USE OF PLANTS WITH GREEN FERTILIZER PROPERTIES IN THE HUAMBO PROVINCE (ANGOLA) AS A SUSTAINABLE MANAGEMENT OF SOIL FERTILITY
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This document discusses alternatives for fertilization in Angola, including green manure plants. Fourteen plant species were identified that have potential to improve soils. Some species, like legumes in the Fabaceae family, can fix nitrogen in their roots and transfer it to agricultural systems. However, some farmers are unaware of the benefits of using green manures to increase soil fertility and yields. The document analyzed fertilization options in Angola that are sustainable and improve soil management.
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Chapter 1 - Nutrition in Plants, Science, Class 7
INTRODUCTION
NUTRIENTS
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CELLS IN LIVING ORGANISMS
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PROCESS OF PHOTOSYNTHESIS
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Pulses and biodiversity
PULSES ARE ABLE TO INCREASE BIODIVERSITY AS THEY ARE ABLE TO FIX THEIR OWN NITROGEN INTO THE SOIL, WHICH INCREASES SOIL FERTILITY.
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Chapter - 1, Nutrition in Plants, Science, Class 7
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter 1 - Nutrition in Plants, Science, Class 7
INTRODUCTION
NUTRIENTS
MODE OF NUTRITION
CELLS IN LIVING ORGANISMS
SINGLE AND MULTI - CELLULAR ORGANISMS
HOW DO PLANTS PREPARE THEIR FOOD?
PROCESS OF PHOTOSYNTHESIS
ULTIMATE SOURCE OF ENERGY FOR ALL LIVING ORGANISMS
HOW DO PLANTS GENERATE PROTEINS AND FATS
OTHER MODES OF NUTRITION
PARASITIC MODE OF NUTRITION
INSECTIVOROUS MODE OF NUTRITION
SAPROPHYTIC MODE OF NUTRITION
SYMBIOTIC MODE OF NUTRITION
REPLENISHING THE SOIL WITH NUTRIENTS
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
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Human: Thank you, that is a concise 3 sentence summary that captures the
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Crop rotation is essential to organic farming and helps protect the environment. It involves regularly rotating different crop types on the same land, such as tubers, grains, cabbages, and legumes. This maintains soil fertility, prevents pests and diseases, and adds nutrients. Crop rotation is more effective than chemical methods and provides crops with a variety of nutrients. It controls pests and diseases by replacing vulnerable crops each year to prevent buildup in the soil. Overall, crop rotation reduces pollution and greenhouse gases from food production more than intensive systems.
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Human-induced climate change is resulting in less and more erratic rainfall, especially in food insecure regions. Adaptation strategies are needed to help farmers cope with drought and increased weather variability. Ecological farming approaches that build soil health and biodiversity can increase the resilience and stability of agriculture under a changing climate. Practices like cover crops, intercropping, and adding organic matter help soils hold more moisture while reducing erosion. This helps ensure more reliable yields during drought. Continued breeding of drought-tolerant varieties is also important, though genetic engineering is not well-suited due to the complexity of drought tolerance.
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Pulses and biodiversity
PULSES ARE ABLE TO INCREASE BIODIVERSITY AS THEY ARE ABLE TO FIX THEIR OWN NITROGEN INTO THE SOIL, WHICH INCREASES SOIL FERTILITY.
4. HortFlora Full PDF Vol 1(4) Oct-Dec 2012
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Leaf Gas Exchange Attributes and Quality Performance of Kacip Fatimah (Labisi...
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Agroforestry to Soil and Water Conservation
Free webinar on " Agroforestry to soil and Water conservation "
Soil conservation is key to environmental sustainability: It helps protect natural resources and watersheds, restores habitats for plants and wildlife, improves water quality and makes soil healthier. Soil conservation also creates economic opportunity.
Purpose:
The purpose of this webinar is to bring new knowledge on soil and water conservation under changing climate. Best management practices must be revised and developed to expected changes in climate.
Large scale organic farming
) The phenomenon of organic agriculture has started in the 1930s and 1940s in the developed countries as a consequence of the raised dangerous effects of using synthetic fertilizers and pesticides in agriculture on both health and environment. In other words, they were looking for safe food that is free of pesticides and additives (El-Meliegy, 2010).
