How soil microbes help plants resist disease - IndogulfIsabella Brown
soil microbes lend the entire plant a special kind of disease protection. When soil microbes are present, plants undergo what is called “induced systemic resistance,” an immunity boost that protects the plant from a broad range of pathogens. For more details visit https://www.indogulfbioag.com/soil-fertilizers
This document discusses the use of biocontrol agents, specifically Trichoderma species, for managing plant pathogens and diseases. Some key points:
- Pathogens threaten global crop production and excessive fungicide use pollutes the environment and leads to resistance, so alternative biological control methods are needed.
- Trichoderma is an effective biocontrol agent that controls pathogens through mycoparasitism, antibiosis, competition, and other mechanisms without environmental pollution.
- Mass production of Trichoderma uses liquid fermentation or solid substrates like wheat bran to grow the fungus, which is then mixed with carriers like talc or vermiculite before application to seeds, soil, or plants.
Mohd Bilal Khan, a final year B.sc (Hons) student from the Department of Botany at A.M.U, presented information on fungicides. The document discussed the origin and history of fungicides, their mechanisms and modes of action, benefits which include protecting plants and improving yields, and risks such as phytotoxicity and environmental impacts. It concluded that fungicides should be correctly diagnosed and applied judiciously to efficiently protect plants while minimizing health and environmental risks.
What is a Root-knot Nematode? Deep Understanding | The Lifesciences MagazineThe Lifesciences Magazine
Root-knot nematodes are roundworms belonging to the family Heteroderidae. Among the various nematode species, those in the genus Meloidogyne are notorious for their ability to form characteristic galls or knots on the roots of host plants.
Trichoderma is a filamentous fungus that is widely distributed in the soil, plant material, decaying vegetation, and wood. It belongs to the family Hypocreaceae. They have high potential for colonizing their habitats and have various applications in food industry, agriculture, as a biocontrol agent with mechanism involving antibiosis, competition, mycoparasitism, promotion of plant growth, solubilization and sequestration of inorganic plant nutrients, inducing resistance and inactivating pathogen’s enzymes and also as a source of transgene. The major driving force for investigation of biocontrol with Trichoderma is sustainability. As a plant symbiont and effective mycoparasites, numerous species of this genus have the potential to become biofungicides. the extensive studies on Trichoderma, including its diverse physiological traits available, is still progressing and making these fungi versatile model organisms for research on both industrial fermentations as well as natural phenomena. Jasmine Chughasrani | Abhishikta Dasgupta | Rutuja Das "Applications of Trichoderma- A Review" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-2 , February 2021, URL: https://www.ijtsrd.com/papers/ijtsrd38341.pdf Paper Url: https://www.ijtsrd.com/biological-science/botany/38341/applications-of-trichoderma-a-review/jasmine-chughasrani
This presentation is about Nematode management options for organic and precision farming. In this presentation care and management practices used for nematode control are explained, some of them are 1) Resistant crop variety 2) Crop rotation 3) Soil solarization 4) Biological control etc.
This document outlines a graduate term paper on the antagonistic activities of Trichoderma sp. in agricultural activities. It provides an introduction to Trichoderma and its importance as a biocontrol agent against plant pathogens. The document discusses the history, taxonomy, characteristics, mechanisms of action, and application methods of Trichoderma. It also summarizes results from studies demonstrating the antagonistic effects of different Trichoderma species and strains against various pathogens through competition, mycoparasitism, antibiosis, and other mechanisms. The conclusion emphasizes the growing importance of Trichoderma in managing plant pathogens and the need for further research to identify more effective strains.
How soil microbes help plants resist disease - IndogulfIsabella Brown
soil microbes lend the entire plant a special kind of disease protection. When soil microbes are present, plants undergo what is called “induced systemic resistance,” an immunity boost that protects the plant from a broad range of pathogens. For more details visit https://www.indogulfbioag.com/soil-fertilizers
This document discusses the use of biocontrol agents, specifically Trichoderma species, for managing plant pathogens and diseases. Some key points:
- Pathogens threaten global crop production and excessive fungicide use pollutes the environment and leads to resistance, so alternative biological control methods are needed.
