A5088986046- Soil Management and Crop Yield
- Growth and nutrition in plants
- Agricultural and Food Sciences
- Rural Development and Agriculture
- Banana Cultivation and Research
- Crop Yield and Soil Fertility
- Coffee research and impacts
- Agroforestry and silvopastoral systems
- Agronomic Practices and Intercropping Systems
- Agriculture and Rural Development Research
- Soybean genetics and cultivation
- Rice Cultivation and Yield Improvement
- Soil Carbon and Nitrogen Dynamics
- Genetics and Plant Breeding
- Peanut Plant Research Studies
- Plant nutrient uptake and metabolism
- Biodiesel Production and Applications
- Leaf Properties and Growth Measurement
- Environmental and biological studies
- Ruminant Nutrition and Digestive Physiology
- Academic Research in Diverse Fields
- Phytochemistry Medicinal Plant Applications
- Food, Nutrition, and Cultural Practices
- Pineapple and bromelain studies
- Cassava research and cyanide
Brazilian Agricultural Research Corporation
2009-2021
Universidade Federal do Rio Grande do Sul
2006
A definição dos critérios para seleção de materiais é especialmente importante o cultivo do pinhão-manso (Jatropha curcas L.), pois subsidia a caracterização ideótipos mais adequados plantio e progresso genético com prática da seleção. O objetivo deste trabalho foi estimar, por meio análise trilha diagrama em cadeia, os efeitos diretos indiretos sete características vegetativas quatro qualidade matéria-prima sobre rendimento óleo 38 meses cultivo. produtividade grãos teor apresentaram efeito...
O sistema plantio direto melhora a qualidade estrutural do solo. Entretanto, o tráfego de máquinas pode levar à compactação superficial. Nessa situação, mobilização para incorporar calcário, ao mesmo tempo que corrige acidez na camada mobilizada solo, reduz os possíveis efeitos negativos da compactação. Assim, avaliaram-se mobilizar ou não solo por ocasião das reaplicações calcário nos atributos físicos no perfil e rendimento culturas em diferentes sistemas tempos manejo experimento foi...
A melhoria da qualidade estrutural do solo pelo uso continuado sistema semeadura direta ocorre junto com o processo de sua (re)acidificação. Em algumas circunstâncias, também compactação superficial devido ao tráfego máquinas, que necessita ser corrigida pela mobilização solo. Assim, em experimento conduzido há 12 anos sob diferentes sistemas manejo solo, avaliou-se tempo necessário para readquirir os atributos físicos iniciais, alterados no revolvimento por ocasião reaplicação calcário. O...
Abstract: The objective of this work was to evaluate urease inhibitors for the reduction ammonia volatilization in Amazonian soils. carried out on a clayey yellow Oxisol, red and light silty Ultisol. Each experiment conducted split plots, using standard urea, urea + benzimidazole-type inhibitor (BZI1), benzoylthiourea-type (RTB68), N-(n-butyl) triamide thiophosphate (NBPT), or fertilizer-free control. Volatilized collected at 48, 96, 144, 192, 240, 288, 336, 384 hours after fertilization....
This study presents an evaluation of the viability using protected urea under different irrigation depths to reduce nitrogen losses caused by volatilization ammonia (NH3) conditions Southwestern Amazon. The was carried out at Experimental Station Embrapa Rondônia, in municipality Porto Velho, Rondônia State, Brazil. experiment conducted a Red-Yellow Latosol and arranged 5 x 6 factorial design consisting combination five treatments (N sources) with six depths. sources N were as follows: 1)...
Leaf area is an important parameter in agronomic and physiological studies; thereby, the techniques used for its determination should be simple, fast accurate.The objective of this study was to evaluate efficiency equation indirect leaf 'Conilon' (Coffea canephora) genotypes cultivated Western Amazon.The experiment carried out Porto Velho, Rondônia, August September 2011.It arranged a completely randomized 2 × 15 factorial design combining two methods determining (estimated actual) fifteen...
RESUMO – O sistema plantio direto é uma estratégia sustentável de produção que preconiza a manutenção da cobertura vegetal como prática conservacionista do solo. Objetivou-se avaliar o efeito plantas sobre atributos fisiológicos e agronômicos milho na região sudoeste Amazônia. Foram avaliadas 15 estratégias sucessões culturas com influência rendimento biomassa, grãos, altura inserção espiga, índice massa 100 teor foliar nitrogênio clorofilas total, b em milho. Observou-se das biomassa fresca...
Small-scale crop production in many parts of Tanzania is constrained by problems among which soil fertility degradation a major problem. Over 80% cassava (Manihot esculenta) done the small-scale farmers who continuously cultivate their fields, but use limited inputs to restore depleted plant nutrients. The objective this study was examine best legume species that could be incorporated systems under farmers’ conditions and result increase yields. Mucuna pruriens Canavalia ensiformis were...
Abstract: The objective of this work was to analyze the spatial variability soil physical attributes in integrated production systems and its relationship with growth yield a corn (Zea mays) crop intercropped palisade grass (Urochloa brizantha). experiment carried out an crop-livestock (ICL) system crop-livestock-forestry (ICLF) system, Plinthic Hapludox. ICLF managed alleys between eucalyptus (Eucalyptus spp.) rows, spaced at 18, 30, 42 m. Corn grain forage yields were positively correlated...
Soil clay content is an important soil attribute and has been used to classification of phosphorus status in the order determinate needing amounts be applied crops production. The aim this research was adjust method for determination, adopted by laboratories Southern Brazil (ROLAS-RS/SC), evaluation Rondônia soils. study conducted using 50 samples from State with wide range content. It tested shaking periods (1.5, 2.0 2.5h) associated particles decantation (1.5 2.0h) correlate standard...
ABSTRACT Little is known about the management of high-yield clonal Coffea canephora in Amazonian Region, mainly for nutritional aspects and cultivation system efficiency. This study aimed to evaluate influence different nitrogen potassium fertilization rates on coffee grain yield fertilizer use efficiency C. trees. An experiment was performed at an experimental field Embrapa Rondônia Porto Velho (RO), Brazil. It carried out a split-plot scheme with six doses 20-00-20 NPK formulation (0; 250;...