DESFOLHA DE Chrysodeixis includens EM PLANTAS DE BATATA SOB AÇÃO DE QUÍMICOS SINTÉTICOS

Abstract

Among the potato defoliating insects, Chrysodeixis includens (Lepidoptera: Noctuidae) has attracted the attention of potato producers in areas belonging to the Cerrado biome. In the last three annual harvests, the occurrence of this insect has been more common than normal, suggesting the study of a control method, including its defoliation in potato plants. The present study evaluated the level of defoliation provided by caterpillars of Chrysodeixis includens after exposure to insecticides (T1) Cyantraniliprole + Abamectina (T2) Thiametoxam + Abamectina, (T3) Cyantraniliprole, (T4) Indoxacarb, (T5) Clofenapir and (T6) Spinetoram. The determination of the level of defoliation was carried out through a scale of notes. In general, the highest defoliation levels came from the treatments Thiametoxam + Abamectina and Control. The other treatments showed intermediate values. The treatment that promoted the lowest average percentage of defoliation was Ciantraniliprole + Abamectina among all evaluated treatments. Synthetic chemical products with the greatest potential to prevent large defoliation in potato plants may be part of an important Integrated Pest Management strategy.