- Trichoderma is an effective biocontrol agent that controls pathogens through mycoparasitism, antibiosis, competition, and other mechanisms without environmental pollution.
- Mass production of Trichoderma uses liquid fermentation or solid substrates like wheat bran to grow the fungus, which is then mixed with carriers like talc or vermiculite before application to seeds, soil, or plants.
Mohd Bilal Khan, a final year B.sc (Hons) student from the Department of Botany at A.M.U, presented information on fungicides. The document discussed the origin and history of fungicides, their mechanisms and modes of action, benefits which include protecting plants and improving yields, and risks such as phytotoxicity and environmental impacts. It concluded that fungicides should be correctly diagnosed and applied judiciously to efficiently protect plants while minimizing health and environmental risks.
What is a Root-knot Nematode? Deep Understanding | The Lifesciences MagazineThe Lifesciences Magazine
Root-knot nematodes are roundworms belonging to the family Heteroderidae. Among the various nematode species, those in the genus Meloidogyne are notorious for their ability to form characteristic galls or knots on the roots of host plants.
Trichoderma is a filamentous fungus that is widely distributed in the soil, plant material, decaying vegetation, and wood. It belongs to the family Hypocreaceae. They have high potential for colonizing their habitats and have various applications in food industry, agriculture, as a biocontrol agent with mechanism involving antibiosis, competition, mycoparasitism, promotion of plant growth, solubilization and sequestration of inorganic plant nutrients, inducing resistance and inactivating pathogen’s enzymes and also as a source of transgene. The major driving force for investigation of biocontrol with Trichoderma is sustainability. As a plant symbiont and effective mycoparasites, numerous species of this genus have the potential to become biofungicides. the extensive studies on Trichoderma, including its diverse physiological traits available, is still progressing and making these fungi versatile model organisms for research on both industrial fermentations as well as natural phenomena. Jasmine Chughasrani | Abhishikta Dasgupta | Rutuja Das "Applications of Trichoderma- A Review" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-2 , February 2021, URL: https://www.ijtsrd.com/papers/ijtsrd38341.pdf Paper Url: https://www.ijtsrd.com/biological-science/botany/38341/applications-of-trichoderma-a-review/jasmine-chughasrani
This presentation is about Nematode management options for organic and precision farming. In this presentation care and management practices used for nematode control are explained, some of them are 1) Resistant crop variety 2) Crop rotation 3) Soil solarization 4) Biological control etc.
This document outlines a graduate term paper on the antagonistic activities of Trichoderma sp. in agricultural activities. It provides an introduction to Trichoderma and its importance as a biocontrol agent against plant pathogens. The document discusses the history, taxonomy, characteristics, mechanisms of action, and application methods of Trichoderma. It also summarizes results from studies demonstrating the antagonistic effects of different Trichoderma species and strains against various pathogens through competition, mycoparasitism, antibiosis, and other mechanisms. The conclusion emphasizes the growing importance of Trichoderma in managing plant pathogens and the need for further research to identify more effective strains.
This document summarizes information about the genus Trichoderma, a type of fungus known for its ability to control plant pathogens and promote plant growth. Some key points:
- Trichoderma species are common soil fungi that can attack and kill other fungi through mycoparasitism, antibiotic production, and competition for resources. They have been widely used as biocontrol agents against phytopathogens.
- Over 100 Trichoderma species have been identified internationally. They are found in soils worldwide and can colonize plant materials and roots. Trichoderma was first described in the late 18th century and its potential as a biocontrol agent was recognized in the early 20th century.
-
This document summarizes information about the genus Trichoderma, a type of fungus known for its ability to control plant pathogens and promote plant growth. Some key points:
- Trichoderma species are common soil fungi that can attack and kill other fungi through mycoparasitism, antibiotic production, and competition for resources. They have been widely used as biocontrol agents against phytopathogens for over 70 years.
