CONTROLE DE Chrysodeixis includens EM BATATA ATRAVÉS DE MANEJO CONVENCIONAL

Abstract

Chemical control in potato crops for consumption or seeds still prevails due to the great negative impact that herbivores can bring to plants, both in the aerial part and in the tubers. The Chrysodeixis includens caterpillar has been observed as a potential pest for defoliating potato plants. Probably due to the soybean-potato planting system adopted in some regions of the Cerrado biome. The present study evaluated the control efficiency (CE%) of the insecticides (T1) Cyantraniliprole + Abamectin (T2) Thiametoxam + Abamectin, (T3) Cyantraniliprole, (T4) Indoxacarb, (T5) Clofenapir and (T6) Spinetoram against this insect. Sampling was performed using a tapping cloth at 0, 7, 14, 21 and 28 days after the weekly application of each treatment. The control efficiency (CE%) of the products evaluated in the present study varied among themselves and for each day after application, with emphasis on Clofenapir, which reached higher efficiency values both earlier and throughout the evaluations. Products capable of influencing populations of defoliating caterpillars more acutely, such as Clofenapir, must be part of the foliar spraying programs in potato crops for control purposes.