects of bacterial inoculation on plant physiology and growth under salt stress. One of the common hypotheses employed in most of the studies conducted under salinity stress was the lowering of ethylene level by the ACC-deaminase activities of PGPR and improved plant growth and yield under salinity stress.
It was reported that the application of Pseudomonas spp. improved plant growth by decreasing the uptake of Na+ and increasing the activities of antioxidant enzymes under salinity stress. The selective uptake of K+ as opposed to Na+ is considered one of the important physiological mechanisms contributing to salt tolerance in many plant species. Inoculation with PGPR significantly decreased Na+ uptake and increased K+ content and enhanced levels of K+ that could be to mitigate oxidative stress imposed by higher salinity. Some researchers have reported that PGPR species like Azotobacter and Pseudomonas increased the growth and biomass of canola (Brassica napus L.) under salinity stress.
A Better understanding of wheat physiological responses under salinity may help in programs in which the objective is to improve the grain yield under salinity stress. Therefore, this study aimed to evaluate the physiological, stomata conductance, along with root and shoot Na+/ K+ ratios) of wheat to cycocel and PGPR application under salinity stress.
During the 1950s and 1960s, the green revolution led to a dramatic increase in global food and fodder production to eliminate hunger and boost food security. This production enhancement was accompanied by an intensified agricultural and chemical input consumption and increased cultivated area and mechanization. Although yield per unit area has improved in most crops, concerns about food security for the world's rising population are still significant. Guaranteeing food security in the future will necessitate a shift in management approaches to boost output, agroecosystem sustainability, and stability and reduce the environmental harm caused by agriculture. The first step to achieving sustainability and ecological intensification in agricultural systems is to have a comprehensive agroecological analysis of agricultural systems in each region. Hence, the complete evaluation and analysis of agroecological features according to their type in each region is necessary for establishing an optimal management technique. After analyzing the present state of each region's shared ecosystems, the optimal strategy for boosting production stability must be devised and implemented.
South of Iran has been located in the dry belt and desert strip thus water stress has always been one of the serious problems in its agriculture (Buzarjomehri et al., 2020). Intercropping is the cultivation of two or more plant species in a specific land and growing season, which is important in agricultural systems with limited resources and low input (Brooker et al., 2015). Due to the differences in the rooting depth, lateral expansion, and root density of cereals and legumes, they have been the best candidates for intercropping traditionally for limited soil water and nutrient availability environments (Babalola, 1980; Haynes, 1980). Application of bio-fertilizers (PGPR bacteria) that have nitrogen (N) fixation and phosphorus (P) solubilizing activity (Azospirillum brasilense and Pseudomonas fluorescence, respectively) is a promising approach for obtaining N, P, and water-restricted areas (Tien et al, 1979; Barea, 2015). Organic manures enhance soil water holding capacity and serve as excellent slow-release sources of nitrogen (N) and phosphorus (P) in the soil (Risse et al., 2006). This study aimed to investigate the effect of different fertilizer systems (chemical, integrated, and bio-organic) on triticale grain yield and its components in sole and intercropped triticale in triticale/chickpea system under late season water stress in a hot and dry area of southern Iran (Fars province - Darab).
Nitrogen (N) is one of the main limiting factors in agroecosystems all around the world. However, high application rates of N fertilizers would lead to negative environmental consequences. Reduction of N fertilizers consumption decreases production costs and environmental pollution. Therefore, N efficiency to be enhanced due to the high N fertilizer cost and required measures to prevent the waste of N. Cultivation of diverse crop cultivars with higher resources absorption and utilization efficiency is one of the major approaches in sustainable agriculture that would result in the effective use of natural and chemical inputs and reduce significantly the environmental risks. Quchan City is one of the potato production poles in Khorasan Razavi province. In this region, large amounts of N fertilizers annually are consumed in the potato agroecosystem. Therefore, the potato of the present study was evaluating N uptake and utilization efficiency, and finally, N uses efficiency in the potato agroecosystem of Quchan.
There is an urgent need to increase per capita food production to compete with high population growth while maintaining environmental sustainability. Because nitrogen plays a vital role in food production for humans and livestock, nitrogen management is essential in food production. In most cropping systems, nitrogen management seems to be a major challenge due to its high mobility and natural tendency for losses from the soil-plant system to the environment. Soil organic carbon plays a key role in improving soil ecological conditions. Adding organic matter to the soil is an excellent tool for improving physical, chemical and biological conditions and is almost always desirable. Soil organic carbon stock of crop ecosystems may be increased by improving farming practices. The application of green manure, fertilizer and the return of crop straw into the soil are known as management operations to increase soil organic carbon. Fertilizers, especially nitrogen, increase crop yield, and organic carbon is returned to the soil through roots and debris, which in most cases leads to increased soil organic carbon.
The most important problem that threatens food security of any country and the world is the lack of adequate water resources, so one of the ways to deal with this crisis is to use plants with low water requirements and high water use efficiency. Among the plants, we can name Quinoa, which is one of the plants that has been less studied and exploited in Iran. Since the planting date has the greatest impact on the physiological characteristics of the crop compared to other cropping treatments, so choosing the appropriate planting date can also create the greatest correlation between plant growth trends and climatic conditions. Undoubtedly, the use of biological fertilizers, in addition to the positive effects it has on all soil properties, is also economically, environmentally and socially fruitful and can be a suitable and desirable alternative to chemical fertilizers. Therefore, the aim of this study was to determine the response to deficit irrigation, planting date and application of different biofertilizers in quinoa.
Introduction
Nowadays, the cultivation of plants adapted to adverse conditions, such as drought and salinity, in the country has been considered. Meanwhile, Kochia scoparia, one of the forgotten plants, due to its classification in the group of halophytes, has specific characteristics suitable for cultivation in low-water and saline areas (Salehi, Kafi, & Kiani, 2012). This plant is known as an important annual forage crop, and its grains also have high nutritional value and oil, which can be considered for future industrial applications (Salehi et al., 2012). Studies on the salinity tolerance of the Kochia plant have shown that it is suitable for cultivation in saline areas, and in terms of quantity and quality, can compete with conventional forage plants. The use of natural organic materials, such as humic acid, has received more attention. These materials, as part of soil organic matter, are influenced by physical, chemical, and microbiological changes in biological molecules (Sabzevari & Khazaei, 2009; Dong, Córdova-Kreylos, Yang, Yuan, & Scow, 2009). Additionally, nitrogen is the most important element needed for plant growth and development. It is also a key component in many biological compounds, including proteins, nucleic acids, some hormones, and chlorophyll. Nitrogen plays an essential role in photosynthetic processes and the final function of plants (Kaur, Gupta, & Kaur, 2002; Taiz, Zeiger, Møller, & Murphy, 2015). As a result of this research, a combination of nitrogen and humic acid can be used as nutritional resources in salt stress conditions.
Materials and Methods
This experiment was conducted in the form of split plots based on the randomized complete block design with three replications in the Saline Research Farm of Ferdowsi University of Mashhad in the 2015 growth season. The main plot included drought stress with a four-week interruption of irrigation at three levels of control (irrigation until the end of the growing season), after establishment (50 days after planting), the beginning of flowering (71 days after planting) and late flowering (82 days after planting) The subplot was included nitrogen application at three levels of zero, 100 and 200 kg.ha-1 from urea fertilizer source. The optimum level of humic acid (2 per thousand) was done as seed at the time of planting for all treatments.
