Título:	Organic and nitrogen fertilization of soil under Syrah grapevine: effects on soil chemical properties and nitrate concentration.
Autoria:	SILVA, D. J. BASSOI, L. H. ROCHA, M. G. da SILVA, A. O. da DEON, M. D.
Afiliação:	DAVI JOSE SILVA, CPATSA; LUIS HENRIQUE BASSOI, CNPDIA; MARLON GOMES DA ROCHA, Instituto Federal de Educação, Ciência e Tecnologia do Sertão Pernambucano, Ouricuri, Pernambuco; ALEXSANDRO OLIVEIRA DA SILVA, Universidade Federal Rural de Pernambuco, Departamento de Engenharia Agrícola, Recife; MAGNUS DALLIGNA DEON, CPATSA.
Ano de publicação:	2016
Referência:	Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 40, p. 1-11, 2016.
Conteúdo:	Viticulture is an activity of great social and economic importance in the lower-middle region of the São Francisco River valley in northeastern Brazil. In this region, the fertility of soils under vineyards is generally poor. To assess the effects of organic and nitrogen fertilization on chemical properties and nitrate concentrations in an Argissolo Vermelho-Amarelo (Typic Plinthustalf), a field experiment was carried out in Petrolina, Pernambuco, on Syrah grapevines. Treatments consisted of two rates of organic fertilizer (0 and 30 m3 ha-1) and five N rates (0, 10, 20, 40, and 80 kg ha-1), in a randomized block design arranged in split plots, with five replications. The organic fertilizer levels represented the main plots and the N levels, the subplots. The source of N was urea and the source of organic fertilizer was goat manure. Irrigation was applied through a drip system and N by fertigation. At the end of the third growing season, soil chemical properties were determined and nitrate concentration in the soil solution (extracted by porous cups) was determined. Organic fertilization increased organic matter, pH, EC, P, K, Ca, Mg, Mn, sum of bases, base saturation, and CEC, but decreased exchangeable Cu concentration in the soil by complexation of Cu in the organic matter. Organic fertilization raised the nitrate concentration in the 0.20-0.40 m soil layer, making it leachable. Nitrate concentration in the soil increased as N rates increased, up to more than 300 mg kg-1 in soil and nearly 800 mg L-1 in the soil solution, becoming prone to leaching losses.
Thesagro:	Uva Solo Fertirrigação Carbono Solução do Solo Vitis Vinifera
NAL Thesaurus:	Fertigation Grapes
Palavras-chave:	Micronutrientes Adubação orgânica
Digital Object Identifier:	10.1590/18069657rbcs20150073
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPATSA)