Soil Organic Matter Modeling
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Modeling boron adsorption on five soils before and after removal of organic matter
ABSTRACT Boron- B concentrations that cause deficiency and those that cause toxicity appear to be very similar, compared to other nutrients, which can complicate successful management of this element in soils. In this study, B adsorption onto two Oxisols from Brazil (Rhodic Eutroperox and Anionic Acroperox), two Alfisols (Natric Palexeralf and Aridic Paleust
Sci. agric. (Piracicaba, Braz.). Publicado em: 04/11/2019
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2. GEOSTATISTICAL MODELING OF SOYBEAN YIELD AND SOIL CHEMICAL ATTRIBUTES USING SPATIAL BOOTSTRAP
ABSTRACT The goal of this study was to use the spatial bootstrap method to model the spatial dependence structure of soybean yield and soil chemical attributes in an agricultural area. The study involved developing confidence intervals in probability plots to determine the probability distributions assumed by the data; determine the empirical distributions o
Eng. Agríc.. Publicado em: 19/06/2019
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3. Modeling in the Adjustment of Fertilization Recommendation through Leaf Analysis in Fertigated ‘Prata’ Banana
ABSTRACT: In banana cultivation, fertilization recommendations are almost exclusively based on soil chemical analysis, without considering leaf analysis and expected yield, which can help in the adjustment of fertilization programs. The aim of this study was to develop a method to recommend macronutrient fertilization rates which integrates data on leaf anal
Rev. Bras. Ciênc. Solo. Publicado em: 06/12/2018
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4. Slash Spatial Linear Modeling: Soybean Yield Variability as a Function of Soil Chemical Properties
ABSTRACT: In geostatistical modeling of soil chemical properties, one or more influential observations in a dataset may impair the construction of interpolation maps and their accuracy. An alternative to avoid the problem would be to use most robust models, based on distributions that have heavier tails. Therefore, this study proposes a spatial linear model
Rev. Bras. Ciênc. Solo. Publicado em: 15/02/2018
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5. Evaluación de la mineralización de biosólidos de plantas de tratamiento de aguas residuales domésticas
The biosolids from wastewater Treatment plants have high potential of agricultural application due to the contents of organic matter and nutrients. The mineralization of biosolids from the Cañaveralejo Wastewater Treatment Plant, Cali-Colombia, was evaluated by fitting regression models. The content of NH4+, NO3- and NO2- were monitored during 126 days for
Rev. bras. eng. agríc. ambient.. Publicado em: 2013-04
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6. Simulação da dinâmica de carbono em bacias hidrográficas
In most aquatic ecosystems respiration exceeds autochtonous gross primary production leading to a negative net ecosystem production. Recent studies attributes this condition to allochtonous organic matter degradation processes, so the inland water carbon cycle should be linked to the input of organic carbon from the catchment. This work contributes to a bett
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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7. Modelagem espaço-temporal da alteração pelo cultivo dos estoques de matéria orgânica em solos da região de Vacaria nos Campos de Cima da Serra - Rio Grande do Sul / Spatial-temporal modeling of alteration through the cultivation of organic matter stocks in the soil in the region of Vacaria, in Campos de Cima da Serra – Rio Grande do Sul state
Os modelos de simulação, uma vez calibrados localmente, são ferramentas úteis para a avaliação dos impactos da agricultura sobre a dinâmica do carbono orgânico do solo (COS) e planejamento de sistemas agrícolas sustentáveis em escala regional. O presente trabalho teve como principal objetivo avaliar as alterações no estoque de carbono por meio do
Publicado em: 2010
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8. Soil carbon dynamics under sugarcane / Dinâmica do carbono do solo no agrossistema cana-de-açúcar
No contexto da atual busca por alternativas ao consumo de combustíveis fósseis, a cultura da cana-de-açúcar tem sido apontada como uma das mais viáveis fontes de combustível renovável a partir da biomassa. A tradicional colheita manual, feita após a queima da palhada para facilitar o corte e o transporte, vem sendo substituída pela colheita mecaniza
Publicado em: 2007
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9. Identificação das fontes de poluição atmosférica na cidade de São Carlos-SP.
The quality of the atmospheric air is of great importance for the health of the population. Among the quantifiable aspects of the air quality, one can find the particulate matter (PM) concentration in the atmosphere, whose fine (PM10) and ultra-fine (PM2.5) fractions have been extensively studied, as these particle size fractions are particularly damaging fo
Publicado em: 2005
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10. SOIL ORGANIC MATTER DYNAMICS ON CATTLE RAISING AND CROP PRODUCTION INTEGRATED SYSTEMS UNDER NO TILLAGE / DINÂMICA DA MATÉRIA ORGÂNICA DO SOLO EM ÁREAS DE INTEGRAÇÃO LAVOURA-PECUÁRIA SOB SISTEMA PLANTIO DIRETO
A Integração Lavoura-Pecuária no sul do Brasil baseia-se principalmente na exploração de culturas produtoras de grãos, durante o verão, e na produção de carne bovina sobre pastagens de estação fria, durante o inverno. Esta atividade vem se expandindo rapidamente no Rio Grande do Sul, devido ao aumento da área de cultivo da soja sobre áreas de ca
Publicado em: 2005
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11. EXCHANGEABILITY AND FORMATION CONSTANTS OF COPPER, ZINC AND CADMIUM WITH HUMIC SUBSTANCES AT INDIGENOUS CONCENTRATIONS
A series of laboratory experiments and modeling investigations studied the exchangeability and the formation constants of trace metals with water-soluble humic substances at environmentally realistic concentrations. Copper (Cu2+), zinc (Zn2+), and cadmium (Cd2+) were the studied trace metals. These metals have different affinities for the binding sites of hu
Publicado em: 2001
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12. Spatial and Resource Factors Influencing High Microbial Diversity in Soil
To begin defining the key determinants that drive microbial community structure in soil, we examined 29 soil samples from four geographically distinct locations taken from the surface, vadose zone, and saturated subsurface using a small-subunit rRNA-based cloning approach. While microbial communities in low-carbon, saturated, subsurface soils showed dominanc
American Society for Microbiology.