5 documents found, page 1 of 1
Multivariate analysis in the evaluation of soil attributes in areas under diffe...
Pantoja,José Carlos Marques; Campos,Milton César Costa; Lima,Alan Ferreira Leite de; Cunha,José Maurício da; Simões,Emily LiraAbstract The recognition of the influence of management practices on soil physical and chemical conditions is substantial for sustainable agriculture. For this reason, this study was developed for the purpose of evaluating the behavior of soil attributes under different uses in the region of Humaitá, AM, using multivariate statistical methods. The study was developed in 8 rural properties producing bananas, gra...
Soil quality and soybean productivity in crop-livestock integrated system in no...
Laroca,Jackeline Vieira dos Santos; Souza,Juliana Mendes Andrade de; Pires,Gabriela Castro; Pires,Gleidson José Coutinho; Pacheco,Leandro PereiraAbstract: The objective of this work was to evaluate the quality of the soil and its relation with soybean (Glycine max) yield in an integrated crop-livestock system (ICLS), with intercropping between grasses and legumes in the pasture phase. The experiment was carried out in the state of Mato Grosso, Brazil, on a dystrophic Oxisol, in which grasses (Megathyrsus maximus 'BRS Tamani' and Urochloa brizantha 'BRS ...
ESTOQUE DE CARBONO DE LATOSSOLOS EM SISTEMAS DE MANEJO NATURAL E ALTERADO
Freitas,Ludmila de; Oliveira,Ivanildo Amorim de; Casagrande,José Carlos; Silva,Laércio Santos; Campos,Milton César CostaRESUMO A conversão da condição natural do solo para a agricultura, em destaque para a monocultura de cana-deaçúcar impõe alterações nos atributos do solo. O objetivo do trabalho foi avaliar a variação do estoque de carbono de Latossolos com mata nativa, cana-de-açúcar e área reflorestada adjacentes, no município de Guariba - SP. Em cada área, foram coletadas, aleatoriamente, quatro amostras (compostas por quinz...
Heavy metal contents in Latosols cultivated with vegetable crops1
Silva,Laércio Santos; Galindo,Izabel Cristina de Luna; Nascimento,Clístenes Williams Araújo do; Gomes,Romário Pimenta; Campos,Milton Cesar CostaABSTRACT Heavy metals are naturally found in soils, but their levels may increase as a result of anthropogenic actions. This study aimed at determining the concentrations of Cd, Cu, Mn, Ni, Pb and Zn in Yellow Latosol from vegetable crops areas, as well as the influence of the cultivation and position in the landscape on the accumulation of these elements. Soil samples were collected from five farming areas and...
Structural quality of polyacrylamide-treated cohesive soils in the coastal tabl...
Melo,Diego Vandeval Maranhão de; Almeida,Brivaldo Gomes de; Souza,Edivan Rodrigues de; Silva,Laércio Santos; Jacomine,Paulo Klinger TitoWater-soluble polymers are characterized as effective flocculating agents due to their molecular features. Their application to soils with horizons with structural problems, e.g, a cohesive character, contributes to improvements in the physical quality and thus to the agricultural suitability of such soils. The purpose of this study was to evaluate the structural quality of soils with cohesive horizons of coast...