- Trichoderma has many advantages as a biocontrol agent, including high reproduction rates, ability to survive harsh conditions, and promotion of plant defenses. However, some species can also be plant pathogens in certain situations.
- Over 100 Trichoderma species have been identified
Breeding for insect pest stress in vegetable cropsMajid Rashid
This document discusses breeding for pest resistance in vegetable crops. It begins by introducing some key insect pests that damage vegetable crops and cause significant yield losses. It then covers the different mechanisms of insect resistance including nonpreference, antibiosis, tolerance and ecological resistance. The document discusses the genetics underlying insect resistance and describes different breeding methods used for developing resistant varieties like introduction, selection, hybridization and genetic engineering. It also covers techniques for screening vegetable crops for insect resistance in the field and glasshouse. Finally, the document lists some vegetable crop varieties that have been bred for resistance to important insect pests.
Breeding for pest stress in vegetablesMajid Rashid
1) The document discusses breeding for pest stress mechanisms and genetics of resistance in vegetable crops. It covers sources of resistance, breeding methods, and screening techniques.
2) The key mechanisms of insect resistance include nonpreference, antibiosis, tolerance, and ecological resistance. Resistance can be oligogenic, polygenic, or cytoplasmic. Sources of resistance include cultivated varieties, germplasm collections, related wild species, and unrelated organisms.
3) Breeding methods to develop resistant varieties include introduction, selection, hybridization, and genetic engineering. Screening is done in the field or glasshouse to identify resistant plants. Advantages of resistant varieties include inherent pest control without chemicals. Problems include resistance being pest specific and difficulties
Trichoderma is a biocontrol agent that can be used to control plant pathogens and diseases. It acts through mycoparasitism, antibiosis, competition, and induced resistance. Trichoderma species like T. harzianum and T. viride are effective biocontrol agents that can control diseases caused by fungi like Fusarium, Pythium, and Rhizoctonia. Trichoderma is mass produced using liquid or solid state fermentation and formulated products are available from various companies for seed treatment, soil application, and other uses to promote plant growth and manage diseases in agricultural crops.
Genetically modified organisms (GMOs) are organisms whose genetic material has been altered using genetic engineering techniques. This document focuses on transgenic bacteria, which are bacteria that have been genetically engineered to carry and mass produce a selected gene. GM bacteria are useful because they can quickly and easily produce large quantities of a selected gene, which can then be used to create medicines and help the environment. Some benefits of using GM bacteria include degrading oil spills, fixing nitrogen to increase crop production, and creating anti-freezing bacteria to protect plants.
This document summarizes a credit seminar given by Zahid Abass Wazir on ecological engineering as a new direction for agricultural pest management. The seminar discusses ecological engineering as a habitat manipulation technique that focuses on reducing mortality of natural enemies to provide resources like nectar and pollen. It presents the advisory committee for Wazir's PhD, then introduces ecological engineering and its advantages over chemical pesticides. Mechanisms of top-down and bottom-up control are described, as well as ways to enhance natural diversity and design pest-stable agroecosystems through practices like increasing species and genetic diversity. Case studies demonstrating habitat manipulation techniques are also summarized.
The document discusses the characteristics of desirable biocontrol agents. It provides examples of fungal, bacterial, and nematode biocontrol agents like Trichoderma spp, Pseudomonas fluorescens, and Pasteuria penetrans. It explains that an ideal biocontrol agent should be non-pathogenic, have a broad spectrum of activity, mass-produce easily and economically, and establish well in soil with high persistence.
Grade 9, U3-L10 pesticides and biomagnificationgruszecki1
This document discusses pesticides and their environmental impacts. It describes how monocultures create ideal conditions for pest populations to thrive. Pesticides are commonly used to control pests, but they can harm non-target species and accumulate in organisms through bioaccumulation and biomagnification. Long-term pesticide use can also lead to pest resistance. The document advocates for alternative pest control methods like those used in organic farming to reduce pesticide dependence.