Results and Discussion
The results showed that the drought stress during vegetative and reproductive growth stages had a negative effect on the Kochia plant. However, its effect in the early stages of vegetative growth (after establishment) was greater than the stress at the end of the season (late flowering). Drought stress has a negative effect on Kochia grain yield by reducing the concentration of chlorophyll a, altering the chlorophyll a to b ratio, decreasing carotenoid concentration, and affecting relative leaf water content. However, seed treatments of humic acid and its combination with 100 kg.ha-1 nitrogen level by increasing th
In recent decades, the need for increased food production has resulted in the expansion of intensified agriculture practices characterized by high consumption of inputs, thereby reducing agricultural sustainability. The agricultural sector's contribution to the world's energy consumption, ecological footprint, and greenhouse gas emissions has grown substantially. Emissions of greenhouse gases have negative ecological effects, including climate change, global warming, and diminished sustainable development. In this sector, energy analysis and greenhouse gas emissions in ecosystems are the most common methods for assessing sustainability. This study was conducted to evaluate the sustainability of canola agroecosystems by analyzing energy consumption, carbon footprint, and greenhouse gas emissions.
Since the development of crop cultivation and their yield depend on irrigation and since drought is one of the features of our country, one of the solutions to deal with these problems is the implementation of applied research in the field of stress-resistant plants cultivation such as quinoa. Also, considering the important role of potassium and zinc elements in the plant, providing a sufficient amount of these elements under drought stress can be effective in increasing the plant's resistance to this type of stress. Considering the genetic differences of plants and their different reactions in the face of environmental stress such as drought stress, and different fertilization of genotypes, it seems necessary to carry out this research to investigate the application of potassium and zinc chelates on the morpho-physiological and yield indicators of three quinoa genotypes under drought stress conditions in Razavi Khorasan climate.
The quantity and quality of forage plants are beneficial and useful due to their role in animal husbandry, reproduction and other livestock products. Due to the limitation of water resources, water-deficit as a significant biotic stress is the most severe threat to world food security and is responsible for many yield losses. Plants constantly modify their physiological processes in response to various biotic and abiotic stress to regulate the balance between plant growth and defense response. Many researchers have documented that plant nutrients are involved in biological processes of plants. It has been stated that the use of silicon by increasing the ability to absorb water can be useful to improve drought tolerance of sorghum, sorghum can with the help of silicon extract more water from dry soil and maintain more stomatal conductance.
The excessive use of chemical fertilizers is a leading cause of environmental pollution in the agriculture sector. Therefore, optimizing fertilizer application is a crucial approach to boost production while minimizing environmental harm. On the other hand, application of chemical fertilizers along with manure can be considered as the proper management system that led to reduce the amount of chemical fertilizers and adverse effects on environment and also improve nutrition for plants. Response-surface methodology is a powerful tool to optimize production resources which decreases cost and time of the experiments by reducing number of them. Therefore, the aim of the study was optimization of chemical fertilizers of nitrogen and phosphorus along with manure application in fodder maize production.
The excessive use of chemical fertilizers is a leading cause of environmental pollution in the agriculture sector. Therefore, optimizing fertilizer application is a crucial approach to boost production while minimizing environmental harm. On the other hand, application of chemical fertilizers along with manure can be considered as the proper management system that led to reduce the amount of chemical fertilizers and adverse effects on environment and also improve nutrition for plants. Response-surface methodology is a powerful tool to optimize production resources which decreases cost and time of the experiments by reducing number of them. Therefore, the aim of the study was optimization of chemical fertilizers of nitrogen and phosphorus along with manure application in fodder maize production.
Seed pretreatment is one of the simple techniques that can increase seed vigor and seedling establishment, and thus plant yield. Seed pretreatment can be done with water (hydropriming), inorganic salts such as potassium nitrate (halopriming), and growth regulators such as salicylic acid (hormone priming) and ascorbic acid (vitamin priming). Another effective factor in producing strong seeds is proper nutrition of the mother plants. Proper nutrition of the maternal plant in the form of foliar sprays with essential elements leads to the production of high-quality seeds, which affects germination and yield. Considering the positive role of seed pretreatment in improving germination rate and seedling establishment, and increasing seed yield of various plants as a result of foliar application of growth regulators and inorganic salts, this experiment was conducted to study the effect of seed pretreatment and foliar spraying with salicylic acid, ascorbic acid and potassium nitrate on improving physiological and biochemical characteristics, yield and yield components of borage.
Introduction
In conventional formulations such as emulsifiable concentrates (EC), wettable powders, soluble liquids, etc., complete availability of the active agent is usually considered immediate or rapid following usage. Application rates of these formulations of pesticides are greater than the minimum threshold concentration to counter losses from sorption, volatilization, photodecomposition, microbial and chemical degradation, and leaching. Controlled-release technology for pesticides could reduce environmental damage and increase efficiency by enhancement of delivery to the site of action. This survey was conducted to determine the possibility of EPTC and trifluralin efficiency improvement by using microencapsulated formulation (MC) that were first synthesized in Iran.
Materials and Methods
Two separated greenhouse experiments were conducted in Tirtash Research and Education Center (Mazandaran–Iran) in 2014. The experiments were carried out in a factorial arrangement based on a randomized complete block design with three replications. The Microencapsulated formulation of EPTC and trifluralin herbicides were compared with emulsifiable concentrate formulation (Eradicane 82% and Treflan 48%) in 0 (control), 25, 50, 75 and 100 percent of active ingredient (a.i.) (4.92 and 1.2 kg a.i./ha, recommended doses for EPTC and trifluralin, respectively). For this purpose, the soil of pots were infested with the seed of Green foxtail (Setaria viridis) and Redroot pigweed (Amaranthus retroflaxus). The responses of weeds to treatments, specifically seedling number, were analyzed using ANOVA tests, non-linear regression, and fitting to three parameters of Weibull and log-logistic equations. This analysis was based on Akaike's Information Criterion, Residual Standard Error, and Lack-of-Fit Test indices in the R3.4.1 program. The effective dose were determined for 10, 50 and 90 percent of weed control (ED10, ED50 and ED90, respectively). Relative potency index (R) of formulation types were determined by divided ED50 of EC into MC formulations.
Results and Discussion
According to the results of the experiments, the formulation type had a significant effect on the weed numbers. The MC formulations of EPTC increased Green foxtail and Redroot pigweed control efficiencies. The ED10, ED50 and ED90 decreased from 0.72, 2.94 and 7.18 kg a.i.ha-1 in the EC to 0.41, 1.87 and 4.89 kg a.i.ha-1 in the MC formulation for Green foxtail and 1.08, 3.29 and 10.02 kg a.i.ha-1 in the EC to 0.57, 2.36 and 9.67 kg a.i.ha-1 in the MC formulation for Redroot pigweed. The R index of EPTC in Green foxtail and Redroot pigweed control were 1.57 and 1.39, respectively. Weed control increased as trifluralin dosage increased in both of the formulation types, although in higher doses of the MC, weed control efficiency increased more than the EC formulation. So the efficiency of the MC formulations depended on application dosages. The ED10, ED50 and ED90 of Green foxtail were 0.14, 0.55 an
Fennel is a cross-pollinating plant and one of the most important medicinal plants of the Apiaceae family, whose essential oil is widely used in various pharmaceutical, food, and cosmetic industries. Fennel originated from the Mediterranean region and is a biennial or perennial species. Fennel essential oil has been demonstrated to have antioxidant, anti-cancer, antibacterial, antifungal, and analgesic effects. Improving yield is one of the important goals of breeding, and the use of heterosis as one of the powerful tools to improve yield has always been of interest to breeders. This study was conducted to evaluate seed yield and yield components of three synthetic cultivars of fennel and compere with eight parental populations.
