Atributos físicos do solo sob diferentes preparos e coberturas influenciados pela distribuição de poros
Carregando...
Data
2010
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
This study aimed to evaluate the influence of pore distribution on some physical attributes of soil under no-tillage (NT) and
conventional tillage (CT) systems, cultivated with different cover crops, in organic production of common bean and corn. The
work was carried out in Santo Antônio de Goiás, GO, on an Oxisol. In November 2003 four experiments were installed, two
of them under NT and the other two under CT. In each soil tillage system, an experiment was conducted with corn and another
with common bean. Sunn hemp, pigeon pea, velvet bean, sorghum, and fallow were compared in a randomized block design,
with four replications. Samples were taken from soil layers of 0-0.10 and 0.10-0.20 m in November 2007, in the plots and
in a near by native forest (Cerrado), for determination of soil organic matter (OM) content and physical attributes. Cerrado soil
use for agricultural production, regardless of tillage system, resulted in decrease of soil total porosity (TP), macroporosity
(Mp), and soil air capacity (SAC). Soil physical attributes were favorably affected by OM. Variations in TP, Mp, SAC, and
available soil water capacity can be explained by variation in soil pore size distribution, mainly by those with > 0.075
mm.
Descrição
Palavras-chave
Phaseolus vulgaris L., Capacidade de aeração do solo, Zea mays, Porosidade do solo, Semeadura direta, Phaseolus vulgaris L., Zea mays, Soil porosity, No-tillage, Soil air capacity
Citação
CUNHA, Eurâimi de Q.; STONE, Luís F.; MOREIRA, José A. A.; FERREIRA, Enderson P. de B.; DIDONET, Agostinho D. Atributos físicos do solo sob diferentes preparos e coberturas influenciados pela distribuição de poros. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 14, n. 11, p. 1160-1169, 2010.