Atividade enzimática do solo sob sistema de produção orgânica e convencional na cultura da cana-de-açúcar em Goiás
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Data
2012-08
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Resumo
This work aimed to evaluate the activity of enzymes related with the carbon cycle, P mineralization and
total enzymatic activity of soil cultivated with certified organic sugarcane with and without soil tillage,
organic sugarcane under certification, conventional sugarcane with and without residue burning and a
remaining area of Cerrado in Goiatuba, GO, Brazil. Soil samples were collected in March (summer)
and in September (winter) 2009 from 0-10 cm depth for analysis of organic matter, pH, P, granulometry,
total enzymatic activity, β-glucosidase and acid phosphatase. Data were subjected to descriptive and
multivariate analyses. The certified organic management of sugarcane without soil tillage had higher
levels of β-glucosidase activity, indicating increased cycling of organic matter in relation to other
systems. The highest values of acid phosphatase were observed in the samples collected from the
remaining area of Cerrado in the summer, followed by the certified organic management without soil tillage. Lower total enzymatic activity was observed in the management involving residue burning
before the crop harvest. The remaining soil of Cerrado, followed by the certified area with organic
management of sugarcane without soil tillage presented the best indicators of soil quality.
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β-glicosidase, Fosfatase ácida, Atividade enzimática total, Fósforo orgânico, Manejo orgânico, Mineralização do carbono
Citação
EVANGELISTA, Cristiano Ramos; PARTELLI, Fábio Luiz; FERREIRA, Enderson Petrônio de Brito; CORRECHEL, Vládia. Atividade enzimática do solo sob sistema de produção orgânica e convencional na cultura da cana-de-açúcar em Goiás. Semina: ciências agrárias, Londrina, v. 33, n. 4, p. 1251-1262, jul./ago. 2012.