Grasspea (Lathyrus sativus L.) is one of the most important forage crops in the world. It contains 12 to 20% protein. Silicon (Si) existing in the Earth’s crust is classified as the most abundant element after oxygen. Although silicon is not considered an essential element for plant growth, but a number of studies have reported that it as an important factor in plants that plays an important role in the resistance mechanisms of plants against environmental stress. Also, it plays a crucial physiological role in photosynthetic rate and chlorophyll content. One of the most effective factors in increasing the Grasspea biomass is seed inoculation with plant growth-promoting rhizobacteria (PGPR). Some of the benefits provided by PGPR are the ability to produce gibberellic acid, cytokinins and ethylene, N2 fixation, solubilization of mineral phosphates and other nutrients. Numerous studies have shown a substantial increase in dry matter accumulation via inoculation with PGPR. Some researchers reported that seed inoculation with PGPR enhanced relative water content and photochemical efficiency of PSII lathyrus under water limitations. Therefore, the aim of this study was to evaluate the effects of nano silicon and seed inoculation with plant growth-promoting rhizobacteria on biomass, nodulation and some physiological traits of Grasspea.
Maize (Zea mays L.) is one of the most important cereals after wheat and rice in the tropical and temperate regions of the world. Also, its mean production is 8 ton ha-1. Moreover, the total area of under cultivation is 132572 hectares in Iran. Crop simulation models can play an important role in improving agricultural production systems in many developing countries. Crop models can simulate plant growth processes and grain yield instead of conducting several years of field experiments. On the other hands, crop simulation models should be calibrated and evaluated with independent data sets under different climatic conditions. Therefore, the purpose of this research was evaluation of the APSIM model for simulation of growth, development and yield of maize hybrids in Kerman province under different amounts of nitrogen.
Salinity stands as a significant environmental stressor that profoundly curtails the growth and yield of crop plants. This adversity also extends to the impairment of pigments and plastids, leading to diminished chlorophyll indices, rates, and grain-filling durations. To counteract the deleterious impact of such stressors on plant growth, a spectrum of strategies has been devised. Prominent among these strategies are plant growth-promoting rhizobacteria, exemplified by azospirillum, and the utilization of nanoparticles like zinc and silicon. These factors play a pivotal role in elevating yield outcomes. Zinc's pivotal involvement spans protein metabolism, photosynthetic activities, and diverse physiological traits within plants. Particularly noteworthy is its contribution to rectifying zinc deficiency, a particularly critical concern in plants cultivated in high-pH soils. Notably, recent research has illuminated the potential of applying minute quantities of micronutrients, notably zinc via foliar spraying, in bolstering plant resilience against salt stress. Likewise, silicon emerges as a supplemental micronutrient that imparts heightened resistance to environmental stresses, fostering increased resilience within biological systems. Therefore, this study aimed to evaluate the effects of application of plant growth-promoting rhizobacteria and nanoparticles (zinc and silicon) on the yield, photosynthetic pigments, and filling components of triticale grain under salt stress.
The increasing demand for medicinal plants in traditional medicine as well as the pharmaceutical industry has created the need for some plants to be grown commercially, but the lack of soil moisture poses a serious threat to their production. Planting method can affect the emergence and growth rate of crop and lead to decrease water consumption and increase irrigation water efficiency as yield increases. Roselle (Hibiscus sabdariffa L.) is one of the drought tolerant plants. Saving water consumption by cultivating drought tolerant plants has been proposed as a strategy to combat drought. It should be noted, however, that irrigation without proper planning can reduce the growth and production of crops. In this regard, determining time of deficit irrigation with minimum damage is an appropriate solution that achieves optimum yield while saving water consumption. The aim of this study was to investigate the effect of different irrigation regimes and planting method on some physiological traits, yield and water use efficiency of Roselle plant.
Introduction
Celiac disease is one of the most common digestive disorder. Chicken nugget is one of the most popular instant and ready-to-eat foods, and wheat flour is one of its main coating ingredients, which contains approximately 60% gluten. Quinoa is a gluten-free grain, as a good source of dietary fiber, has various applications in the meat products processing system as a stabilizer, fat substitute, structural components, etc. The addition of hydrocolloids also helps to improve the rheological properties of gluten-free products. The purpose of this research was to evaluate the effect of quinoa-corn mixed flour in the preparation of nugget batter as a gluten-free combination as an alternative to wheat flour, and also to investigate the effect of adding HPMC hydrocolloid on the final product characteristics. In this research, a rotatable central composite design was used to investigate the effect of two independent variables including different proportions of quinoa-corn flour (0-100, 50-50, 100-0%) and different levels of hydrocolloid (0.5-1-1.5%) on the quality characteristics of nugget. With the increase of quinoa replacement level, moisture content (0.60), batter pick up (138) and redness level 5.5 (a*) increased, and oil content (11), hardness (7.5), brightness level 41(L*), yellowness level 20(b*) decreased. The increase of HPMC also caused an increase in moisture content (0.59), brightness level (L*) of 0.39, batter pick up (137) and decrease in oil content (10) and hardness (7). Optimum conditions for the production of gluten-free nugget were determined by considering the optimal amounts for the production of high quality and healthy products, contained 90% quinoa and HPMC at a level of about 1%.
Materials and Methods
Corn flour was purchased from the pilot of Ferdowsi University of Mashhad. The de-saponified quinoa was prepared from Kashmir and then ground. In order to make the grains more uniform, both flours were sieved using a 30 mesh. Hydrocolloid hydroxypropyl methylcellulose was also prepared from Kian Shimi Mashhad. Oyla frying oil was used for frying the samples.
The chicken nugget formulation was a mixture of 86% minced chicken, 10% onion, 1.5% garlic powder, 1% salt and 1.5% pepper. After complete mixing, these materials were poured into a freezer bag until a homogeneous and uniform mixture was obtained, and they were flatted until they reached the desired thickness (1 cm). Plastics containing chicken paste were stored in the freezer for 2 hours to facilitate cutting. Then molding was done with a circular mold with a diameter of 4 cm (Dehghan Nasiri et al., 2012).The batter formulation consisted of flour, water, baking powder, salt and hydrocolloids. In order to investigate the effect of quinoa and corn flours, and hydrocolloids, these substances were added to nugget water paste in different percentages (quinoa-corn ratio: 0-100, 50-50, 0-100 and hydrocolloids at the level of 1-1 / 5 -0.5%) and then mixed with water by mix
Drought stress and consequent lack of available water for plants is one of the main causes of accumulation of reactive oxygen species (ROS) in various organs of plants, which is effective in reducing the yield of cereals such as wheat. The antioxidant system, which contains various enzymes and genes, is responsible for removing and detoxifying plants from ROS. Unfortunately, genes responding to drought stress and their enzymatic activities associated with spike and flag leaf of wheat have received less attention. Therefore, in the present study, photosynthetic parameters, key enzymes of the antioxidant system, and expression analysis of some genes involved in this system under field capacity (FC) and drought stress (DS) conditions in spike and flag leaves of wheat were investigated.
Water is now the main limiting factor for crop production in arid and semi-arid regions. Water-cut or irrigation interruption has been suggested as one of the main strategies agro-technique to get the most benefit from limited water resource available. In this regard, plant growth stage, time of stress induction and the genotype are the main key factors to determine the degree of success. Canola is one of the most important oil crop. It can survive some degree of water stress while there is a need for research to find the most appropriate genotypes for plantations in water-limited areas.