This document discusses pesticides and their environmental impacts. It describes how pesticides are commonly used to control pests that damage crops but can harm non-target species and accumulate up food chains. Some key issues are pesticides polluting soil, air and water; killing beneficial organisms; and reaching toxic levels in top predators through biomagnification. The document also presents alternatives like organic farming that minimize pesticide use through ecological methods, and integrated pest management that employs multiple techniques.
Avs sustainable management of soil borne plant diseasesAMOL SHITOLE
This document discusses sustainable management of soil-borne plant diseases. It defines sustainable management and introduces some of the predominant soil-borne pathogens such as fungi, bacteria, viruses, and nematodes. It then discusses various principles and methods for managing plant diseases sustainably, including cultural methods like crop rotation, date of sowing, nutrient management, organic amendments, cover crops, and depth of sowing. It also discusses physical methods like soil solarization and using barriers to control pathogens. The overall document provides an overview of sustainable approaches for minimizing soil-borne plant diseases.
This document provides information about the biological management of fungal seed-borne pathogens through bioagents. It discusses seed-borne pathogens and diseases and their importance. It defines bioagents and describes their ideal characteristics as well as their modes of action including competition, antibiosis, mycoparasitism, induced systemic resistance, and siderophore production. The document outlines different delivery systems for bioagents, including seed treatment, seed bio-priming, soil amendment, and soil inoculation. It provides details on seed treatment and seed bio-priming methods.
Biopesticide & Biofertilizer - useful for BiotechnologyPrakashPatel781970
Biopesticides are derived from natural sources as alternatives to chemical pesticides. They include microbial pesticides using microbes, and plant-incorporated protectants that genetically modify plants. Microbial herbicides and insecticides control unwanted plants and insects using fungi, bacteria, viruses and entomopathogenic fungi. Biofertilizers are microorganisms that fix atmospheric nitrogen, solubilize phosphorus, or promote plant growth. They improve soil fertility and provide nutrients to plants, but require large amounts and special storage conditions.
This document discusses various methods for controlling plant parasitic nematodes, including cultural, physical, biological, and chemical control methods. Cultural control methods involve practices like crop rotation, soil amendments, flooding fields, and using resistant varieties. Physical control methods include soil solarization, hot water treatment, and irradiation. Biological control utilizes predacious nematodes, fungi, bacteria, and parasitic fungi. The document outlines several important chemical nematicides used for control like ethylene dibromide, dibromochloropropane, methyl bromide, chloropicrin, and others. It provides details on application rates and trade names for some of the chemical options.
Harnessing Nature's Power Microbial Agriculture for Sustainable FarmingEarth Microbial
Microbial Agriculture represents a groundbreaking approach to sustainable farming, utilizing beneficial microorganisms to enhance soil health, nutrient cycling, and pest control. This eco-friendly technique promotes higher crop yields while reducing the need for synthetic inputs, making it a promising solution to address agricultural sustainability and food security challenges.
NEMATODE MANAGEMENT OPTIONS AND APPROACHES FOR ORGANIC FARMING AND PRECISION ...P BHAVANA
This document discusses nematode management options for organic farming and precision farming. For organic farming, the key approaches discussed are using resistant plant varieties and crop rotations to avoid host crops, solarization to heat the soil and kill nematodes, and applying organic amendments to improve soil health and support biological control. For precision agriculture, the document outlines using nematode identification and population assessments, genetically engineered resistant crops, and yield data to precisely target nematode management.
