Browsing by Author "Torres, E."

Now showing 1 - 2 of 2
  • Microbiological parameters as indicators of soil quality under various soil management and crop rotation systems in southern Brazil
    Franchini, J. C.; Crispino, C. C.; Souza, R. A.; Torres, E.; Hungria, M. (Amsterdam, Netherlands: Elsevier B.V., 2007)
    This article attempts to recognize soil parameters that can be used to monitor soil quality under different crop and soil management systems. The rates of CO2 emissions (soil respiration) were affected by variations in the sampling period, as well as in soil management and crop rotation. Considering all samples, CO2 emissions were 21% greater in conventional tillage. Soil microbial biomass was also influenced by sampling period and soil management, but not by crop rotation. The parameters associated with microbiological activity are useful indicators of soil quality in the tropics.
  • No tillage and crop rotation effects on soil aggregation and organic carbon in a Rhodic Ferralsol from southern Brazil
    Madari, B.; Machado, P. L. O.A.; Torres, E.; de Andrade, A. G.; Valencia, L. I. O. (Elsevier B.V., 2005)
    This paper discusses a study of aggregation in a clayey Brazilian soil under no tillage or conventional tillage (disc plowing and harrowing), with a forested soil for reference. The most significant differences between tillage practices were seen in the surface 5 cm of soil. NT had more aggregate stability, bigger proportion of large aggregates, greater total organic carbon, and more TOC in macroaggregates.