A5072843582- Soil Management and Crop Yield
- Growth and nutrition in plants
- Banana Cultivation and Research
- Crop Yield and Soil Fertility
- Agricultural and Food Sciences
- Soil Carbon and Nitrogen Dynamics
- Soil Geostatistics and Mapping
- Agroforestry and silvopastoral systems
- Rural Development and Agriculture
- Ruminant Nutrition and Digestive Physiology
- Effects of Environmental Stressors on Livestock
- Agriculture Sustainability and Environmental Impact
- Geography and Environmental Studies
- Sugarcane Cultivation and Processing
- Soil and Land Suitability Analysis
- Phosphorus and nutrient management
- Animal Nutrition and Physiology
- Agronomic Practices and Intercropping Systems
- Plant nutrient uptake and metabolism
- Plant Micronutrient Interactions and Effects
- Environmental and biological studies
- Remote Sensing in Agriculture
- Leaf Properties and Growth Measurement
- Soil and Water Nutrient Dynamics
- Polymer-Based Agricultural Enhancements
Brazilian Agricultural Research Corporation
2016-2025
Secretaria de Estado de Segurança Pública
2023
Universidade Federal do Ceará
2021
University of Padua
2003-2018
National Council for Scientific and Technological Development
2010
National University of the Northeast
2009
Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
2002
Empresa de Pesquisa Agropecuária do Estado do Rio de Janeiro
2002
Methodist University of Piracicaba
1994
The present study describes the preparation and characterization of a novel urea slow-release nanocomposite, based on intercalation into montmorillonite clay by an extrusion process at room temperature. Nanocomposites with contents ranging from 50 to 80 wt % were successfully produced characterized. Analyses XRD, DTA, SEM-EDX confirmed effectiveness this simple exfoliate lamellae matrix, forming product that can be classified as due exfoliation degree attained. Diametral compression tests...
The rapid hydrolysis of urea applied to the soil surface causes high rates NH3 volatilization, leading adverse environmental impacts and decreased uptake N by crops. One approach that can be used improve efficiency use involves strategies control its release, such as coating granules with polymers. However, effectiveness this method limited poor interaction between granule surface. We, therefore, propose a novel class nanocomposite fertilizers, based on clay exfoliation in matrices, or...
This study aimed to evaluate the production characteristics of pastures in integrated livestock systems. For that, an experiment was carried out São Carlos, SP, Brazil, from 2013 2015. Forage development, and nutritive value were evaluated five beef cattle systems: extensive continuous stocking (Urochloa decumbens) = EXT; intensive INT; crop-livestock iCL; livestock-forest iLF crop-livestock-forest iCLF. Rotational INT, iCL, iCLF systems established with Urochloa brizantha cv. BRS Piatã. In...
Agroforestry systems are often promoted as solutions to address land degradation and climate change. However, agroforestry is an umbrella term for a large variety of it not clear how their degree complexity influences provision soil-based ecosystem services, such soil organic carbon (SOC) storage nutrient cycling. Furthermore, knowledge gap remains whether perform equally well on all types. The objectives this study were 1) assess the links between complexity, cycling SOC fractions, 2)...
On tropical soils, liming and balanced nutrient supply are essential to ensure high crop yield quality. An adequate agronomic management should be a nutrition fertilizers the key factor on supplying nutrients. Urea is most commonly used fertilizer-N source, despite potential losses by NH3 volatilization. Thus, new technologies needed support increasing demand avoid low N use efficiency (NUE). The reduction of NH3-N volatilization can achieved natural aluminosilicates with nitrogenous...
Soil organic matter (SOM) plays a key role in the global carbon and nitrogen cycles. biogeochemistry is regularly studied by extracting base-soluble fractions of SOM: acid-insoluble humic acid (HA) acid-soluble fulvic (FA). Electrospray ionization–Fourier transform–ion cyclotron resonance–mass spectrometry (ESI-FT-ICR-MS) commonly utilized for molecularly characterizing these fractions. Different sample preparation techniques exist analysis HA FA though questions remain regarding data...
The objective of this study was to evaluate the effect different pasture systems on beef steers’ performance, dry matter intake, enteric methane emission, carcass production, forage quality, and animal production per hectare (ha). trial conducted at Embrapa Southeast Livestock, São Carlos/SP, Brazil. Sixty Cachim steers (5/8 Charolais × 3/8 Zebu) with initial liveweights 255 ± 7 kg were evaluated for two years under five grazing (EXT = Extensive; INT Intensive; iCL Integrated crop livestock;...
Zeolites are hydrated crystalline aluminosilicate minerals of natural occurrence, structured in rigid third dimension net that can be used as slow release plant-nutrient source. The main objective this study was to evaluate the effects plant growth substrate under zeolite application, enriched with N, P and K, on dry matter yield nutrient contents consecutive crops lettuce, tomato, rice, andropogon grass. experiment carried out a greenhouse, 3 kg pots an inert substrate, evaluated randomized...
ABSTRACT The knowledge of soil property spatial variability is useful for determining the rational use inputs, such as site-specific application lime and fertilizer. objective this study was to evaluate vegetation index physical chemical properties in an integrated crop-livestock system (ICLS). Soil samples were taken from a 6.9 ha area regular hexagon grid at 0-0.20 m depths. P, K, Ca, Mg, cation exchange capacity - CEC; base saturation; clay sand analyzed. electrical conductivity (ECa)...