EFICIÊNCIA DE CONTROLE QUÍMICO SINTÉTICO E BIOINSUMOS CONTRA A FALSA-MEDIDEIRA: AVALIAÇÃO EM SOLANACEAE

Abstract

Potato is one of the most important sources of energy for the world's population. But, they have great hostability to herbivores, such as caterpillars. Chrysodeixis includens (Lepidoptera: Noctuidae) has benefited from green bridges between soy-potatoes, in the Cerrado biome, like this species. The objective of this study was to compare the control efficiency (CE%) of six moderately toxic insecticides (indoxacarb, cyantraniliprole, chlorfenapyr, thiamethoxam+abamectin, cyantraniliprole+abamectin and spinetoram), as well as the microbiological Beauveria bassiana and the virus (ChinNPV+HearNPV ) against that biological target. CE% varied between treatments, ranging from 32.45% to 93.89%. The highest percentage values (regardless of the size of the caterpillars), considering each of the three CE% categories considered (whether low < 80%, medium 80-90% or high >90%), also varied according to the treatments. Indoxacarb presented 58.82% of CE% as average, cyantraniliprole 47.05% as high, chlorfenapyr 41.17% as average, thiamethoxam+ 52.91% as low, cyantranilipole+ 52.94% as average, spinetoram 41.17 % as low, the fungus 72.22% as low and, finally, the virus with 58.84% as high. Concrete alternatives for the adoption of Integrated Management for caterpillars in potato plants are presented.