BIO Web of Conferences
Volume 7, 201639th World Congress of Vine and Wine
|Number of page(s)||3|
|Published online||26 October 2016|
Evaluation of gibberllins effects in association with fungicides for control grey mould in grapes merlot
1 Ingeniera agrónoma, Laboratorio de Fitopatología, Universidade de Caxias do Sul, Calle Francisco Getúlio Vargas, 1130, CEP 95070-560, RS, Brazil
2 Prof ∘. Dr ∘ en Fitopatogía, Laboratorio de Fitopatología, Universidade de Caxias do Sul, Calle Francisco Getúlio Vargas, 1130, CEP 95070-560, RS, Brazil
This study was conducted in a commercial vineyard, testing the effect of giberilinas biofungicides associated with the objective to control Botrytis cinerea on grape cultivar Merlot grapes. The experiment was conducted with a randomized block design with 4 treatments and 4 replications. Each plot consisted of four plants. The treatments were: 1. Pro-gibb 200 mg/L pre-flowering, repeated after 10 days at a dose 200 mg/L 2. Pro-gibb in pre-flowering, repeated after 10 days, the dose of 300 mg/L; 3. Pro-gibb 200 mg/L + Serenade 4 mL/L in pre-flowering, in pre-bloom and full bloom, both pellet repeated in stadiums and early grain maturity 4. Pro-gibb 300 mg/L and Stimulate 4 mL/L in pre-flowering, in full bloom, repeated grain pellet and early maturation. The treatment Pro-Gibb 300 mg/L + Serenade 4 mL/L showed a control of 67% compared to gray mold. The treatments did not show satisfactory results for average weight of bunches and ∘Brix. All treatments showed a higher growth of the rachis compared to control and to control Botrytis cinerea in the grape.
© The Authors, published by EDP Sciences 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
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