Comparative efficacy of chemicals with biopesticides against tomato fruit borer, Helicoverpa armigera (Hubner) on Tomato, Solanum lycopersicum (L.) under field conditions

Abstract

The present investigation entitled Comparative efficacy of chemicals with biopesticides against Tomato fruit borer, Helicoverpa armigera (hubner) on Tomato, Solanum lycopersicum (L.) under field conditions. cultivar i.e. Pusa Ruby was conducted during December to March 2019-20 at Central Research Farm, SHUATS, Naini, Prayagraj. The incidence of Helicoverpa armigera in tomato was starting from early stage of flowering till to the harvesting. The approaches for chemical management of tomato fruit borer were found effective than control. Two applications of seven insecticides viz; Neem oil @ 5%, Spinosad 45 SC @ 0.4%, Bacillus thuringiensis @ 5%, Neem seed kernel extract @ 5%, Flubendiamide 39.35 SC @ 0.2%, Chlorantraniliprole 18.5 SC @ 0.4%, and Nisco sixer plus @ 1% were evaluated against Tomato fruit borer, Helicoverpa armigera. Minimum percent of larval reduction and B:C ratio were observed in Spinosad (80.6 and 1:7.0) followed by Chlorantraniliprole (73.7 and 1:6.8) < Flubendamide (65.5 and 1:6.4) < Nisco sixer plus (63.3 and 1:5.9) < Neem oil (62.6 and 1:5.6) < Neem seed kernel extract (61.2 and 1:5.6).