Título:	Nitrogen supply method affects growth, yield and must composition of young grape vines (Vitis vinifera L. cv Alicante Bouschet) in southern Brazil.
Autoria:	STEFANELLO, L. O. SCHWALBERT, R. SCHWALBERT, R. A. DE CONTI, L. KULMANN, M. S. de S. GARLET, L. P. SILVEIRA, M. L. R. SAUTTER, C. K. MELO, G. W. B. de ROZANE, D. E. BRUNETTO, G.
Afiliação:	Lincon Oliveira Stefanello, Soil Science Department of Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil; Raíssa Schwalbert, Agronomy Department of Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil; Raí Augusto Schwalbert, Agricultural Engineering Department of Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil; Lessandro De Conti, Federal Institute Farroupilha, Santo Augusto Campus, 98590-000, Santo Augusto, RS, Brazil; Matheus Severo de Souza Kulmann, Soil Science Department of Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil; Luana Paula Garlet, Soil Science Department of Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil; Marcia Liliane Rippel Silveira, Food Technology Department of Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil; Cláudia Kaehler Sautter, Food Technology Department of Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil f National Research Center of Grape and Wine, Brazilian Agricultural Research Corporation (Embrapa), 95700-000, Bento Gonçalves, RS, Brazil; GEORGE WELLINGTON BASTOS DE MELO, CNPUV; Danilo Eduardo Rozane, Fruticulture Department of Paulista State University, 11900-000, Registro, SP, Brazil; Gustavo Brunetto, Soil Science Department of Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil.
Ano de publicação:	2019
Referência:	Scientia Horticulturae, v. 261, (e-108910), 2019.
Conteúdo:	The aim of this study was to evaluate yield and chemical composition of the must in grapevines subjected to Nitrogen (N) supply methods in sandy soils. The vineyard cultivar was ?Alicante Bouschet? (Vitis vinifera L.) grafted on 1103 Paulsen rootstock, in southern Brazil. The treatments consisted of the application of 20+20 kg N ha−1 without irrigation (NWI), 20+20 kg N ha−1 followed by irrigation (NFI), 20+20 kg N ha−1 via fertigation (NF), 20 kg N ha−1 via fertigation (½NF), and a control (C) without N application. The study was conducted during four crop seasons. Leaves were collected at flowering and veraison to determination N concentration. Stem diameter, grape yield and its components were determined. In the must were evaluated the total soluble solids (TSS), pH, total titratable acidity (TTA) and total anthocyanins (TA). The concentration of nitrate and ammonium in soil solution was determined. N application followed by irrigation or N supplied via fertigation provided to the vines larger stem diameters and leaf N concentrations, in most crop seasons. Grapevines submitted to N application via fertigation or followed by irrigation presented higher yields than conventional application without irrigation, and between two and three times higher than the control. N supply methods little affected total soluble solids contents. The application of N to the soil, regardless of the N supply method, decreased the anthocyanin concentration in the grape must, due to the dilution effect on the pulp/skin ratio, promoted by the yield increase.
NAL Thesaurus:	Anthocyanins
Palavras-chave:	Nitrogen fertilization Nitrogen fertigation Leaf N concentration Field study Long-term
Digital Object Identifier:	https://doi.org/10.1016/j.scienta.2019.108910
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPUV)