A5080487951- Soil Management and Crop Yield
- Soil Carbon and Nitrogen Dynamics
- Growth and nutrition in plants
- Soil and Water Nutrient Dynamics
- Environmental and biological studies
- Geography and Environmental Studies
- Soil erosion and sediment transport
- Agricultural and Food Sciences
- Banana Cultivation and Research
- Crop Yield and Soil Fertility
- Theology and Canon Law Studies
- Religious and Theological Studies
- Soil Geostatistics and Mapping
- Sugarcane Cultivation and Processing
- Forest Biomass Utilization and Management
- Forest Ecology and Biodiversity Studies
- Composting and Vermicomposting Techniques
- Forest ecology and management
- Rice Cultivation and Yield Improvement
- Sustainable Agricultural Systems Analysis
- Clay minerals and soil interactions
- Conservation, Biodiversity, and Resource Management
- Agriculture and Rural Development Research
- Municipal Solid Waste Management
- Plant Ecology and Soil Science
Universidade Federal Rural do Rio de Janeiro
2012-2021
Universidad Pontificia Bolivariana
2020
Universidade Federal do Rio de Janeiro
2014
National Council for Scientific and Technological Development
2011
Pontifical Gregorian University
2010
Brazilian Agricultural Research Corporation
2009
O objetivo deste trabalho foi avaliar os teores de carbono orgânico total (COT), matéria orgânica leve (MOL) e fósforo remanescente (Prem), em áreas cerrado sob sistema plantio direto com diferentes cultivos coberturas do solo, compará-los aos preparo convencional pousio. experimento conduzido campo, um Latossolo Vermelho, agosto 2000 a março 2007. delineamento utilizado o blocos ao acaso parcelas subdivididas, sendo as constituídas pelos cinco sistemas manejo solo avaliados - pousio, uso...
The dynamics of soil aggregation, including aggregate formation by biogenic and physicogenic processes, is affected the management system. present study aimed to divide aggregates into physicogenic, characterise in terms exchange complex, distribution total organic carbon (TOC), nitrogen (N) levels, natural 13C 15N abundance, determine C levels matter (SOM) fractions aggregates. areas studied were under a no-till system (NTS) established 15 years before, conventional tillage (CTS) managed...
The soil organic matter (SOM) content and dynamic are related to vegetation cover, climate, relief, geology; these factors have strong variation in space the southeastern of Brazil. objective study was compare evaluate performance classical multiple linear regressions (MLR) geographically weighted regression (GWR) models predict carbon (SOC) chemical fractions Brazilian mountainous region. were fitted based on SOC SOM. points ( = 89) selected by pedologist's experience along transects...
The crop-livestock integration system significantly increases the carbon content in chemical fractions of soil organic matter (SOM). This study aimed to evaluate indicators SOM attributes for sites under brachiaria/livestock and pearl millet/no livestock Goias, Brazil. A third area covered with natural Cerrado vegetation (Cerradão) served as reference. Soil was randomly sampled at 0-5, 5-10, 10-20 20-40 cm. Total stocks (TOC), oxidizable (OCF) (F1>F2>F3>F4), humin (C-HUM), humic...
RESUMO Os objetivos deste estudo foram avaliar a deposição de serapilheira ao longo dois anos e qualidade nutricional da serapilheira, em função do espaçamento plantio visando à restauração florestal. espaçamentos 1 × 1; 1,5 1,5; 2 3 m, constituem as unidades amostrais dos tratamentos. No m foi observada maior não havendo diferenças entre demais espaçamentos. A fração folha mostrou, todos os espaçamentos, aporte (77%). O conteúdo nutrientes observado no m. Em geral, constatou-se seguinte...
Bulk density (Bd) can easily be predicted from other data using pedotransfer functions (PTF). The present study developed two PTFs (PTF1 and PTF2) for Bd prediction in Brazilian organic soils horizons compared their performance with nine previously published equations. Samples of 280 soil used to develop containing at least 80 g kg-1 total carbon content (TOC) were obtained different regions Brazil. multiple linear stepwise regression technique was applied validate all the equations an...
An important strategy for the sustainable management of Cerrado soils is no-till (NT) systems, which may improve soil properties, particularly aggregation. Soil aggregates can be categorized according to their formation pathways into physicogenic (Phy) and biogenic (Bio). This study aimed (i) quantify relative proportion (ii) evaluate levels total organic carbon respective humic physical fractions in aggregates’ pathways. The following managed unmanaged sites were [...]
This study aimed to quantify the light organic matter mass (LOM) in water, free fraction (FLF) of soil (SOM) and carbon (C), nitrogen (N) contents natural abundance δ13C e δ15N contained LOM, C N FLF land use systems Cerrado region Goiás State, Brazil. Were evaluated a crop-livestock integration system - CLIS (corn+brachiaria/bean/cotton/soybean) no-tillage NTS (sunflower/millet/soybean/corn). The vegetal coverage Cerrado, adjacent CLIS, was considered as original condition. Soil samples...
