The efficacy of indoxacarb was evaluated for controlling lepidopterous pests on vegetables: Plutella xylostella (Lepidoptera: Yponeumatidae), Trichoplusia ni (Lepidoptera: Noctuidae), Neoleucinodes elegantalis (Lepidoptera: Pyralidae), Helicoverpa zea (Lepidoptera: Noctuidae). The experiments were carried out at three different sites on cabbage and tomato crops. The utilized insecticides were indoxacarb (for tomato from 2.4 to 6.0 g a.i./100 L and for cabbage from 18 to 42 g i.a./ha), esfenvalerate (only for tomato at 1.75 g a.i./100 L), methomyl (for tomato at 21.5 g a.i./100 L and for cabbage at 172 g a.i./ha), deltamethrin (only for cabbage at 6 g a.i./ha) and triflumuron (only for tomato at 15 g a.i./100 L). The experiments were designed as randomized blocks with four replications. The results showed that all doses of indoxacarb presented excellent performance controlling P. xylostella and T. ni on cabbage. Therefore, the lowest tested dose should be used (18 g a.i./100 L). All products reached levels of efficacy higher than 80% for controlling H. zea on tomato crop. Indoxacarb was as efficient as the standard product triflumuron. N. elegantalis was efficiently controlled by the tested insecticides after nine applications and indoxacarb could be recommended at the lowest utilized dose (2.4 g a.i./100 L).
Plutella xylostella; Trichoplusia ni; Neoleucinodes elegantalis; Helicoverpa zea; chemical control; vegetables
