Refinement of different combinations of (Brinjal Shoot and Fruit Borer) in Brinjal

Abstract

BSFB (Brinjal shoot and fruit borer) Lesinoides orbonalis is the most destructive insect for brinjal production. It reduces the value of market price. The experiment comprised eight (8) treatments including one untreated plot. The treatments comprised different rational combinations of mechanical control involving collection and destruction of infested plant parts, use of sex pheromone trap in the centre of the plot and at the canopy level and judicious application of Marshal 20 EC @ 2ml per litter of water based on adult monitoring or routine spray. The treatments differed among themselves in efficacy, and treatment that comprised pheromone trap placed at the plant canopy + mechanical control + spray of Marshal 20 EC @ 2ml per litter of water 2 days interval just from the flowering was adjudged showed significantly lower fruit infestation (different fruiting stage 6.43%, 13.70%, 8.90% respectively) compared to other treatments. Among all the treatment T3 (pheromone trap placed at the plant canopy + mechanical control + spray of Marshal 20 EC @ 2ml per litter of water 2 days interval just from the flowering) was the best option. This treatment also provided the highest benefit cost ratio (2.09) among all the treatments.