Efficacy of Diamide Insecticides Delivered through Different Methods against Shoot and Fruit Borer L. orbonalis.

Abstract

Many vegetables insect pests are managed by using conventional insecticides. Unfortunately, these insecticides are harmful to natural enemies, bees, predators, parasitoids and no longer have some of the insect pests have developed resistance to these insecticides. Diamides insecticides are the new generation insecticides that provide systemic way controlling many arthropod pest, but exhibit low toxicity to beneficial insects some other arthropod pests and may be promising alternative to other conventional insecticides. Field experiment was carried out to evaluate the efficacy of diamides delivered through different during Kharif, 2021-22 with 14 treatments and 2 replications. Diamides may be delivered to brinjal crop via seedling dipping, soil drenching and foliar spraying therefore it is important to determine the most effective pest control strategy while using the least amount of active ingredients. In a case study, chlorantraniliprole flubendiamide and cyantraniliprole were used to control brinjal shoot and fruit borer, Leucinodes orbonalis (Guenee) (Lepidoptera: Pyraustidae) in brinjal. These insecticides administered as foliar spray, soil drenching and seedling dipping were compared, the treatment with foliar application of diamides gave good results as compared to soil drenching and seedling dipping. The results indicated that, diamides were superior to other insecticides used in the present investigation but they failed to give good control when applied through seedling dipping method. Highest C:B ratio (1: 6.07) and yield (47.80t/ha) was recorded in foliar spray of chlorantraniliprole 18.5 SC treated plot.