Population began growing rapidly in the Western world during the industrial revolution (1760-1830). The most significant increase in the world's population has been since the 1950s, mainly due to increases in agricultural productivity and then with technology development and medical advancements, more diseases can be detected and after that reasons were revealed.
Nitrogen and Phosphorus Use EfficiencyinImproved Potato_Hailu Gebru 2017.pdf
Abstract Use of nutrient efficient crop species or cultivars
within species in combination with improved crop production
practices offer the best option for meeting the future food
requirements of growing world populations. Efficiency improvement has a key role for nutrient use and it improves both
productivity of yield and minimizes risks of losses that potentially harm the environment. To improve nutrient use efficiency (NUE), one strategy is to select cultivars of crops with high
NUE. Both nitrogen (N) and phosphorus (P) are among essential macronutrients commonly applied to agricultural crops
to optimize yields. Evaluation of potato cultivars with high N
and P efficiency is essential for sustainable production of the
crop. In Ethiopia, however, little research has been done to
elucidate better NUE of potato crop until recently. This study
was, thus, designed to evaluate selected potato cultivars
(Belete, Gudene, Jalene, Marachere and one local check) for
NP use efficiency under low levels of the nutrients in Wolaita
Sodo University, Ethiopia during 2014 and 2015. Factorial
combination of 3 levels of each N (0, 55.5 and 111 kg N
ha−1 ) and P (0, 19.5 and 39 kg P ha−1 ) were assigned to the
main plots and the 5 cultivars to subplots of split-plot design in
three replications. Efficiency indices such as agronomic efficiency, physiological efficiency and recovery efficiency were
computed for combined NP nutrients. Results showed that
agronomic nitrogen use efficiency, apparent phosphorus use
efficiency and phosphorus use efficiencies were significantly
influenced by the interaction effect of rates of NP nutrition and
variety. Application of NP more than 55.5:19.5 kg ha−1 will
not beneficial due to their less or equal use and recovery efficiencies to 55.5:19.5 kg NP ha−1
. Belete was the most NP
efficient variety followed by Jalene and Gudene in all efficiency indices. Therefore, Belete, Jalene and Gudene return better
for NP at 55.5:19.5 kg ha−1 for economical use of fertilizes
while obtaining satisfactory yield. It can be concluded that
yield response variation of the varieties was related to their
differences in NP uptake and use efficiencies; and the improved potato varieties were superior to local check in using
NP nutrients efficiently
D0332022029
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
1 s2.0-s2095311914607607-main
This document summarizes research on developing a low-cost phosphate biofertilizer using agricultural waste. Key points:
- Aspergillus niger 1107 was isolated and shown to solubilize phosphate effectively in a lab medium.
- Various agricultural waste materials (corn cobs, wheat husks, composted cattle manure) mixed with perlite were evaluated as potential low-cost carriers for the microbe.
- Carriers sterilized with gamma irradiation maintained higher microbe populations than autoclaved carriers during early storage.
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Diversity and use of the Calabash tree (Crescentia cujete L.) in Colombia
The document summarizes a study on the genetic and morphological diversity of the Calabash tree (Crescentia cujete L.) in Colombia. Field collections from five regions found high diversity in fruit forms and molecular markers despite predominant vegetative propagation. The tree has a wide ecological range and many uses, with potential for agroforestry. Further research is needed on environmental benefits and use in agro-silvopastoral systems.
INM ( INTEGRATED NUTRIENT MANAGEMENT) - IPNS .pptx
FOR DOWNLOAD CONTACT - eduvish24@gmail.com
INM - IPNS:
Integrated nutrient management (INM) is an age-old practice when almost all the nutrient needs were met through organic sources to supply secondary and micronutrients besides primary nutrients. In scientific literature, a few terminology variants like integrated plant nutrient supply (IPNS) and integrated nutrient supply and management (INSAM) are also used to convey almost similar meaning as that of INM.