The effect of salinity stress on the quantity and quality of crop production highlights the importance of managing and reducing the damage caused by this stress factor in agriculture. Increasing soil salinity and decreasing fertility of arable lands is one of the major problems in saline areas. Cultivation of salt-tolerant crops which can increase soil fertility could be effective in the sustainable production of these lands. Studying photosynthesis and its related factors could provide appropriate physiological views in understanding plant behavior against salinity stress. The present study was conducted to assess the salinity tolerance of chickpea genotypes for cultivation in saline areas.
The agricultural systems are facing numerous challenges in maintaining and providing food security. Achieving this goal, considering the growing global population is possible through the application of sustainable agricultural principles to increase crop yield and reduce environmental costs. The widespread use of chemical inputs, particularly nitrogen fertilizers, by farmers globally to enhance yields has resulted in numerous environmental hazards, including soil and groundwater pollution. Intercropping systems emerge as a viable strategy to augment yield, curtail reliance on chemical fertilizers, and safeguard the environment. Enhancing the yield and quality of forage has become a paramount concern in the agricultural sector in recent times. Various approaches exist to achieve this objective, among which intercropping cereals and legumes stands out as a promising solution. One of the most sustainable farming methods in saline and arid lands is drying livestock products using salt-tolerant plants, which can also be beneficial for farmers.
The great importance of identifying, studying, evaluating, and protecting native ecotypes of medicinal plants as human heritage, collecting agricultural medicinal plants and ecological evaluation of their native ecotypes, and introducing their compatible ecotypes is a necessity for farmers. Considering the few studies in the field of the agricultural role of non-native plants such as Dragon's head in Iran to meet the country's nutritional needs, the present research aims to study and evaluate the performance of local medicinal and multi-purpose plant stands of urban sycamore and also to obtain new scientific materials in the case of these local masses has been done in the research farm of University of Tabriz Faculty of Agriculture. It is necessary to explain that in recent years, due to the crisis of water shortage and drought, this plant is in line with changing the cultivation pattern of the region from plants with high water requirement to plants with low water requirement or dry land has been added to the official cultivation pattern of East Azerbaijan province and is being promoted among the farmers of the region.
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Similar to The Effect of Different Organic and Chemical Fertilizers and their Combined Application on the Quantity and Quality Characteristics and Yield of Tomato
The most important problem that threatens food security of any country and the world is the lack of adequate water resources, so one of the ways to deal with this crisis is to use plants with low water requirements and high water use efficiency. Among the plants, we can name Quinoa, which is one of the plants that has been less studied and exploited in Iran. Since the planting date has the greatest impact on the physiological characteristics of the crop compared to other cropping treatments, so choosing the appropriate planting date can also create the greatest correlation between plant growth trends and climatic conditions. Undoubtedly, the use of biological fertilizers, in addition to the positive effects it has on all soil properties, is also economically, environmentally and socially fruitful and can be a suitable and desirable alternative to chemical fertilizers. Therefore, the aim of this study was to determine the response to deficit irrigation, planting date and application of different biofertilizers in quinoa.
Introduction
Nowadays, the cultivation of plants adapted to adverse conditions, such as drought and salinity, in the country has been considered. Meanwhile, Kochia scoparia, one of the forgotten plants, due to its classification in the group of halophytes, has specific characteristics suitable for cultivation in low-water and saline areas (Salehi, Kafi, & Kiani, 2012). This plant is known as an important annual forage crop, and its grains also have high nutritional value and oil, which can be considered for future industrial applications (Salehi et al., 2012). Studies on the salinity tolerance of the Kochia plant have shown that it is suitable for cultivation in saline areas, and in terms of quantity and quality, can compete with conventional forage plants. The use of natural organic materials, such as humic acid, has received more attention. These materials, as part of soil organic matter, are influenced by physical, chemical, and microbiological changes in biological molecules (Sabzevari & Khazaei, 2009; Dong, Córdova-Kreylos, Yang, Yuan, & Scow, 2009). Additionally, nitrogen is the most important element needed for plant growth and development. It is also a key component in many biological compounds, including proteins, nucleic acids, some hormones, and chlorophyll. Nitrogen plays an essential role in photosynthetic processes and the final function of plants (Kaur, Gupta, & Kaur, 2002; Taiz, Zeiger, Møller, & Murphy, 2015). As a result of this research, a combination of nitrogen and humic acid can be used as nutritional resources in salt stress conditions.
Materials and Methods
This experiment was conducted in the form of split plots based on the randomized complete block design with three replications in the Saline Research Farm of Ferdowsi University of Mashhad in the 2015 growth season. The main plot included drought stress with a four-week interruption of irrigation at three levels of control (irrigation until the end of the growing season), after establishment (50 days after planting), the beginning of flowering (71 days after planting) and late flowering (82 days after planting) The subplot was included nitrogen application at three levels of zero, 100 and 200 kg.ha-1 from urea fertilizer source. The optimum level of humic acid (2 per thousand) was done as seed at the time of planting for all treatments.
Results and Discussion
The results showed that the drought stress during vegetative and reproductive growth stages had a negative effect on the Kochia plant. However, its effect in the early stages of vegetative growth (after establishment) was greater than the stress at the end of the season (late flowering). Drought stress has a negative effect on Kochia grain yield by reducing the concentration of chlorophyll a, altering the chlorophyll a to b ratio, decreasing carotenoid concentration, and affecting relative leaf water content. However, seed treatments of humic acid and its combination with 100 kg.ha-1 nitrogen level by increasing th
In recent decades, the need for increased food production has resulted in the expansion of intensified agriculture practices characterized by high consumption of inputs, thereby reducing agricultural sustainability. The agricultural sector's contribution to the world's energy consumption, ecological footprint, and greenhouse gas emissions has grown substantially. Emissions of greenhouse gases have negative ecological effects, including climate change, global warming, and diminished sustainable development. In this sector, energy analysis and greenhouse gas emissions in ecosystems are the most common methods for assessing sustainability. This study was conducted to evaluate the sustainability of canola agroecosystems by analyzing energy consumption, carbon footprint, and greenhouse gas emissions.
Since the development of crop cultivation and their yield depend on irrigation and since drought is one of the features of our country, one of the solutions to deal with these problems is the implementation of applied research in the field of stress-resistant plants cultivation such as quinoa. Also, considering the important role of potassium and zinc elements in the plant, providing a sufficient amount of these elements under drought stress can be effective in increasing the plant's resistance to this type of stress. Considering the genetic differences of plants and their different reactions in the face of environmental stress such as drought stress, and different fertilization of genotypes, it seems necessary to carry out this research to investigate the application of potassium and zinc chelates on the morpho-physiological and yield indicators of three quinoa genotypes under drought stress conditions in Razavi Khorasan climate.
The quantity and quality of forage plants are beneficial and useful due to their role in animal husbandry, reproduction and other livestock products. Due to the limitation of water resources, water-deficit as a significant biotic stress is the most severe threat to world food security and is responsible for many yield losses. Plants constantly modify their physiological processes in response to various biotic and abiotic stress to regulate the balance between plant growth and defense response. Many researchers have documented that plant nutrients are involved in biological processes of plants. It has been stated that the use of silicon by increasing the ability to absorb water can be useful to improve drought tolerance of sorghum, sorghum can with the help of silicon extract more water from dry soil and maintain more stomatal conductance.
The excessive use of chemical fertilizers is a leading cause of environmental pollution in the agriculture sector. Therefore, optimizing fertilizer application is a crucial approach to boost production while minimizing environmental harm. On the other hand, application of chemical fertilizers along with manure can be considered as the proper management system that led to reduce the amount of chemical fertilizers and adverse effects on environment and also improve nutrition for plants. Response-surface methodology is a powerful tool to optimize production resources which decreases cost and time of the experiments by reducing number of them. Therefore, the aim of the study was optimization of chemical fertilizers of nitrogen and phosphorus along with manure application in fodder maize production.