Explore the intricate networks of arbuscular mycorrhizae, essential symbiotic fungi that penetrate plant roots, facilitating nutrient exchange and water absorption. Learn how these microscopic marvels enhance crop productivity, mitigate environmental stress, and contribute to sustainable agriculture practices worldwide. For more information visit:
https://www.rootmaxmycorrhizae.com/mycorrhizae-fungi
MANAGEMENT OF SOIL BORNE PATHOGENS OF VEGETABLE CROPS UNDER PROTECTED CULTIVA...Mayur Thesiya
MANAGEMENT OF SOIL BORNE PATHOGENS OF VEGETABLE CROPS UNDER PROTECTED CULTIVATION
Soilborne pathogens and nematodes are very destructive in vegetables crops and one of the most limiting factors to farmers income. Soil fumigation has been an essential component of greenhouses crops since the 1960s. Growing vegetables without soil fumigants has remained a challenge, in part because commercially acceptable eggplant cultivars produced through conventional breeding lack resistance to many soil borne plant pathogens. Grafting cultivars with high quality and productivity on rootstocks that are resistant to soil pests and diseases is a method known for years ago, but which was improved and quickly spread in the last years. The objective of the researches was to evaluate the performance of the eggplant grafting on the some rootstocks in greenhouse conditions, alone and in combination with soil fumigation using metham sodium. Data obtained in the combinations scion/rootstock and not grafted eggplants were compared with data recorded where the metham sodium fumigant was used and as well as with the combinations grafted eggplants planted in soil disinfested with metham sodium. The marketable yield, fruits quality, frequency and root galling index of soilborne disease and nematodes, in the experimental variants were determined and calculated. Grafting process combined with the metham sodium soil disinfestation led to significant reduction in the incidence of attack produced by soilborne disease (Fusarium oxysporum f. sp. melongenae, Verticillium dahlia) and nematodes (Meloidogine incognita).
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...University of Maribor
Slides from talk:
Aleš Zamuda: Remote Sensing and Computational, Evolutionary, Supercomputing, and Intelligent Systems.
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Inter-Society Networking Panel GRSS/MTT-S/CIS Panel Session: Promoting Connection and Cooperation
https://www.etran.rs/2024/en/home-english/
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This document summarizes information about the genus Trichoderma, a type of fungus known for its ability to control plant pathogens and promote plant growth. Some key points:
- Trichoderma species are common soil fungi that can attack and kill other fungi through mycoparasitism, antibiotic production, and competition for resources. They have been widely used as biocontrol agents against phytopathogens.
- Over 100 Trichoderma species have been identified internationally. They are found in soils worldwide and can colonize plant materials and roots. Trichoderma was first described in the late 18th century and its potential as a biocontrol agent was recognized in the early 20th century.
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This document summarizes information about the genus Trichoderma, a type of fungus known for its ability to control plant pathogens and promote plant growth. Some key points:
- Trichoderma species are common soil fungi that can attack and kill other fungi through mycoparasitism, antibiotic production, and competition for resources. They have been widely used as biocontrol agents against phytopathogens for over 70 years.
- Trichoderma has many advantages as a biocontrol agent, including high reproduction rates, ability to survive harsh conditions, and promotion of plant defenses. However, some species can also be plant pathogens in certain situations.
- Over 100 Trichoderma species have been identified
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This document discusses breeding for pest resistance in vegetable crops. It begins by introducing some key insect pests that damage vegetable crops and cause significant yield losses. It then covers the different mechanisms of insect resistance including nonpreference, antibiosis, tolerance and ecological resistance. The document discusses the genetics underlying insect resistance and describes different breeding methods used for developing resistant varieties like introduction, selection, hybridization and genetic engineering. It also covers techniques for screening vegetable crops for insect resistance in the field and glasshouse. Finally, the document lists some vegetable crop varieties that have been bred for resistance to important insect pests.
Breeding for pest stress in vegetablesMajid Rashid
1) The document discusses breeding for pest stress mechanisms and genetics of resistance in vegetable crops. It covers sources of resistance, breeding methods, and screening techniques.
2) The key mechanisms of insect resistance include nonpreference, antibiosis, tolerance, and ecological resistance. Resistance can be oligogenic, polygenic, or cytoplasmic. Sources of resistance include cultivated varieties, germplasm collections, related wild species, and unrelated organisms.