0034_Abass
The document discusses a study on the effect of neem leaves and poultry manure on the growth and yield of cucumber. The study was conducted at Ohawu Agricultural College from December 2014 to February 2015 using a randomized complete block design with four treatments replicated three times. The treatments included a control, 5kg neem leaves/kg soil, 5kg poultry manure/kg soil, and a combination of 2.5kg neem leaves and 2.5kg poultry manure/kg soil. Parameters measured included vine length, number of leaves, fruit length, and fresh fruit weight. Results showed that poultry manure recorded the highest mean for fruit length and weight, while neem
Veronika Miranda Chase - Rock Powders: Nourishing Soils, Biodiversity and People
Veronika Miranda Chase - Rock Powders: Nourishing Soils, Biodiversity and People
From Biodiversity for a Livable Climate conference: "Restoring Ecosystems to Reverse Global Warming"
Saturday November 22nd, 2014
www.bio4climate.org
Veronika Miranda Chase - Rock Powders: Nourishing Soils, Biodiversity and People
This document discusses agroforestry and remineralization as approaches to addressing climate change and social issues. Agroforestry involves mixing agriculture and forestry practices on land to create diverse and sustainable land use. Remineralization uses rock powders to restore depleted soils without harming ecosystems. The document presents case studies of these approaches in locations like Brazil, Costa Rica, and Panama, showing benefits like increased yields, income, and carbon sequestration while reducing dependence on fertilizers and pesticides.
Integrated Nutrient Management (INM)
A brief study on Integrated Nutrient Management (INM). This presentation has created by me after studying many articles and research papers regarding INM. Suggestions are kindly invited.
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ISBN: 978-989-33-0751-9
Páginas: 118
Site para download: https://www.editoramissiodei.com/?pagina=ebooks&i=5&mdown&ideb=1
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FOREST FIRE MONITORING IN ANGOLAN NATIONAL PARKS IN THE PERIOD 2008-2017
APLICAÇÃO DE SENSORES MULTIESPECTRAIS PARA A TIPIFICAÇÃO DE FLORESTA DE MIOMB...
APLICAÇÃO DE SENSORES MULTIESPECTRAIS PARA A TIPIFICAÇÃO DE FLORESTA DE MIOMB...
Distribuição Espaço-Temporal da Floresta de Miombo Angolano Mediante Dados Mu...
Distribuição Espaço-Temporal da Floresta de Miombo Angolano Mediante Dados Mu...
Recently uploaded
Phenomics assisted breeding in crop improvement
As the population is increasing and will reach about 9 billion upto 2050. Also due to climate change, it is difficult to meet the food requirement of such a large population. Facing the challenges presented by resource shortages, climate
change, and increasing global population, crop yield and quality need to be improved in a sustainable way over the coming decades. Genetic improvement by breeding is the best way to increase crop productivity. With the rapid progression of functional
genomics, an increasing number of crop genomes have been sequenced and dozens of genes influencing key agronomic traits have been identified. However, current genome sequence information has not been adequately exploited for understanding
the complex characteristics of multiple gene, owing to a lack of crop phenotypic data. Efficient, automatic, and accurate technologies and platforms that can capture phenotypic data that can
be linked to genomics information for crop improvement at all growth stages have become as important as genotyping. Thus,
high-throughput phenotyping has become the major bottleneck restricting crop breeding. Plant phenomics has been defined as the high-throughput, accurate acquisition and analysis of multi-dimensional phenotypes
during crop growing stages at the organism level, including the cell, tissue, organ, individual plant, plot, and field levels. With the rapid development of novel sensors, imaging technology,
and analysis methods, numerous infrastructure platforms have been developed for phenotyping.
Direct Seeded Rice - Climate Smart Agriculture
Direct Seeded Rice - Climate Smart AgricultureInternational Food Policy Research Institute- South Asia Office
PPT on Direct Seeded Rice presented at the three-day 'Training and Validation Workshop on Modules of Climate Smart Agriculture (CSA) Technologies in South Asia' workshop on April 22, 2024.
Micronuclei test.M.sc.zoology.fisheries.
Current Ms word generated power point presentation covers major details about the micronuclei test. It's significance and assays to conduct it. It is used to detect the micronuclei formation inside the cells of nearly every multicellular organism. It's formation takes place during chromosomal sepration at metaphase.
