Data/hora: 04/06/2024 09:21:59

Provedor de dados: | Bragantia
País: | Brazil
Título: | Variability of physical properties of soil and rice grown under cover crops in crop-livestock integrated system
Autores: | Trevisan,Rodrigo Gonçalves; Freddi,Onã da Silva; Wruck,Flávio Jesus; Tavanti,Renan Rimoldi; Peres,Fernanda Salles Cunha.
Data: | 2017-03-01
Ano: | 2017
Palavras-chave: | Orysa sativa; Soil management; Agricultural sustainability.
Resumo: | ABSTRACT The production systems of upland rice culture in Mato Grosso are not consolidated yet while the effects of soil physical properties and their correlation with rice yield in crop-livestock integrated systems are not defined as well. Therefore, this study determined the spatial variability of physical properties of soil and rice cultivated in no-tillage system under different cover crops, using principal components analysis and geostatistics. The experiment was conducted in Santa Carmen, northern Mato Grosso. A regular grid with 100 sample points distributed in an area of 26,400 m2 was installed. Soil and rice samples were collected to determine rice variables and soil physical properties. The average rice yield was 1.70 Mg∙ha−1, ranging from 0.70 to 3.12 Mg∙ha−1. The highest yields were observed in consortium with cowpea and brachiaria and were associated with lower incidence of grain spots, despite higher soil density and penetration resistance. The consortium with brachiaria, crotalaria, and sudangrass had lower yields, which was associated with higher incidence of grain spots, despite higher soil macroporosity and total porosity.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100145
Editor: | Instituto Agronômico de Campinas
Relação: | 10.1590/1678-4499.596
Formato: | text/html
Fonte: | Bragantia  v.76 n.1 2017
Fonte: | info:eu-repo/semantics/openAccess