3) Breeding methods to develop resistant varieties include introduction, selection, hybridization, and genetic engineering. Screening is done in the field or glasshouse to identify resistant plants. Advantages of resistant varieties include inherent pest control without chemicals. Problems include resistance being pest specific and difficulties
Trichoderma is a biocontrol agent that can be used to control plant pathogens and diseases. It acts through mycoparasitism, antibiosis, competition, and induced resistance. Trichoderma species like T. harzianum and T. viride are effective biocontrol agents that can control diseases caused by fungi like Fusarium, Pythium, and Rhizoctonia. Trichoderma is mass produced using liquid or solid state fermentation and formulated products are available from various companies for seed treatment, soil application, and other uses to promote plant growth and manage diseases in agricultural crops.
Genetically modified organisms (GMOs) are organisms whose genetic material has been altered using genetic engineering techniques. This document focuses on transgenic bacteria, which are bacteria that have been genetically engineered to carry and mass produce a selected gene. GM bacteria are useful because they can quickly and easily produce large quantities of a selected gene, which can then be used to create medicines and help the environment. Some benefits of using GM bacteria include degrading oil spills, fixing nitrogen to increase crop production, and creating anti-freezing bacteria to protect plants.
This document summarizes a credit seminar given by Zahid Abass Wazir on ecological engineering as a new direction for agricultural pest management. The seminar discusses ecological engineering as a habitat manipulation technique that focuses on reducing mortality of natural enemies to provide resources like nectar and pollen. It presents the advisory committee for Wazir's PhD, then introduces ecological engineering and its advantages over chemical pesticides. Mechanisms of top-down and bottom-up control are described, as well as ways to enhance natural diversity and design pest-stable agroecosystems through practices like increasing species and genetic diversity. Case studies demonstrating habitat manipulation techniques are also summarized.
The document discusses the characteristics of desirable biocontrol agents. It provides examples of fungal, bacterial, and nematode biocontrol agents like Trichoderma spp, Pseudomonas fluorescens, and Pasteuria penetrans. It explains that an ideal biocontrol agent should be non-pathogenic, have a broad spectrum of activity, mass-produce easily and economically, and establish well in soil with high persistence.
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This document discusses pesticides and their environmental impacts. It describes how monocultures create ideal conditions for pest populations to thrive. Pesticides are commonly used to control pests, but they can harm non-target species and accumulate in organisms through bioaccumulation and biomagnification. Long-term pesticide use can also lead to pest resistance. The document advocates for alternative pest control methods like those used in organic farming to reduce pesticide dependence.
This document discusses pesticides and their environmental impacts. It describes how pesticides are commonly used to control pests that damage crops but can harm non-target species and accumulate up food chains. Some key issues are pesticides polluting soil, air and water; killing beneficial organisms; and reaching toxic levels in top predators through biomagnification. The document also presents alternatives like organic farming that minimize pesticide use through ecological methods, and integrated pest management that employs multiple techniques.
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This document discusses sustainable management of soil-borne plant diseases. It defines sustainable management and introduces some of the predominant soil-borne pathogens such as fungi, bacteria, viruses, and nematodes. It then discusses various principles and methods for managing plant diseases sustainably, including cultural methods like crop rotation, date of sowing, nutrient management, organic amendments, cover crops, and depth of sowing. It also discusses physical methods like soil solarization and using barriers to control pathogens. The overall document provides an overview of sustainable approaches for minimizing soil-borne plant diseases.
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Biopesticides are derived from natural sources as alternatives to chemical pesticides. They include microbial pesticides using microbes, and plant-incorporated protectants that genetically modify plants. Microbial herbicides and insecticides control unwanted plants and insects using fungi, bacteria, viruses and entomopathogenic fungi. Biofertilizers are microorganisms that fix atmospheric nitrogen, solubilize phosphorus, or promote plant growth. They improve soil fertility and provide nutrients to plants, but require large amounts and special storage conditions.
