MANAGEMENT OF TOMATO FRUIT BORER (Helicoverpa armigera Hubner) THROUGH BIO AND CHEMICAL PESTICIDES

Abstract

An experiment was conducted during October 2020 to May 2021 at Sher-e-Bangla Agricultural University's central field in Dhaka-1207, Bangladesh, to test the efficiency of certain bio and chemical pesticides against the tomato fruit borer (Helicoverpa armigera Hubner). Seven treatments were under this trial viz., T1 (neem oil @ 3 ml/l of water), T2 (neem seed karnel @ 20 g/l of water), T3 (garlic extract @ 3 ml/l of water), T4 (Spinosad 45 SC @ 0.5 ml/l of water), T5 (Ripcord 10 EC @ 1 ml/l of water), T6 (Voliam Flexi 300 SC @ 0.5 ml/l of water) and T7 (Untreated Control). With three replications, the experiment was set up in a Randomized Complete Block Design (RCBD). To combat the fruit borer, all of the treatments were used on tomatoes at various phases of growth. T5 produced the healthiest fruit (28.91, 55.67, and 44.95) at the early, mid, and late fruiting stages, as well as the largest single fruit weight (161.60 g). At the same time, the T5 treatment had the lowest mean fruit infestation percentage (2.03 percent). T4 generated the healthiest fruits (25. 21, 53. 12, and 37. 92) among the biopesticides in terms of early, mid, and late fruiting stages, with a single fruit weight of 138.83 g. Treatment T7 had the smallest number and weight of healthy fruit, as well as the highest percentage of fruit infestation. As a result, when compared to the other treatments, T5 performed the best among chemical pesticides and T4 sowed the best performance among biopesticides against tomato fruit borer.