Atributos fisicos, químicos e biológicos de latossolo vermelho distrófico de cerrado sob duas rotações de cultura
Carregando...
Data
2007-03
Título da Revista
ISSN da Revista
Título de Volume
Editor
João Batista Duarte
Resumo
The objective of this study was to evaluate the effect of
two crop rotations on soil physical, chemical and biological
attributes of a dystrophic red Oxisol. A randomized block design
with split plot arrangement was used, with six replications. The
treatments were two crop rotations, common bean/soybean +
Brachiaria grass/common bean (F/S+B/F) and common bean/
maize + Brachiaria grass/common bean (F/M+B/F), and a
savannah area ("cerradão") as reference, with soil samples at
depths of 0-2.5 cm and 15-17.5 cm. The samples were collected
in September 2004, at the common bean flowering stage. The
attributes evaluated were: bulk density, total porosity,
macroporosity, microporosity, average geometric diameter,
average weighed diameter, aggregation greater than 2.0 mm, organic
carbon, total nitrogen, microbial biomass carbon, and microbial
quotient. The transition from "cerradão" to agricultural production,
independent of crop rotation, increased soil bulk density
and reduced total pore volume, macroporosity, organic carbon,
total nitrogen, and microbial biomass carbon. The rotation F/
S+B/F reduced soil bulk density and macroporosity, and increasing
microporosity, average geometric diameter, average weighed
diameter, aggregation greater than 2.0 mm, organic carbon, and
total nitrogen, as related to the F/M+B/F rotation.
Descrição
Palavras-chave
Densidade do solo, Biomassa microbiana, Soil density, Microbial biomass
Citação
FONSECA, Graziella Carvalho; CARNEIRO, Marco Aurélio Carbone; COSTA, Adriana Rodolfo da; OLIVEIRA, Geraldo César de; BALBINO, Luiz Carlos. Atributos físicos, químicos e biológicos de latossolo vermelho distrófico de cerrado sob duas rotações de cultura. Pesquisa Agropecuária Tropical, Goiânia, v. 37, n. 1, p. 22-30, jan./mar. 2007. Disponível em: <https://www.revistas.ufg.br/pat/article/view/1861>.