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Defoliation levels on gas exchange and composition of grape clusters cv. Italia. Repositório Alice
SOUZA, E. R.; RIBEIRO, V. G.; DANTAS, B. F.; LIMA FILHO, J. M.; ONO, E. O..
The objective of this study was to evaluate the influence of defoliation on gas exchange of vine leaves at different phenological stages, and also in the development of clusters and berries of cv. Italia in the Valley of Submédio San Francisco. It was performed four levels of defoliation (5, 10, 15 and 20 leaves kept in production branch) and nine repetitions. The assessments of gas exchange (CO2 assimilation rate (A, ?mol CO2 m-2 s-1), transpiration rate (E, mmol water steam m-2 s-1), stomatal conductance (gs, mol m-2 s -1), water use efficiency (USA ?molCO2; mmol H2O)-1, carboxylation activity of the ribulose enzyme 1,5-diphosphate carboxylase (Rubisco) and leaf temperature were determined in four phenological phases (60, 72, 84 and 106 days after...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Vitis vinifera; Ttaxa de assimilação; Crescimento baga; Uva; Grapes.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/991544
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Ecophysiological responses of the winegrape Chenin Blanc under different irrigation management in the São Francisco river valley. Repositório Alice
LIMA FILHO, J. M.; COSTA, A. L. C.; SOARES, J. M.; PEREIRA, G. E.; SANTOS, J. de O.; ALENCAR, Y. C. L. de..
The So Francisco Valley has been considered a new growing region for wine grapeproduction. In this region, the wines have a typical taste and are the unique ones producedunder tropical conditions. Because the irrigation management is one of the most importantfactors related to grape and wine quality, a study was carried out by the Embrapa Semirido,in the VINIBRASIL Farm vineyards, at Lagoa Grande, State of Pernambuco, Brazil inwhich the grapevine ¡§Chenin Blanc¡¨, grafted onto the IAC 572 rootstock, and spaced by 1,0m x 3,0 m, was submitted to different irrigation managements: T1) 75% Kc; T2) 50% Kc; T3)50 % Kc until 80 days after pruning and then 75% Kc until harvest and; T4) about 30% Kc(Farm management). Irrigation water was applied by dripping and the...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Uva; Videira; Fotossintese.
Ano: 2007 URL: http://www.alice.cnptia.embrapa.br/handle/doc/160504
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