Uso de indutores de resistência BION® e AGRO-MOS® no manejo da pinta preta na cultura da batata

Abstract

The potato crop is one of the main vegetables grown in Brazil. With a great acceptance and culinary appreciation, this culture requires an adequate phytosanitary management due to the most diverse pathogens that attack it. Among the most important diseases, black spot can be highlighted, which attacks the potato throughout its cycle, significantly compromising its production. In view of this, the objective of this study was to bring alternatives for the control of black spot control, as well as to identify the best way to use resistance inducers in the potato crop. The study was carried out in the 2022/2022 crop in the city of São Francisco de Paula, RS, with the cultivar Àgata. Five treatments were used: Control, Bion (25g/ha), Agro-Mos (1.0L/ha), Bion + Agro Mos and Bion intercalated with Agro-Mos, at the same doses, conducted in randomized blocks. The spraying started at forty days of planting and was repeated every fifteen days, in a total of four sprayings. The variables analyzed were: disease severity at different stages of the crop and total productivity in kg per hectare. Data were submitted to analysis of variance and means were compared by Tukey's test at 5% probability. Significant differences in disease severity were only observed in the last evaluation, highlighting the use of Bion and Agro-Mos, used separately, and also their intermediate use. The use of Bion alone and intercalated with Agro-Mos, promoted an increase in productivity in the potato crop. [resumo fornecido pelo autor]