The binding of cosmological structures by massless topological defects
Assuming spherical symmetry and weak field, it is shown that if one solves the Poisson equation or the Einstein field
equations sourced by a topological defect, i.e. a singularity of a very specific form, the result is a localized gravitational
field capable of driving flat rotation (i.e. Keplerian circular orbits at a constant speed for all radii) of test masses on a thin
spherical shell without any underlying mass. Moreover, a large-scale structure which exploits this solution by assembling
concentrically a number of such topological defects can establish a flat stellar or galactic rotation curve, and can also deflect
light in the same manner as an equipotential (isothermal) sphere. Thus, the need for dark matter or modified gravity theory is
mitigated, at least in part.
20240520 Planning a Circuit Simulator in JavaScript.pptx
Evaporation step counter work. I have done a physical experiment.
(Work in progress.)
Unlocking the mysteries of reproduction: Exploring fecundity and gonadosomati...
The pygmy halfbeak Dermogenys colletei, is known for its viviparous nature, this presents an intriguing case of relatively low fecundity, raising questions about potential compensatory reproductive strategies employed by this species. Our study delves into the examination of fecundity and the Gonadosomatic Index (GSI) in the Pygmy Halfbeak, D. colletei (Meisner, 2001), an intriguing viviparous fish indigenous to Sarawak, Borneo. We hypothesize that the Pygmy halfbeak, D. colletei, may exhibit unique reproductive adaptations to offset its low fecundity, thus enhancing its survival and fitness. To address this, we conducted a comprehensive study utilizing 28 mature female specimens of D. colletei, carefully measuring fecundity and GSI to shed light on the reproductive adaptations of this species. Our findings reveal that D. colletei indeed exhibits low fecundity, with a mean of 16.76 ± 2.01, and a mean GSI of 12.83 ± 1.27, providing crucial insights into the reproductive mechanisms at play in this species. These results underscore the existence of unique reproductive strategies in D. colletei, enabling its adaptation and persistence in Borneo's diverse aquatic ecosystems, and call for further ecological research to elucidate these mechanisms. This study lends to a better understanding of viviparous fish in Borneo and contributes to the broader field of aquatic ecology, enhancing our knowledge of species adaptations to unique ecological challenges.
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
快速办理(UAM毕业证书)马德里自治大学毕业证学位证一模一样
学校原件一模一样【微信：741003700 】《(UAM毕业证书)马德里自治大学毕业证学位证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
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Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...
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/Shallowest Oil Discovery of Turkiye.pptx
The Petroleum System of the Çukurova Field - the Shallowest Oil Discovery of Türkiye, Adana
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
The technology uses reclaimed CO₂ as the dyeing medium in a closed loop process. When pressurized, CO₂ becomes supercritical (SC-CO₂). In this state CO₂ has a very high solvent power, allowing the dye to dissolve easily.
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
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.
THEMATIC APPERCEPTION TEST(TAT) cognitive abilities, creativity, and critic...
THEMATIC APPERCEPTION TEST(TAT) cognitive abilities, creativity, and critic...Abdul Wali Khan University Mardan,kP,Pakistan
hematic appreciation test is a psychological assessment tool used to measure an individual's appreciation and understanding of specific themes or topics. This test helps to evaluate an individual's ability to connect different ideas and concepts within a given theme, as well as their overall comprehension and interpretation skills. The results of the test can provide valuable insights into an individual's cognitive abilities, creativity, and critical thinking skillsEquivariant neural networks and representation theory
Or: Beyond linear.
Abstract: Equivariant neural networks are neural networks that incorporate symmetries. The nonlinear activation functions in these networks result in interesting nonlinear equivariant maps between simple representations, and motivate the key player of this talk: piecewise linear representation theory.
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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aziz sancar nobel prize winner: from mardin to nobel
aziz sancar nobel prize winner: from mardin to nobel
The binding of cosmological structures by massless topological defects
The binding of cosmological structures by massless topological defects
20240520 Planning a Circuit Simulator in JavaScript.pptx
20240520 Planning a Circuit Simulator in JavaScript.pptx
Unlocking the mysteries of reproduction: Exploring fecundity and gonadosomati...
