Efecto del ácido salicílico en combinación con el fungicida penconazol, para el control de mancha chocolate (Botrytis fabae)

Abstract

The cultivation of broad beans in the central Andean zone of Ecuador is constantly attacked by the Botrytis fabae chocolate stain, which is why new sanitary products are being sought for its control. The objective of this research was to evaluate the effect of salicylic acid combined with penconazole, in different doses. The trial was carried out in the province of Tungurahua, Quisapincha parish, in the cultivation of broad bean (Vicia faba), a machete variety in open field conditions. A completely randomized block experimental design was used, three repetitions per treatment, a chemical control and an absolute control. The treatments were salicylic acid alone and salicylic acid + penconazole, in three different doses: 1.5, 2 and 2.5 g of salicylic acid and 0.5 ml of penconazole. The incidence percentage, severity, degree of intensity of the disease and performance per treatment were evaluated. The results obtained indicate that the chemical control was the most effective treatment to control the disease, while salicylic acid in doses of 1.5 g, / l of water reduces the attack of the fungus, and the combination of salicylic acid + penconazole showed a greater degree of involvement by the disease; production costs and yield are favored by applying salicylic acid in the bean crop.