Título:	Physical attributes of ultisol of Brazil's Northeastern semiarid under organic farming of wine grapes.
Autoria:	FEITOZA, J. R. MENDES, A. M. S. OLSZEVSKI, N. CUNHA, T. J. F. CORTEZ, J. W. GIONGO, V.
Afiliação:	JARDENIA R. FEITOSA, Universidade Federal de Viçosa; ALESSANDRA MONTEIRO SALVIANO MENDES, CPATSA; ELCI OLSZEVSKI, Universidade Federal do Vale do São Francisco/; TONY JARBAS FERREIRA CUNHA, CPATSA; JORGE W. CORTEZ, Universidade Federal da Grande Dourados; VANDERLISE GIONGO, CPATSA.
Ano de publicação:	2015
Referência:	Anais da Academia Brasileira de Ciências, Rio de Janeiro, v. 87, n. 1, p. 483-493, 2015.
Conteúdo:	The purpose of this study was to evaluate the effects of organic farming of wine grapes under physical and chemical characteristics of Ultisol Brazil?s northeastern semiarid region. The samples of soil were collected from the row and interrow of the farming and from the fallow area, at the depths of 0.0-0.10, 0.10- 0.20, 0.20-0.30 and 0.30-0.60 m. The samples were collected at six and twelve months after the culture implementation to evaluate the state of aggregation, bulk density and total soil porosity, flocculation index and organic matter contents, calcium, magnesium, and sodium. The results were submitted to statistical analysis. The adoption of organic farming contributed to the soil aggregation process. The bulk density and total soil porosity did not differ significantly between the evaluations, but were within the critical limits for sandy soils. The index flocculation did not have a great influence on the aggregates formation, being this process influenced by organic matter. The period of one year was considered short to obtain conclusive results in improving the soil quality by organic farming, since there are difficulties in tropical soils in promoting significant increases in organic matter content in short time.
Thesagro:	Uva Solo Agricultura Biológica
NAL Thesaurus:	Aggregate stability Soil quality
Palavras-chave:	Qualidade do solo Uvas para vinho Argissolo Vitivinicultura Organic farming Vitiviniculture
Digital Object Identifier:	10.1590/0001-3765201520130066
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPATSA)