Title:	Influence of soil pH correction and potassium saturation on quality and stability of Brazilian tropical wines produced in the São Francisco Valley.
Authors:	BIASOTO, A. C. T. DEON, M. D. I. CARVALHO, E. S. S. de PEREIRA, G. E. LIMA, M. A. C. de OLIVEIRA, W. P. CORREA, L. C. BARROS, A. P. A. LIMA, M. dos S. FREITAS, S. T. de LEAO, P. C. de S.
Affiliation:	ALINE TELLES BIASOTO MARQUES, CPATSA MAGNUS DALL IGNA DEON, CPATSA ERIKA SAMANTHA SANTOS DE CARVALHO GIULIANO ELIAS PEREIRA, CNPUV MARIA AUXILIADORA COELHO DE LIMA, CPATSA WALKIA POLLIANA DE OLIVEIRA LUIZ CLAUDIO CORREA, CPATSA ANA PAULA ANDRÉ BARROS MARCOS DOS SANTOS LIMA SERGIO TONETTO DE FREITAS, CPATSA PATRICIA COELHO DE SOUZA LEAO, CPATSA.
Date Issued:	2014
Citation:	In: WORLD CONGRESS OF VINE AND WINE, 37., 2014, Mendonza, Argentina. Vitivinicultura del SUR, confluencia de conocimiento y naturaleza. Mendonza: International Organisation of Vine and Wine, 2014.
Description:	.This study evaluated the influence of soil pH correction and potassium saturation on the quality of Brazilian tropical red wines 'Syrah' from São Francisco Valley. Soil pH correction and potassium saturation were established by applying elemental sulfur, calcium sulphate or potassium chloride to the soil. The experiment followed a 2x3 factorial with two levels of soil exchange complex saturation with base(V) and three percentage of exchangeable potassium in the soil(PKT). The treatments were T1= V 86% and PKT 2.5%; T2 = V 86% and PKT 4.6% (control); T3 = V 86% and PKT 10%; T4 = V 50% and PKT 2.5%; T5 = V 50% and PKT 4.6 %; T6 = V 50% and PKT 10%. The results show that high soil PKT value (10%) reduced must potassium content. Lower soil exchange complex saturation with base (V=50%) with median percentage of exchangeable potassium in the soil (PKT=4.6%) resulted in higher total polyphenols content and organic acid degradation in the berry. The V=86% plus PKT 4.6% and the V=50% plus PKT=4.6% resulted in wines with higher amount of precipitates and highest pH value. The results suggest that these soil management conditions will can promote a great effect on wine quality
Thesagro:	Uva
NAL Thesaurus:	Grapes
Keywords:	Vinho tropical Vale do São Francisco Vitiviniculura Tropical wines
Type of Material:	Artigo em anais e proceedings
Access:	openAccess
Appears in Collections:	Artigo em anais de congresso (CPATSA)