The excessive use of chemical fertilizers is a leading cause of environmental pollution in the agriculture sector. Therefore, optimizing fertilizer application is a crucial approach to boost production while minimizing environmental harm. On the other hand, application of chemical fertilizers along with manure can be considered as the proper management system that led to reduce the amount of chemical fertilizers and adverse effects on environment and also improve nutrition for plants. Response-surface methodology is a powerful tool to optimize production resources which decreases cost and time of the experiments by reducing number of them. Therefore, the aim of the study was optimization of chemical fertilizers of nitrogen and phosphorus along with manure application in fodder maize production.
Seed pretreatment is one of the simple techniques that can increase seed vigor and seedling establishment, and thus plant yield. Seed pretreatment can be done with water (hydropriming), inorganic salts such as potassium nitrate (halopriming), and growth regulators such as salicylic acid (hormone priming) and ascorbic acid (vitamin priming). Another effective factor in producing strong seeds is proper nutrition of the mother plants. Proper nutrition of the maternal plant in the form of foliar sprays with essential elements leads to the production of high-quality seeds, which affects germination and yield. Considering the positive role of seed pretreatment in improving germination rate and seedling establishment, and increasing seed yield of various plants as a result of foliar application of growth regulators and inorganic salts, this experiment was conducted to study the effect of seed pretreatment and foliar spraying with salicylic acid, ascorbic acid and potassium nitrate on improving physiological and biochemical characteristics, yield and yield components of borage.
Introduction
In conventional formulations such as emulsifiable concentrates (EC), wettable powders, soluble liquids, etc., complete availability of the active agent is usually considered immediate or rapid following usage. Application rates of these formulations of pesticides are greater than the minimum threshold concentration to counter losses from sorption, volatilization, photodecomposition, microbial and chemical degradation, and leaching. Controlled-release technology for pesticides could reduce environmental damage and increase efficiency by enhancement of delivery to the site of action. This survey was conducted to determine the possibility of EPTC and trifluralin efficiency improvement by using microencapsulated formulation (MC) that were first synthesized in Iran.
Materials and Methods
Two separated greenhouse experiments were conducted in Tirtash Research and Education Center (Mazandaran–Iran) in 2014. The experiments were carried out in a factorial arrangement based on a randomized complete block design with three replications. The Microencapsulated formulation of EPTC and trifluralin herbicides were compared with emulsifiable concentrate formulation (Eradicane 82% and Treflan 48%) in 0 (control), 25, 50, 75 and 100 percent of active ingredient (a.i.) (4.92 and 1.2 kg a.i./ha, recommended doses for EPTC and trifluralin, respectively). For this purpose, the soil of pots were infested with the seed of Green foxtail (Setaria viridis) and Redroot pigweed (Amaranthus retroflaxus). The responses of weeds to treatments, specifically seedling number, were analyzed using ANOVA tests, non-linear regression, and fitting to three parameters of Weibull and log-logistic equations. This analysis was based on Akaike's Information Criterion, Residual Standard Error, and Lack-of-Fit Test indices in the R3.4.1 program. The effective dose were determined for 10, 50 and 90 percent of weed control (ED10, ED50 and ED90, respectively). Relative potency index (R) of formulation types were determined by divided ED50 of EC into MC formulations.
Results and Discussion
According to the results of the experiments, the formulation type had a significant effect on the weed numbers. The MC formulations of EPTC increased Green foxtail and Redroot pigweed control efficiencies. The ED10, ED50 and ED90 decreased from 0.72, 2.94 and 7.18 kg a.i.ha-1 in the EC to 0.41, 1.87 and 4.89 kg a.i.ha-1 in the MC formulation for Green foxtail and 1.08, 3.29 and 10.02 kg a.i.ha-1 in the EC to 0.57, 2.36 and 9.67 kg a.i.ha-1 in the MC formulation for Redroot pigweed. The R index of EPTC in Green foxtail and Redroot pigweed control were 1.57 and 1.39, respectively. Weed control increased as trifluralin dosage increased in both of the formulation types, although in higher doses of the MC, weed control efficiency increased more than the EC formulation. So the efficiency of the MC formulations depended on application dosages. The ED10, ED50 and ED90 of Green foxtail were 0.14, 0.55 an
Fennel is a cross-pollinating plant and one of the most important medicinal plants of the Apiaceae family, whose essential oil is widely used in various pharmaceutical, food, and cosmetic industries. Fennel originated from the Mediterranean region and is a biennial or perennial species. Fennel essential oil has been demonstrated to have antioxidant, anti-cancer, antibacterial, antifungal, and analgesic effects. Improving yield is one of the important goals of breeding, and the use of heterosis as one of the powerful tools to improve yield has always been of interest to breeders. This study was conducted to evaluate seed yield and yield components of three synthetic cultivars of fennel and compere with eight parental populations.
Grasspea (Lathyrus sativus L.) is one of the most important forage crops in the world. It contains 12 to 20% protein. Silicon (Si) existing in the Earth’s crust is classified as the most abundant element after oxygen. Although silicon is not considered an essential element for plant growth, but a number of studies have reported that it as an important factor in plants that plays an important role in the resistance mechanisms of plants against environmental stress. Also, it plays a crucial physiological role in photosynthetic rate and chlorophyll content. One of the most effective factors in increasing the Grasspea biomass is seed inoculation with plant growth-promoting rhizobacteria (PGPR). Some of the benefits provided by PGPR are the ability to produce gibberellic acid, cytokinins and ethylene, N2 fixation, solubilization of mineral phosphates and other nutrients. Numerous studies have shown a substantial increase in dry matter accumulation via inoculation with PGPR. Some researchers reported that seed inoculation with PGPR enhanced relative water content and photochemical efficiency of PSII lathyrus under water limitations. Therefore, the aim of this study was to evaluate the effects of nano silicon and seed inoculation with plant growth-promoting rhizobacteria on biomass, nodulation and some physiological traits of Grasspea.
Maize (Zea mays L.) is one of the most important cereals after wheat and rice in the tropical and temperate regions of the world. Also, its mean production is 8 ton ha-1. Moreover, the total area of under cultivation is 132572 hectares in Iran. Crop simulation models can play an important role in improving agricultural production systems in many developing countries. Crop models can simulate plant growth processes and grain yield instead of conducting several years of field experiments. On the other hands, crop simulation models should be calibrated and evaluated with independent data sets under different climatic conditions. Therefore, the purpose of this research was evaluation of the APSIM model for simulation of growth, development and yield of maize hybrids in Kerman province under different amounts of nitrogen.
Salinity stands as a significant environmental stressor that profoundly curtails the growth and yield of crop plants. This adversity also extends to the impairment of pigments and plastids, leading to diminished chlorophyll indices, rates, and grain-filling durations. To counteract the deleterious impact of such stressors on plant growth, a spectrum of strategies has been devised. Prominent among these strategies are plant growth-promoting rhizobacteria, exemplified by azospirillum, and the utilization of nanoparticles like zinc and silicon. These factors play a pivotal role in elevating yield outcomes. Zinc's pivotal involvement spans protein metabolism, photosynthetic activities, and diverse physiological traits within plants. Particularly noteworthy is its contribution to rectifying zinc deficiency, a particularly critical concern in plants cultivated in high-pH soils. Notably, recent research has illuminated the potential of applying minute quantities of micronutrients, notably zinc via foliar spraying, in bolstering plant resilience against salt stress. Likewise, silicon emerges as a supplemental micronutrient that imparts heightened resistance to environmental stresses, fostering increased resilience within biological systems. Therefore, this study aimed to evaluate the effects of application of plant growth-promoting rhizobacteria and nanoparticles (zinc and silicon) on the yield, photosynthetic pigments, and filling components of triticale grain under salt stress.
