Data/hora: 02/06/2024 12:32:30

Provedor de dados: | 90
País: | Brazil
Título: | Effects of Soil Management Practices on Water Erosion under Natural Rainfall Conditions on a Humic Dystrudept
Autores: | Souza,Vinicius Ferreira Chaves de; Bertol,Ildegardis; Wolschick,Neuro Hilton.
Data: | 2017-01-01
Ano: | 2017
Palavras-chave: | Water and soil losses; Natural rangeland; Burned natural rangeland; No-tillage.
Resumo: | ABSTRACT Water erosion is the main cause of soil degradation and is influenced by rainfall, soil, topography, land use, soil cover and management, and conservation practices. The objective of this study was to quantify water erosion in a Humic Dystrudept in two experiments. In experiment I, treatments consisted of different rates of fertilizer applied to the soil surface under no-tillage conditions. In experiment II, treatments consisted of a no-tillage in natural rangeland, burned natural rangeland and natural rangeland. Forage turnip, black beans, common vetch, and corn were used in rotation in the treatments with crops in the no-tillage during study period. The treatments with crops and the burned rangeland and natural rangeland were compared to a bare soil control, without cultivation and without fertilization. Increasing fertilization rates increased organic carbon content, soil resistance to disintegration, and the macropore volume of the soil, due to the increase in the dry mass of the crops, resulting in an important reduction in water erosion. The exponential model of the ŷ = ae-bx type satisfactorily described the reduction in water and soil losses in accordance with the increase in fertilization rate and also described the decrease in soil losses in accordance with the increase in dry mass of the crops. Water erosion occurred in the following increasing intensity: in natural rangeland, in cultivated natural rangeland, and in burned natural rangeland. Water erosion had less effect on water losses than on soil losses, regardless of the soil management practices.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100513
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/18069657rbcs20160443
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.41 2017
Fonte: | info:eu-repo/semantics/openAccess