Dynamics of soil microbiological attributes under integrated production systems, continuous pasture, and native cerrado

作者：Duarte de Oliveira Willian Roberson; Gerosa Ramos Maria Lucrecia; de Carvalho Arminda Moreira; Coser Thais Rodrigues; Miranda Silva Antonio Marcos; Lacerda Manuel Messias; Souza Kleberson Worslley; Marchao Robelio Leandro; Vilela Lourival; Pulrolnik Karina

来源：Pesquisa Agropecuaria Brasileira, 2016, 51(9): 1501-1510.

DOI：10.1590/S0100-204X2016000900049

• integrated crop-livestock-forestry system
• soil management
• soil microbial biomass
• soil quality

The objective of this work was to evaluate the dynamics of soil microbiological attributes under integrated production systems, continuous pasture, and native cerrado. The study was conducted in a transition area from crop to livestock. Four areas with different land uses were evaluated: an integrated crop-livestock forestry system (ICLFS), cultivated with Eucalyptus urograndis alley cropping, spaced 2x2 m between plants and 22 m between alleys; an integrated crop-livestock system (ICLS); besides two adjacent areas of native cerrado and continuous pasture, used as a reference. For the assessment of microbiological attributes, soil samples were taken in the 0.00-0.10, 0.10-0.20, and 0.20-0.30-m layers, in February 2012 and February 2014 (rainy season), and in July 2012 and September 2013 (dry season). In general, soil under native cerrado had the highest microbial biomass carbon (MBC) levels, while under the ICLFS it had the lowest ones. The ICLS increased MBC and microbial coefficient in the deeper soil layers, after two years of establishment. Basal respiration, microbial biomass nitrogen, and MBC are the soil microbiological attributes better able to differentiate the evaluated systems.

• 出版日期2016-9