Field Efficacy of Some Insecticides and Neem Products against Tomato Fruit Borer [Helicoverpa armigera (Hubner)] in Tomato
Adunoori Jyothi *
Department of Entomology, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, India.
Anoorag R. Tayde
Department of Entomology, Faculty of Agriculture, Naini Agricultural Institute, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj – 211007, Uttar Pradesh, India.
*Author to whom correspondence should be addressed.
Abstract
The field trial was conducted at Central Research Farm, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, Uttarpradesh during Rabi, 2021-2022. The experiment was laid out in RBD (Randomized Block Design). Seven treatments were replicated thrice: Neem oil, NSKE (Neem Seed Kernal Extract) 2%, Flubendiamide 480 SG, Novaluron 10% EC, lndoxacarb 14.5% SC, Emamectin benzoate 5%SG, Spinosad 45% SC and untreated Control. The treatments were tested to compare their efficacy against Helicoverpa armigera and their influences on the yield of tomatoes. Out of all treatments lndoxacarb 14.5% SC, Spinosad 45% SC, Flubendiamide 480SG and Novaluron10% EC recorded the minimum fruit infestation by 10.24, 11.31, 12.21 and 13.21 percent respectively. The highest yield was noticed in lndoxacarb14.5% SC (212.5 q/ha), followed by Spinosad 45% SC (200 q/ha) and Flubendiamide 480 SC (187.5 q/h). The best and most economical treatment is lndoxacarb (1:8.75), followed by Spinosad (1:8.16), Flubendiamide (1:7.55), Novaluron (1:6.38), Emamectin benzoate (1:5.86), Neem oil (1:5.64), NSKE (1:4.63), as compared to control T0-control (1:4.25) having the lowest B: C ratio.
Keywords: Helicoverpa armigera, tomato, indoxacarb, neem products, insecticides, cost-benefit ratio