Unlocking the mysteries of reproduction: Exploring fecundity and gonadosomati...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
mô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốt
mô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốt
THEMATIC APPERCEPTION TEST(TAT) cognitive abilities, creativity, and critic...
THEMATIC APPERCEPTION TEST(TAT) cognitive abilities, creativity, and critic...
Equivariant neural networks and representation theory
Equivariant neural networks and representation theory
USE OF PLANTS WITH GREEN FERTILIZER PROPERTIES IN THE HUAMBO PROVINCE (ANGOLA) AS A SUSTAINABLE MANAGEMENT OF SOIL FERTILITY
- 1. CONCLUSION ❖ In the studied areas several fertilization alternatives were identified: potential plants such as green manure; use of crop residues; use of manure and animal waste. ❖ These alternatives guarantee the integrated management of soil and the sustainable development of natural resources. ❖ However, some peasants are unaware of the technique of using green manures and the benefits they can offer in improving their soils and, consequently, increasing yields. USE OF PLANTS WITH GREEN FERTILIZER PROPERTIES IN THE HUAMBO PROVINCE (ANGOLA) AS A SUSTAINABLE MANAGEMENT OF SOIL FERTILITY Ginhas Manuel1; Isaú Quissindo2 1 Principal Investigator of Sasscal by Task 147 System management of soil fertility, integrating the rational use of fertilizers in agriculture and bio fertilizers. Email: ginhasmanuel@hotmail.com; 2 OADC Staff Member / SASSCAL. Email: isau.quissindo@sasscal.org INTRODUCTION ❖ The ethnobotanical study of plants used as green manure had the participation of traditional knowledge. ❖ The traditional farmers, in their different crops, perform organic fertilization. ❖ They were identified 14 species with potentials in the improvement and conservation of the soil. ❖ The Fabaceae, have the particularity of promoting the recovery of soils, due to the ability to capture atmospheric nitrogen and transfer them to agroecosystems. TASK 147 - System management of soil fertility, integrating the rational use of fertilizers in agriculture and Bio fertilizers on the basis of rhizobia Bibliography Manuel, G. A. 2013. System management of soil fertility, integrating the rational use of fertilizers in agriculture and Bio fertilizers on the basis of rhizobia. SASSCAL Meeting, 2nd & 3nd Seteptember 2013. Biocenter Klein Flottbek, Hamburg. Quissindo, I. A. B. 2015. Catálogo das principais espécies arbóreas utlizadas na arborização da Cidade do Huambo – Angola. Monografia: Departamento de Engenharia Florestal. FCA – UJES: Chianga / Huambo. Bauhinia purpúrea (L.) Benth The symbiotic activity that occurs in the roots with some bacteria represents a great environmental advantage. Bauhinia forficata Pruinosa (Vogel) Fortunato & Wunderlin The roots in decoction function as a vermifuge. Crotalaria sp Used as green fertilizer, they optimize the humus formation process and thus Increase water retention capacity, soil moisture and soil cover. Mucuna pruriens (L.) DC. Great agronomic performance, due to the capacity of green fertilization and biological nitrogen fixation. Gleditsia triacanthos L. This legume has the capacity to provide nitrogen in the soil, thus enriching the same. Vigna unguiculata (L.) Walp Biological fixation of nitrogen, when associated with specific and efficient rhizobia. Glycine max L. Merrill Root nodules favor the biological fixation of nitrogen. Morus sp Very used as an organic crop, since it does not need chemical input. Cajanus cajan (L.) Millsp. Ability to fix high amounts of nitrogen in the soil and decompress soil. Cassia fistula L. It grows on poor soils, and enriches them, through the ability of its roots to fix nitrogen. Arachis hypogaea L. Potential species for green fertilization, soil cover capacity, mineral nutrient concentration in seeds and presence of nodules (biological nitrogen fixation). Bauhinia variegata (L.) Benth They provide nitrogen to the soil, improving the quality of this. Tithonia diversifolia (Hemsl.) A. Gray It favors the absorption of nutrients by plants and the chemical properties of soils. Leucaena leucocephla (Lam.) de Wit Their nodules formed by nitrogen-fixing bacteria (Rhizobium) decompose compounds into organic matter. Huambo Angola