The increasing demand for medicinal plants in traditional medicine as well as the pharmaceutical industry has created the need for some plants to be grown commercially, but the lack of soil moisture poses a serious threat to their production. Planting method can affect the emergence and growth rate of crop and lead to decrease water consumption and increase irrigation water efficiency as yield increases. Roselle (Hibiscus sabdariffa L.) is one of the drought tolerant plants. Saving water consumption by cultivating drought tolerant plants has been proposed as a strategy to combat drought. It should be noted, however, that irrigation without proper planning can reduce the growth and production of crops. In this regard, determining time of deficit irrigation with minimum damage is an appropriate solution that achieves optimum yield while saving water consumption. The aim of this study was to investigate the effect of different irrigation regimes and planting method on some physiological traits, yield and water use efficiency of Roselle plant.
Introduction
Celiac disease is one of the most common digestive disorder. Chicken nugget is one of the most popular instant and ready-to-eat foods, and wheat flour is one of its main coating ingredients, which contains approximately 60% gluten. Quinoa is a gluten-free grain, as a good source of dietary fiber, has various applications in the meat products processing system as a stabilizer, fat substitute, structural components, etc. The addition of hydrocolloids also helps to improve the rheological properties of gluten-free products. The purpose of this research was to evaluate the effect of quinoa-corn mixed flour in the preparation of nugget batter as a gluten-free combination as an alternative to wheat flour, and also to investigate the effect of adding HPMC hydrocolloid on the final product characteristics. In this research, a rotatable central composite design was used to investigate the effect of two independent variables including different proportions of quinoa-corn flour (0-100, 50-50, 100-0%) and different levels of hydrocolloid (0.5-1-1.5%) on the quality characteristics of nugget. With the increase of quinoa replacement level, moisture content (0.60), batter pick up (138) and redness level 5.5 (a*) increased, and oil content (11), hardness (7.5), brightness level 41(L*), yellowness level 20(b*) decreased. The increase of HPMC also caused an increase in moisture content (0.59), brightness level (L*) of 0.39, batter pick up (137) and decrease in oil content (10) and hardness (7). Optimum conditions for the production of gluten-free nugget were determined by considering the optimal amounts for the production of high quality and healthy products, contained 90% quinoa and HPMC at a level of about 1%.
Materials and Methods
Corn flour was purchased from the pilot of Ferdowsi University of Mashhad. The de-saponified quinoa was prepared from Kashmir and then ground. In order to make the grains more uniform, both flours were sieved using a 30 mesh. Hydrocolloid hydroxypropyl methylcellulose was also prepared from Kian Shimi Mashhad. Oyla frying oil was used for frying the samples.
The chicken nugget formulation was a mixture of 86% minced chicken, 10% onion, 1.5% garlic powder, 1% salt and 1.5% pepper. After complete mixing, these materials were poured into a freezer bag until a homogeneous and uniform mixture was obtained, and they were flatted until they reached the desired thickness (1 cm). Plastics containing chicken paste were stored in the freezer for 2 hours to facilitate cutting. Then molding was done with a circular mold with a diameter of 4 cm (Dehghan Nasiri et al., 2012).The batter formulation consisted of flour, water, baking powder, salt and hydrocolloids. In order to investigate the effect of quinoa and corn flours, and hydrocolloids, these substances were added to nugget water paste in different percentages (quinoa-corn ratio: 0-100, 50-50, 0-100 and hydrocolloids at the level of 1-1 / 5 -0.5%) and then mixed with water by mix
Drought stress and consequent lack of available water for plants is one of the main causes of accumulation of reactive oxygen species (ROS) in various organs of plants, which is effective in reducing the yield of cereals such as wheat. The antioxidant system, which contains various enzymes and genes, is responsible for removing and detoxifying plants from ROS. Unfortunately, genes responding to drought stress and their enzymatic activities associated with spike and flag leaf of wheat have received less attention. Therefore, in the present study, photosynthetic parameters, key enzymes of the antioxidant system, and expression analysis of some genes involved in this system under field capacity (FC) and drought stress (DS) conditions in spike and flag leaves of wheat were investigated.
Water is now the main limiting factor for crop production in arid and semi-arid regions. Water-cut or irrigation interruption has been suggested as one of the main strategies agro-technique to get the most benefit from limited water resource available. In this regard, plant growth stage, time of stress induction and the genotype are the main key factors to determine the degree of success. Canola is one of the most important oil crop. It can survive some degree of water stress while there is a need for research to find the most appropriate genotypes for plantations in water-limited areas.
The effect of salinity stress on the quantity and quality of crop production highlights the importance of managing and reducing the damage caused by this stress factor in agriculture. Increasing soil salinity and decreasing fertility of arable lands is one of the major problems in saline areas. Cultivation of salt-tolerant crops which can increase soil fertility could be effective in the sustainable production of these lands. Studying photosynthesis and its related factors could provide appropriate physiological views in understanding plant behavior against salinity stress. The present study was conducted to assess the salinity tolerance of chickpea genotypes for cultivation in saline areas.
Similar to The Effect of Different Organic and Chemical Fertilizers and their Combined Application on the Quantity and Quality Characteristics and Yield of Tomato (20)
The agricultural systems are facing numerous challenges in maintaining and providing food security. Achieving this goal, considering the growing global population is possible through the application of sustainable agricultural principles to increase crop yield and reduce environmental costs. The widespread use of chemical inputs, particularly nitrogen fertilizers, by farmers globally to enhance yields has resulted in numerous environmental hazards, including soil and groundwater pollution. Intercropping systems emerge as a viable strategy to augment yield, curtail reliance on chemical fertilizers, and safeguard the environment. Enhancing the yield and quality of forage has become a paramount concern in the agricultural sector in recent times. Various approaches exist to achieve this objective, among which intercropping cereals and legumes stands out as a promising solution. One of the most sustainable farming methods in saline and arid lands is drying livestock products using salt-tolerant plants, which can also be beneficial for farmers.
The great importance of identifying, studying, evaluating, and protecting native ecotypes of medicinal plants as human heritage, collecting agricultural medicinal plants and ecological evaluation of their native ecotypes, and introducing their compatible ecotypes is a necessity for farmers. Considering the few studies in the field of the agricultural role of non-native plants such as Dragon's head in Iran to meet the country's nutritional needs, the present research aims to study and evaluate the performance of local medicinal and multi-purpose plant stands of urban sycamore and also to obtain new scientific materials in the case of these local masses has been done in the research farm of University of Tabriz Faculty of Agriculture. It is necessary to explain that in recent years, due to the crisis of water shortage and drought, this plant is in line with changing the cultivation pattern of the region from plants with high water requirement to plants with low water requirement or dry land has been added to the official cultivation pattern of East Azerbaijan province and is being promoted among the farmers of the region.
