EFFECTS OF SOIL TILLAGE AND CROP ROTATION SYSTEMS ON SOIL PHYSICAL ATTRIBUTES

• Autor(a) principal: Neto, Américo Nunes da Silveira
• Data de Publicação: 2007
• Outros Autores: Silveira, Pedro Marques da, Stone, Luís Fernando, Oliveira, Luiz Fernando Coutinho de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Agropecuária Tropical (Online)
• Texto Completo: https://revistas.ufg.br/pat/article/view/2169
• topic: Savannah; millet; corn; no-tillage; soybean; common bean; Cerrados; milheto; milho; plantio direto; soja; feijão

The objective of this study was to evaluate the effects of soil tillage and crop rotation systems on soil physical attributes. The experiment was conducted for five consecutive years and ten crop seasons in a dystrophic Oxisol in Santo Antônio de Goiás, Goiás State, Brazil, in a completely randomized design with four replications arranged in a 2 x 4 factorial split plot. Tillage systems were assigned to plots: (P1) no-tillage followed by plowing and (P2) continuous no-tillage; and crop rotations were assigned to subplots: (R1) millet - common bean - millet - common bean - rice - common bean - millet - common bean - millet - common bean, (R2) millet - common bean - soybean - common bean - rice - common bean - millet - common bean - corn - common bean, (R3) millet - common bean - millet - common bean - rice - common bean - corn - common bean, and (R4) soybean - common bean - corn - common bean - rice - common bean - soybean - common bean - corn - common bean. Tillage and crop rotation systems affected soil bulk density, macroporosity, and total porosity. Continuous no-tillage increased soil bulk density and decreased soil macroporosity and total porosity. Soil organic matter content was inversely correlated to soil bulk density and directly correlated to soil macroporosity. KEY-WORDS: Savannah; millet; corn; no-tillage; soybean; common bean.