This document discusses various methods for controlling plant parasitic nematodes, including cultural, physical, biological, and chemical control methods. Cultural control methods involve practices like crop rotation, soil amendments, flooding fields, and using resistant varieties. Physical control methods include soil solarization, hot water treatment, and irradiation. Biological control utilizes predacious nematodes, fungi, bacteria, and parasitic fungi. The document outlines several important chemical nematicides used for control like ethylene dibromide, dibromochloropropane, methyl bromide, chloropicrin, and others. It provides details on application rates and trade names for some of the chemical options.
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Explore the intricate networks of arbuscular mycorrhizae, essential symbiotic fungi that penetrate plant roots, facilitating nutrient exchange and water absorption. Learn how these microscopic marvels enhance crop productivity, mitigate environmental stress, and contribute to sustainable agriculture practices worldwide. For more information visit:
https://www.rootmaxmycorrhizae.com/mycorrhizae-fungi
MANAGEMENT OF SOIL BORNE PATHOGENS OF VEGETABLE CROPS UNDER PROTECTED CULTIVA...Mayur Thesiya
MANAGEMENT OF SOIL BORNE PATHOGENS OF VEGETABLE CROPS UNDER PROTECTED CULTIVATION
Soilborne pathogens and nematodes are very destructive in vegetables crops and one of the most limiting factors to farmers income. Soil fumigation has been an essential component of greenhouses crops since the 1960s. Growing vegetables without soil fumigants has remained a challenge, in part because commercially acceptable eggplant cultivars produced through conventional breeding lack resistance to many soil borne plant pathogens. Grafting cultivars with high quality and productivity on rootstocks that are resistant to soil pests and diseases is a method known for years ago, but which was improved and quickly spread in the last years. The objective of the researches was to evaluate the performance of the eggplant grafting on the some rootstocks in greenhouse conditions, alone and in combination with soil fumigation using metham sodium. Data obtained in the combinations scion/rootstock and not grafted eggplants were compared with data recorded where the metham sodium fumigant was used and as well as with the combinations grafted eggplants planted in soil disinfested with metham sodium. The marketable yield, fruits quality, frequency and root galling index of soilborne disease and nematodes, in the experimental variants were determined and calculated. Grafting process combined with the metham sodium soil disinfestation led to significant reduction in the incidence of attack produced by soilborne disease (Fusarium oxysporum f. sp. melongenae, Verticillium dahlia) and nematodes (Meloidogine incognita).
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Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
Corrected slides: dtubbenhauer.com/talks.html
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Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...Leonel Morgado
Current descriptions of immersive learning cases are often difficult or impossible to compare. This is due to a myriad of different options on what details to include, which aspects are relevant, and on the descriptive approaches employed. Also, these aspects often combine very specific details with more general guidelines or indicate intents and rationales without clarifying their implementation. In this paper we provide a method to describe immersive learning cases that is structured to enable comparisons, yet flexible enough to allow researchers and practitioners to decide which aspects to include. This method leverages a taxonomy that classifies educational aspects at three levels (uses, practices, and strategies) and then utilizes two frameworks, the Immersive Learning Brain and the Immersion Cube, to enable a structured description and interpretation of immersive learning cases. The method is then demonstrated on a published immersive learning case on training for wind turbine maintenance using virtual reality. Applying the method results in a structured artifact, the Immersive Learning Case Sheet, that tags the case with its proximal uses, practices, and strategies, and refines the free text case description to ensure that matching details are included. This contribution is thus a case description method in support of future comparative research of immersive learning cases. We then discuss how the resulting description and interpretation can be leveraged to change immersion learning cases, by enriching them (considering low-effort changes or additions) or innovating (exploring more challenging avenues of transformation). The method holds significant promise to support better-grounded research in immersive learning.
mô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốt
trichoderma fungi for disease introduction and methodology
1. Introduction to
Trichoderma Fungi
Trichoderma is a genus of fast-growing, green-spored fungi commonly
found in soil and on decaying wood. These versatile microorganisms have
gained significant attention for their potential in disease control and crop
enhancement. Their remarkable abilities make them a valuable asset in
sustainable agriculture and environmental management.
by Asif Ali
2. Trichoderma Fungi and Disease
Control
Antagonistic Activity
Trichoderma fungi can
directly inhibit the growth of
various plant pathogens
through the production of
antifungal compounds and
enzymes.