Among abiotic stress factors, drought is one of the most detrimental factors in arid and semiarid regions, causing a significant decrease in plant growth and yield in most species, including crops. Under drought conditions, morphological, physiological, and biochemical characteristics are negatively affected. The detrimental impact of water scarcity may be mitigated through the utilization of plant growth-promoting rhizobacteria (PGPR) and nanoparticles (NPs) like nano iron-silicon oxide. PGPR species such as Azospirillum and Pseudomonas have been found to enhance hormonal balance, maintain nutrient levels, improve plant growth characteristics, and ultimately boost yield. Additionally, the application of NPs aids in enhancing plant growth under stressful conditions by facilitating water retention, fortifying membrane integrity, and enhancing nutrient and water uptake. Consequently, it is plausible that the combined application of PGPR and NPs could enhance triticale yield even in conditions of water limitation.
The economic importance of quinoa is not only due to the possibility of using the seeds as a food product characterized by a similar composition and use as consumer cereals but the species can also be managed as a leafy vegetable with high nutritional value and similar uses, such as, for example, spinach. Drought is another environmental stressor for plants subjected to severe water stress, especially in semi-arid and arid environments. Water scarcity poses a considerable challenge to crop production, leading to a notable reduction in crop yield. Quinoa, however, boasts low water requirements and demonstrates resilience in drought conditions. Even during dry periods, quinoa can effectively sustain leaf area and regulate photosynthetic activity. This resilience is facilitated by structural characteristics such as small, thin-walled cells, tissue flexibility, low osmotic potential, and controlled leaf area reduction through dehiscence. Other quinoa features for sustaining turgor pressure through osmotic adjustment during drought stress include inorganic ion buildup (e.g., Ca, K, and Na) and improved organic element synthesis (carotenoids and proline). Quinoa genotypes have several drought-resistance mechanisms, enabling this crop to grow and develop under severe drought conditions.
One of the important challenges in the agricultural sector is the low use efficiency of chemical fertilizers, especially nitrogen fertilizers, as well as the competition of weeds with crops. In this regard, it is important to use management solutions to reduce the use of chemical inputs. To increase the quality level of food used by humans while reducing environmental pollution. One of the management solutions is the use of controlled-release fertilizers. Considering the desire to increase the quantity and quality of the coriander plant and also to identify the best-studied genotype, research was conducted in this field to investigate the effect of different sources of nitrogen fertilizer and the competition of weeds in the region on the agricultural and medicinal properties of different genotypes of coriander.
Quinoa (Chenopodium quinoa L.) is a dicotyledonous, allotetraploid, three-carbon, annual, optional salt-loving plant and is native to South America and the Andean highlands. The growth period of the plant varies between 70 and 240 days depending on the cultivated area. The main product of this plant is the seed, which has a high nutritional value in terms of protein, amino acid balance, unsaturated fat, vitamins, and minerals. Like other plants, quinoa faces various environmental stresses during its growth period, and its growth and yield are a function of environmental factors and their mutual effects. The occurrence of high temperatures during the sensitive stages of plant growth, such as flowering and seed formation, may cause a significant decrease in quinoa yield, and high temperature has been cited as one of the most important challenges for the cultivation and expansion of quinoa in the world. Salicylic acid acts as a signal molecule and plays an important role in regulating growth and development processes in plants under environmental stress. Salicylic acid increases the content of relative humidity, accumulation of dry matter, and the amount of chlorophyll.
Barley is the fourth most common cereal crop in the world after wheat, maize, and rice, which is used for animal and human feed and malt production. This plant stands out among crops due to its unexpectedly wide range of adaptation and distribution compared to other cereals, earning it recognition as a model species. Determining the variation in the morphological and physiological traits of roots and shoots in the collection of barley genotypes can provide the basis for breeding new cultivars with suitable traits for better adaptation to specific environments. So in this study, some morphophysiological characteristics of roots and shoots of commercial barley cultivars were studied to identify cultivars with a higher root-to-shoot ratio as donor parents for breeding projects.
Introduction
Prolonged droughts and lack of water resources, followed by the salinity of water and soil resources, have faced many limitations in the production of some conventional agricultural and garden plants, especially in arid and semi-arid regions of the country. Therefore, the introduction of new plants with high yield potential, which have suitable growth in saline soils, the threshold of their seed yield reduction is high, and the production product is of high quality has been considered in Iran. Quinoa with the scientific name Chenopodium quinoa Willd. It is an annual plant originating from Latin America, which, despite its high nutritional value, tolerates a wide range of abiotic stresses and can grow in marginal lands. For this reason, this experiment was conducted to investigate the performance of quinoa plant genotypes against different levels of salinity in the research field of the Gorgan Agricultural Meteorological Research Department.
Materials and Methods
Cultivation of seeds of nine genotypes Titicaca (control number), Giza1, RedCarina, Q18, Q21, Q22, Q26, Q29, and Q31 obtained from Karaj Seedling and Seed Breeding Research Institute in a factorial experiment based on a complete random block design. Plastic pots were made with a bed of sand and clay in a ratio of two to one on March 5, 2019. The application of NaCl salt solution treatments at the levels of zero, 10, 20, and 30 decisiemens/m started after the establishment of the plant and reached the six-leaf stage and lasted for 45 days. After salinity treatment, morphological traits including plant height, stem diameter, number of sub-branches, inflorescence length, inflorescence width, biomass, 1000 seed weight, and seed weight per plant were measured.
Introduction
Sunflower, one of the primary oilseed crops worldwide, is cultivated extensively due to its suitability for agricultural needs, high oil yield, and nutritional and medicinal value. However, drought remains the most critical limiting factor affecting sunflower productivity. In arid and semi-arid regions, the intensity of drought stress is predicted to increase in the future. Unfortunately, severe drought stress leads to significant reductions in both seed and oil production. While sunflower is moderately drought-tolerant, understanding the physiological and agronomic aspects of drought stress is crucial for sustainable management. Given that water, scarcity poses a significant threat to crop productivity and environmental resources are diminishing, effective irrigation management under water scarcity is becoming increasingly important.
Materials and Methods
In order to study the effects of deficit irrigation on grain yield and physiological traits of six sunflower cultivars, a field experiment was carried out in a split-plot arrangement based on randomized complete block design with three replications in 2019-2020 growing season. The experimental site was located in the research farm of the Safiabad Agricultural and Natural Resources Research and Education Center. Main plots consisted of three irrigation regimes including; control, moderate, and severe deficit irrigation (50, 70, and 90% of available moisture, respectively), and sub plots consisted of six sunflower cultivars including; Oscar, Felix, Shakira, Savana, Labad and Monaliza.
Deficit irrigation offers a solution for optimizing crop production under water stress conditions, albeit with an initial reduction in yield per unit area. Employing deficit irrigation aids in farm management in scenarios where land availability isn’t constrained, enabling the determination of optimal cultivation patterns while conserving water consumption. However, deficit irrigation may influence plant growth and development by inducing drought stress. Due to several capabilities, quinoa shows resistance to solar radiation, temperature, water availability, and atmospheric CO2 concentration, which makes it possible to cultivate it in different agricultural areas. Quinoa also has a great capacity for cultivation in dry and low-water soils. Although growth analysis sometimes provides valuable clues, it does not provide any physicochemical information related to the environmental reactions of plants; in other words, the main benefit of many quantities involved in growth analysis is to provide an accurate estimate of the ability and efficiency of the plant in the community at certain time intervals. In general, growth analysis evaluates the system based on the results of physiological manifestations. The purpose of this research was to evaluate the physiological growth analyses of three quinoa cultivars under different moisture levels in summer and spring planting dates in the South Khorasan region.
