Marchao R. L., Balbino L. C., da Silva E. M., dos Santos J. D. G., de Sa M. A. C., Vilela L., Becquer Thierry. (2007). Qualidade física de um Latossolo Vermelho sob sistemas de integração lavoura-pecuária no Cerrado = Soil physical quality under crop-livestock management systems in a Cerrado Oxisol. Pesquisa Agropecuària Brasileira, 42 (6), p. 873-882. ISSN 0100-204X.
Titre du document
Qualidade física de um Latossolo Vermelho sob sistemas de integração lavoura-pecuária no Cerrado = Soil physical quality under crop-livestock management systems in a Cerrado Oxisol
Marchao R. L., Balbino L. C., da Silva E. M., dos Santos J. D. G., de Sa M. A. C., Vilela L., Becquer Thierry
Source
Pesquisa Agropecuària Brasileira, 2007,
42 (6), p. 873-882 ISSN 0100-204X
The objective of this work was to analyze the effect of integrated crop-livestock systems on soil hydraulic properties, and test the potential use of these properties as physical quality indicators of a Cerrado Oxisol. The field study was conducted at Embrapa Cerrados, Planaltina, DF, Brazil, considering soil layers of: 0-5, 10-15, 20-25 and 40-45 cm. Crop-livestock systems caused significant changes in soil bulk density, volumetric soil-water content, soil penetration resistance, total porosity, macroporosity, effective microporosity, unsaturated pores and available water. An increase was observed in both soil resistance and bulk density for all systems in comparison to the cerrado. However, higher soil resistance did not appear as a limiting factor for annual crops growth in a rotation sequence. Total porosity and macroporosity were higher in the cerrado, and in the systems with no-tillage in relation to conventional tillage. Soil penetration resistance, macroporosity, bulk density and available soil-water properties are reliable indicators of the soil physical quality.