Induced Resistance
They can stimulate the
plant's natural defense
mechanisms, making them
more resistant to diseases.
Nutrient
Competition
Trichoderma efficiently
competes with pathogens
for essential nutrients and
space, limiting their ability
to thrive.
3. Mechanisms of Action
1
Mycoparasitism
Trichoderma fungi can directly
parasitize and degrade the cell walls of
other fungi, effectively suppressing
their growth.
2 Antibiosis
They produce a variety of antibiotics
and secondary metabolites that inhibit
the growth of harmful microorganisms.
3
Enzyme Production
Trichoderma secretes enzymes that
can break down the cell walls of
pathogens, leading to their destruction.
4. Trichoderma Strains and Their
Applications
Biocontrol Agents
Different Trichoderma strains
have been isolated and
developed as effective
biocontrol agents against a
wide range of plant
pathogens.
Plant Growth
Promotion
Certain strains can also
stimulate plant growth and
improve nutrient uptake,
leading to enhanced crop
yields.
Environmental
Applications
Trichoderma fungi have been
used for bioremediation,
decomposing organic
pollutants, and improving soil
health.
5. Case Study 1: Trichoderma for
Suppressing Soil-Borne Pathogens
1 Rhizoctonia solani
Control
Trichoderma harzianum
effectively suppressed
the growth of the soil-
borne pathogen
Rhizoctonia solani,
which causes damping-
off and root rot in various
crops.
2 Fusarium
oxysporum
Suppression
Trichoderma asperellum
was found to be highly
effective in controlling
Fusarium wilt, a
devastating disease
caused by the fungus
Fusarium oxysporum.
3 Pythium Inhibition
Trichoderma koningii
demonstrated the ability
to inhibit the growth of
Pythium spp., a group of
soil-borne pathogens
that cause root rot in
plants.
6. Case Study 2: Trichoderma for
Enhancing Crop Yields
Improved Nutrient
Uptake
Trichoderma spp. can
solubilize and mobilize
essential nutrients, such as
phosphorus and iron, making
them more available to
plants.
Increased Drought
Tolerance
Certain Trichoderma strains
can enhance the plant's
ability to withstand drought
stress, leading to improved
crop resilience.
Elevated
Photosynthetic Rates
Trichoderma can stimulate
the plant's photosynthetic
capacity, leading to
increased growth and
biomass production.
7. Challenges and Limitations
1 Environmental
Factors
Trichoderma's efficacy
can be influenced by
factors such as soil type,
temperature, and
moisture levels,
requiring careful
consideration of
application conditions.
2 Strain Specificity
Different Trichoderma
strains may have
varying levels of
effectiveness against
specific pathogens,
necessitating the
selection of the
appropriate strain for
each application.
3 Integration with
Other Methods
Trichoderma-based
approaches are often
most effective when
integrated with other
disease management
strategies, such as crop
rotation and cultural
practices.
8. Conclusion and Future Prospects
Sustainable Agriculture
Trichoderma fungi offer a
promising and eco-friendly
alternative to chemical
pesticides, contributing to the
development of sustainable
agricultural practices.
Environmental
Remediation
Ongoing research explores the
potential of Trichoderma for
bioremediation and improving
soil health, addressing
environmental challenges.
Biotechnological
Advances
The versatility of Trichoderma
fungi has led to their
exploration in various
biotechnological applications,
such as enzyme production
and biofuel development.