A5083499280- Soil Carbon and Nitrogen Dynamics
- Soil Management and Crop Yield
- Agronomic Practices and Intercropping Systems
- Agricultural and Food Sciences
- Agroforestry and silvopastoral systems
- Legume Nitrogen Fixing Symbiosis
- Geography and Environmental Studies
- Environmental and biological studies
- Soybean genetics and cultivation
- Heavy metals in environment
- Soil and Land Suitability Analysis
- Fish biology, ecology, and behavior
- Nematode management and characterization studies
- Growth and nutrition in plants
- Enzyme Production and Characterization
- Agricultural pest management studies
Universidade Federal Rural de Pernambuco
2013-2025
Universidade Federal de Pernambuco
2020
Universidade Federal de Lavras
2017
Abstract The silvopastoral system avoids the degradation of tropical grasslands by providing essential nutrients to soil while improving livestock diet and farmer's income increasing marketable wood supply. We hypothesize that intercropping shrub‐tree legumes into signalgrass increases microbial activity organic matter (SOM) quality. investigated soils over 5 yr in a subhumid climate northeastern Brazil determine total C N contents estimate C‐microbial biomass respiration, metabolic...
Neste trabalho objetivou-se avaliar o efeito do monocultivo e consórcio de macaúba pastagem sobre a qualidade química os compartimentos carbono em Latossolo Vermelho-Amarelo no Cerrado Maranhense. Foram estudados quatro sistemas uso solo: macaúba, pastagem, consorciada com vegetação nativa cerrado. Nesses foram coletadas amostras solo da superfície até 60 cm, para determinação dos atributos químicos teores estoques orgânico solo. Os maiores valores P, K, Ca Mg observados nas áreas sob...
Cowpea (Vigna unguiculata L Walp) is a legume of great social and economic importance in tropical regions.The plant tolerant to soil climatic adversity, while it has high nutritional value with protein, minerals vitamins contents.The cowpea very ability fix N 2 which important because can reduce the costs soluble mineral fertilizers may contribute sustainable agriculture, preserving environment natural resources.In order observe influence Rhizobia agronomic effectiveness strains was tested...
Legume green manure is a popular practice for sustainable agriculture in tropical environments. The use of grain, forage and purely legumes subhumid area Northeast Brazil was investigated to determine the total C N contents estimate C-microbial biomass, soil basal respiration, microbial metabolic quotients, before after manures following corn. It hypothesized that, although all would increase biomass activity, there be different effects function main economic usage legume. experimental...
Objetivou-se, neste estudo, avaliar a variabilidade espacial das frações da matéria orgânica do solo em uma área degradada recuperação com pinhão-manso; para isto se estabeleceu, um Argissolo Vermelho-Amarelo, malha de 30 por m amostragem, totalizando 55 pontos. Em cada ponto foram coletadas amostras nas camadas 0-0,05; 0,05-0,10 e 0,10-0,20 determinados carbono orgânico total (COT), lábil (CL) o ácido fúlvico (C-FAF), húmico (C-FAH) humina (C-HUM). Os maiores teores COT observados na camada...
The effective symbiotic activity of rhizobia can contribute increment biological nitrogen fixation (BNF), which is great importance in low technology regions.This study aimed to evaluate the efficiency native from Brazilian Northeast soils for selection most efficient and competitive strains Leucaena leucocephala plant.The greenhouse test was conducted factorial scheme (7x3), with seven fertilization treatments three soil classes (Luvisol, Ultisol Oxisol).The were: (a) four isolates,...
Biological nitrogen fixation (BNF) is the main form of introducing into systems with low fertilizer input, which prevail in semi-arid region Brazil. BNF was evaluated leucena and sabia grown samples a soil collected under different vegetation cover: native vegetation; capoeira (area abandoned for restoration); agricultural use; grove; grove. Nodulation abundant all types cover. Leucena exhibited highest dry biomass nodules, while same cover provided lowest nodules sabia. Growth shoot were...