Título:	Soil organisms in organic and conventional cropping systems.
Autoria:	BETTIOL, W. GHINI, R. GALVAO, J. A. H. LIGO, M. A. V. MINEIRO, J. L. de CARVALHO
Afiliação:	WAGNER BETTIOL, CNPMA; RAQUEL GHINI, CNPMA; JOSE ABRAHAO HADDAD GALVAO, CNPMA; MARCOS ANTONIO VIEIRA LIGO, CNPMA; JEFERSON LUIZ DE CARVALHO MINEIRO.
Ano de publicação:	2002
Referência:	Scientia Agricola, v.59, n.3, p.565-572, 2002.
Conteúdo:	Despite the recent interest in organic agriculture, little research has been carried out in this area. Thus, the objective of this study was to compare, in a dystrophic Ultisol, the effects of organic and conventional agricultures on soil organism populations, for the tomato (Lycopersicum esculentum) and corn (Zea mays) crops. In general, it was found that fungus, bacterium and actinomycet populations counted by the number of colonies in the media, were similar for the two cropping systems. CO2 evolution during the cropping season was higher, up to the double for the organic agriculture system as compared to the conventional. The number of earthworms was about ten times higher in the organic system. There was no difference in the decomposition rate of organic matter of the two systems. In general, the number of microartropods was always higher in the organic plots in relation to the conventional ones, reflectining on the Shannon index diversity. The higher insect population belonged to the Collembola order, and in the case of mites, to the superfamily Oribatuloidea. Individuals of the groups Aranae, Chilopoda, Dyplopoda, Pauropoda, Protura and Symphyla were occasionally collected in similar number in both cropping systems. Key words: soil microorganisms, organic agriculture, microartropods, cropping systems, environmental impacts
Palavras-chave:	Soil organisms Organismos dos solos Sistemas de cultivo
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPMA)