Alternativas de manejo da antracnose na pós-colheita da manga.

Abstract

The postharvest losses worldqide and national level reach large proportions, in the Brazilian regional economy, qualitatively and quantitatively affect quality of mango fruits. The postharvest diseases make consumption and commercialization unfeasible, among which anthracnose caused by Colletotrichum gloesporioides deserves special mention. Alternative methods have been tested, aiming to minimize the use of chemicals. Therefore, the objective of the present work was to evaluate the control effect of mango anthracnose using plant extracts and resistance inducers, comparing it with chemical fungicides. The treatments used were: garlic, angico, basil and pepper extracts; Bion, Agromos and Ecolife resistance inducers; in addition to the chemical fungicides Dithane/Mancozeb and Cupravit/Cober Oxychloride. The mycelial growth of the pathogen and the severity of anthracnose were evaluated in mango fruits artificially inoculated with fungal mycelium discs. The results obtained demonstrate that the garlic extract proved to be effective in controlling C. gloesporioides, presenting a significant inhibitory effect on mycelial growth in vitro and on the severity of post-harvest anthracnose in mango fruits, and can be used as an alternative control in a sustainable disease management program; while the inducer Bion only showed in the mycelial growth of C. gloesporioides.