Agriculture is a cornerstone of many developing economies, providing food, income, and employment for millions of people. It is also projected to play a vital role in feeding a global population of 9.1 billion people by 2050. However, there are growing concerns about the environmental impact of agriculture, particularly in arid and semi-arid regions like Iran. Managing water and fertilizer usage in agriculture is crucial to ensuring food security and sustainability. However, conducting field experiments to assess the interaction of all factors involved is expensive and time-consuming. This research focuses on optimizing maize production in Kerman province, a region where maize is a major crop. The research is motivated by the need to improve resource management in Iran, where water and fertilizer resources are limited. The APSIM model is used to determine the best management scenario for maize production in Kerman province. APSIM is a crop growth simulation model that can be used to predict the impact of different management practices on crop yield, water use efficiency, and nutrient use efficiency. The use of APSIM in this research provides a cost-effective and time-efficient alternative to conducting extensive field experiments. The results of this research will contribute to the development of sustainable and efficient agricultural practices in Kerman province and similar regions. These regions are characterized by resource constraints, such as limited water and fertilizer availability. The research aimed to simulate the effect of management parameters (planting date and irrigation) on Crop yield and subsequently achieve the optimal management scenario.
Chickpea (Cicer arietinum L.) is one of the most important crops in the human food basket worldwide. It is a highly nutritious pulse crop with low digestible carbohydrates, protein, essential fats, fiber, and a range of minerals and vitamins. As the human population grows, the demand for this protein source increases and various approaches to its sustainable products are being developed. Autumn cultivation of chickpea in cold regions requires the introduction of cultivars tolerant to freezing stress. The ability of plants to overwinter depends on the biochemical and physiological responses induced by their cold acclimation duration. Cold acclimation mechanisms in the plant are a fundamental reason for plant tolerance increase in autumn cultivation. Hence, investigating the mentioned traits can help identify cold-tolerant genotypes. Identifying attributes that provide a suitable description of the diversity between genotypes is critical through canonical correlation analysis, cluster analysis, and determining the genetic distance.
Crop cultivars are the most important factor in crop optimum quantity and quality products achievement and cotton is one of the most industrial crops. Objectives of new cotton cultivars introduction are yield increase, earliness, and resistance to biotic and abiotic stresses. Despite the improvement and introduction of numerous new cotton cultivars in Iran in recent years, new foreign cotton cultivars have also been registered, introduced, and commercialized for the first time in Iran. Therefore, the cultivation of new foreign cotton cultivars that show early maturity, high-yielding, and have good fiber quality is included in projects of the Ministry of Jihad of Agriculture for cotton cultivation development. This research was carried out to evaluate and compare the seed cotton yield and its components and some fiber qualitative characteristics of new cotton with thought VCU trial in South Khorasaد province in Birjand Mohammadieh agriculture research station to introduce and commercialize these cultivars.
Global warming directly affects agricultural production and food security (Ainsworth & Ort, 2010). Temperature controls the rate of plant metabolic processes that ultimately affect biomass production and grain yield (Hay & Walker, 1981). Although farmers are not able to control the climatic conditions, management and changes in factors such as irrigation, soil, crop varieties, activities, and technologies used in the cultivation of crops can reduce the harmful effects of climate change (Moradi et al., 2014). One of the reliable approaches to studying the effects of climate change on agricultural production is using crop growth models. The present study was conducted to simulate the effects of climate change on phonological stages and yield of maize and to investigate the possibility of mitigating the negative effects of climate change on maize by changing the sowing date and selecting suitable cultivars as management strategies for adaptation to climate change in Kermanshah region.
Wheat (Triticum aestivum L.) is one of the most important crops in the world as well as in Iran. It has experienced many improvements in terms of yield and quality traits during recent decades. Wheat, like energy, is known as a strategic commodity and is one of the important indicators of agriculture. This plant has the highest area under cultivation and production among other cereals in the world. Planting date is an important factor in crop production because meteorological parameters vary with changes in planting date. Delay in planting is one of the problems that is common in almost all wheat growing areas of Iran and is one of the main causes of reduced yields of wheat cultivars. Yield reduction rate varies depending on the delay in planting and cultivars, and the results of some experiments indicate that this amount sometimes reaches more than 35% of potential grain yield. Phenology and growth rate due to their effect on duration and the occurrence of different stages of development and the environmental conditions prevailing in each of these stages, are the key point of adaptation to various environmental conditions such as delayed planting date. This experiment was designed to identify the changes in yield and yield components and phenological stages of new bread wheat cultivars with different growth habits and to investigate the possibility of introducing cultivars compatible with delayed planting date in the region.
Sugar beet (Beta vulgaris L.) is the second most important sugar crop after sugarcane, which annually produces about 40% of total sugar production worldwide and is adapted to different climatic conditions (El-Hag et al., 2015). Due to global warming, autumn cultivation of sugar beet is predicted to become more priority in the future, but autumn cultivation is in danger of bolting and flowering in many areas. Excessive bolting reduces sugar content, root yield, and purity of raw syrup. In general, both early sowing and delayed sowing reduce root yield, sugar, and leaf area index and increase the percentage of impurities. Therefore, this experiment was designed and implemented with the aim of feasibility study of autumn cultivation of sugar beet and determination of the best planting date in North, Razavi, and South Khorasan provinces for three new varieties resistant to sugar beet.
Investigating the Possibility of Autumn-Sown and Determining the Most Suitabl...
The Effect of Different Organic and Chemical Fertilizers and their Combined Application on the Quantity and Quality Characteristics and Yield of Tomato
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yield was obtained in the combined treatment of NPK chemical fertilizer + animal manure. (32.8 ton.ha-1
). The
results showed that using organic fertilizers individually and combinatorial compared to NPK chemical
fertilizers had more Brix index, vitamin C, and lycopene. The highest amount of Brix index in first and second
cutting (6.55 and 7.13, respectively), vitamin C (12.9 and 11.4 mg.100 g sample-1
, respectively), and lycopene
(2.48 and 2.25 mg.100 g sample-1
, respectively) in the combined treatment of animal manure + vermicompost.
Since the elements in the chemical fertilizer are released faster than the elements of other fertilizers and are
available to the plant, therefore, by increasing the initial growth of the plant and as a result of improving its
flowering potential, the total yield increased, in particular in the first cutting, where the superior treatment was
the NPK chemical fertilizer. Further, due to the gradual release of organic fertilizer elements, the combined
treatment of chemical and organic fertilizers increased the yield. On the other hand, organic matter plays an
important role in soil fertility and performance. The rare elements in organic matter can meet the needs of soil
microorganisms, enhance microbial activities, affect soil-microorganism interactions, and indirectly affect crop
quality.
Conclusion
The use of organic fertilizer, when combined with chemical fertilizer, can enhance both the qualitative and
quantitative characteristics of tomatoes. By substituting a portion of chemical fertilizer with organic fertilizer,
not only can yield be improved, but it's also possible to reduce the consumption of costly chemical fertilizers.
This approach aligns with sustainable agricultural goals by optimizing the use of organic fertilizers.
Keywords: Biochar, Brix index, Tomatoes, Vermicompost, Vitamin C
13. ،همکاران و فر آریان
آن ترکیبی کاربرد و شیمیایی و آلی کودهای انواع تأثیر
ویژگی بر ها
های
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215
بس
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خصوص از
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گوجاه کمی و کیفی
فرنگای
بوشا بهباود را
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جا با
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گز
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بوش نمودن
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ش کود از
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ا
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کود با
آلی
عاالوه
م عملکرد بهبود بر
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توان
شا کود مصرف کاهش به
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باه
عناوان
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نهاده از
های
پرهز
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همچن و نمود
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به اساتفاده با
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کود
آلی
راستا در
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کشاورز اهداف به
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.برداشت گام
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