Competition of fungicides in the control of anthracnosis of grapevine

Abstract

In the region of Caldas, MG. Brazil, the effect of seven fungicides on the anthracnose control of grapevine cultivar Seyve Villard 12375 was tested. In a two-year observation, Captafol has proved to be the most effective one to control the disease, with 99.8% of healthy bunches, followed up by Propineb and Clorothalonil treatments with 81.6% and 77.1%, respectively. The Mancozeb, Folpet and Ziram treatments did not present any differences from each other; however, they presented an inferior performance when compared with previous treatments. The treatment based on copper oxichloride has caused a lower contention of the disease, besides having an evident phytotoxic effect on the crop, as well as an early defoliation after harvesting. As to production, all treatments have overcome the control treatment without application.