O aporte de matéria orgânica ao solo via leguminosas em sistemas aleias pode ser uma alternativa para o uso sustentável do trópico úmido. objetivo deste trabalho foi comparar facilmente oxidável proveniente da combinação resíduos diferentes utilizadas condução culturas sob Argissolo Vermelho-Amarelo. Foram avaliadas duas espécies alta qualidade - leucena (Leucaena leucocephala) e guandu (Cajanus cajan), baixa sombreiro (Clitoria fairchildiana) acácia (Acacia mangium), combinadas entre si,...
Humic fractions of soil organic matter (SOM) and measurements 13 C 15 N isotope can be used to highlight differences between management systems with different intensities land use.This study characterized fertility, quantified carbon levels in the humic evaluated natural abundance cultivated under no-tillage system (NTS) conventional tillage (CTS) or secondary forest perennial pasture Marmeleiro, Parana State, Southern Brazil.NTS was more efficient than increasing pH (0.0-0.10 m layer), Ca...
The cover plant use preceding grain crops in Cerrado soil can increase the carbon stocks of chemical and physical fractions organic matter (SOM). present study aimed to quantify SOM granulometric humic a area under no-tillage system with different plant, compare results those from conventional tillage fallow areas, Uberaba, MG, Brazil. implemented were: millet, tropical grass sunn hemp. Furthermore, an was used another as control (conventional tillage). After crop removal, areas were...
diferentes sistemas de uso do solo no Cerrado.Foram avaliadas duas áreas com
In the Cerrado, palm swamps ( veredas ) are characterized by being humid and stable environments that lead to formation of Histosols Organossolos ). soils with surface horizons organic constitution, which fragile sensitive anthropic action. This study aimed evaluate impact anthropization (recurrent forest fires livestock farming) on chemical, physical morphological properties in two Environmental Preservation Area (EPA) Pandeiros [...]
The crop-livestock integration system (CLIS) associated to a no-tillage (NTS) may increase mineralizable carbon, organic carbon and nitrogen of soil macroaggregates when compared with only NTS area, without grazing. aim this study was quantify total (TOC) in different land management systems Cerrado region, Goias State. Were evaluated two areas crop rotation: CLIS (Brachiaria+corn/bean/cotton/soybean) (sunflower/millet/soy/corn). A area natural vegetation taken as reference for the original...
This study aimed to measure the concentrations of carbon (C), nitrogen (N) and natural abundance 13 C 15 N in macro microaggregates under systems land use.We sampled 0-5 5-10 cm layers no-tillage system (NTS), conventional tillage (CTS), secondary forest pasture southern Brazil.The largest variations were found for 8-2 mm aggregate class, with sequence > = NTS CTS, compared 0.25-0.105mm class.The most negative δ values least macroaggregates.Plowing harrowing CTS cause fracturing soil...
ABSTRACT A significant increase in the use of integrated farming systems have been observed Brazilian Cerrado, such as crop-livestock integration (CLI), which combined with no-tillage system (NTS) shown influence on soil properties. Therefore, objective this work was to evaluate a CLI chemical, physical and microbiological characteristics, an area Cerrado biome, Montividiu, State Goias, Brazil. The fertility, remaining phosphorus (Prem), total organic carbon (TOC), nitrogen (Nt), aggregate...
Were quantified the plant residues on soil, total soil organic carbon (TOC) and nitrogen (TN) contents different matte (SOM) fractions to determine 13C 15N isotopic composition in crop–livestock integration system (CLIS), pasture Cerrado areas, Goias, Brazil. TOC TN, C N light matter content (C-LOM/N-LOM); of particulate (C-POM/N-POM); mineral (C-MOM/N-MOM) were evaluated. δ13C δ15N LOM, POM, MOM fractions, as well residues, also determined. Plant from more enriched with nutrients C, CLIS...
The objective of this study was to verify the influence agroecological handling in distribution stable aggregates water and levels aggregate organic carbon under different vegetable covers. Five areas were selected: agroflorestal system; fig cultivation (Ficus carica L.); passion fruit (Passiflora edulis S.) Desmodium sp. consortium; bean (Phaseolus vulgaris L), conventional corn (Zea mays), no-tillage system. In each area, undisturbed samples collected, 0-5 5-10 cm depths, (OCAGR)...
<p>Crop-livestock integration (CLI) coupled with a no-till planting system (NTS) has proven to be an important alternative farming system, promoting efficient land use and soil conservation by maintaining organic matter (SOM). The present study quantified the humic fractions of SOM P analyzed their relationship in CLI, pasture natural Cerrado areas Goiás, Brazil. samples were obtained from area (covered <em>Urochloa decumbens</em> grass for 15 years); CLI (planted annual...