efeito do ácido giberélico, do bioestimulante crop set e do anelamento na produção e na qualidade da uva 'thompson seedless' no vale do são francisco effect of gibberellic acid, girdling and the biostimulant crop set on yield and quality of bunches in grapes cv. thompson seedless in the são francisco valley

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ID: 200914
2005
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Abstract
O objetivo do presente trabalho foi avaliar os efeitos do ácido giberélico, do bioestimulante Crop Set e do anelamento sobre o aumento do tamanho de bagas e a produtividade da uva 'Thompson Seedless' no Vale do São Francisco. O experimento foi conduzido durante dois ciclos de produção (2001 e 2002), no Campo Experimental de Bebedouro, pertencente à Embrapa Semi-Árido, em Petrolina-PE. Utilizou-se do delineamento experimental de blocos ao acaso, com 12 tratamentos e 3 repetições. Os tratamentos corresponderam à aplicação de ácido giberélico em cinco fases de desenvolvimento da videira, nas doses de 10 + 15 + 15 +50 + 50 mg.L-1, do bioestimulante Crop Set em duas doses de 0,1 e 0,2% e do anelamento no caule, isolados e combinados entre si. Os tratamentos combinados de anelamento + ácido giberélico e anelamento + ácido giberélico + Crop Set destacaram-se como aqueles que promoveram os maiores peso e tamanho de cachos e de bagas, com diferenças significativas em relação à testemunha. Entretanto, o anelamento não cicatrizou completamente, causando a morte de plantas, recomendando-se cautela na sua realização. Apesar de não se observar efeito significativo dos tratamentos sobre a produtividade, pode-se notar um aumento de 63% para o tratamento anelamento + ácido giberélico em relação ao ciclo de produção de 2001.
The present research was aimed to evaluate the effects of the gibberellic acid, the biostimulant Crop-Set and girdling applied during bloom and post-bloom stage to improve yield and berry size of the grape cv. Thompson Seedless in the São Francisco River Valley, Northeast of Brazil. The trial was carried out throughout two growing seasons (2001 and 2002) in the Bebedouro Experimental Station, Embrapa Semi-Árido, Petrolina, PE. The trial was laid out in a randomized complete block design with three replicates, each replicate consisting of a four-tree plot. The treatments were: gibberellic acid aplied during five phases of development (10 + 15 + 15 + 50 + 50 mg.L-1 doses), Crop-Set in two doses 0,1 and 0,2% and trunk girdling, isolated or combined to each other. The combination treatments of girdling + gibberellic acid and girdling + gibberellic acid + Crop Set showed the best results, promoting the largest weight of bunches and size of berries with significative diferences compared to control. On the other hand, girdling caused damage in the tissue cicatrization and death of plants, so it is recomended caution to practice it. The yield was increased 63% in the combination girdling + gibberellic acid in the growing season of 2001, although it had not been observed significative diferences among treatments.
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leo2005revistaefeito Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Patricía Coelho de Souza Leão;Davi José Silva;Emanuel Élder Gomes da Silva
Journal technocom
Year 2005
DOI
10.1590/S0100-29452005000300019
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452005000300019
Keywords
vitis vinifera

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