Atributos físicos, químicos e biológicos de solo sob produção orgânica impactados por sistemas de cultivo
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Data
2012
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Resumo
This study aimed to determine which attributes of a Cerrado Oxisol under organic production are more
impacted by cropping systems consisted of combinations of common bean and corn crops, no-tillage
(NT) and conventional tillage (CT) systems, and cover crops. Multivariate analysis techniques were
applied on data of four experiments, two of them under NT and the other two in CT, one carried out with
common bean crop and another with corn. The experiments were installed annually since November
2003 in Santo Antônio de Goiás, GO, in randomized block design, with four replications. Samples were
taken from soil layer of 0-0.10 m in September 2003 for the initial chemical analysis (chemical reference).
In November 2007 a new sampling of the plots and of a forest (physical and biological reference) was
performed for determination of soil physical (PA), chemical (CA) and biological (BA) attributes. The
cropping systems caused changes in PA and BA, as compared to the forest, and in CA, as compared to
the initial chemical condition of soil. PA were more sensitive to detect changes in the quality of the soil
under cultivation. The metabolic and microbial quotients were the most negatively affected by CT as
compared to NT. CA were more sensitive in discriminating common bean crop from corn crop.
Descrição
Palavras-chave
Phaseolus vulgaris L., Preparo do solo, Qualidade do solo, Zea mays, Semeadura direta, Phaseolus vulgaris L., Zea mays, No-tillage, Soil tillage, Soil quality
Citação
CUNHA, Eurâimi de Q.; STONE, Luís F.; FERREIRA, Enderson P. de B.; DIDONET, Agostinho D.; MOREIRA, José A. A. Atributos físicos, químicos e biológicos de solo sob produção orgânica impactados por sistemas de cultivo. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 16, n. 1, p. 56-63, 2012.