The field trial was conducted in Central Research Farm (CRF) at SHUATS, Prayagraj, during Kharif-2021-22. The experiment was laid out in RBD (Randomized Block Design) and replicated thrice with seven treatments. Viz., T1 Indoxacarb 14.5%EC, T2 Flubendiamide 39.5%SC, T3 Emamectin benzoate 5%SG, T4 Bacillus thuringiensis 5% WP, T5 Spinosad 45% SC, T6 Neem oil 4%, T7 Chlorantraniliprole 18.5%SC, (T8) untreated Control was tested to compare the percent fruit infestation against Helicoverpa armigera and their influences on yield of Tomato. The lowest fruit infestation and best economical treatment were recorded in Spinosad 45 SC followed by Indoxacarb 14.5% SC, Chlorantraniliprole 18.5% SC, Emamectin benzoate 5% SG, Flubendiamide 39.5% SC, Bacillus thuringenesis 5% WP Neem oil 4% and as compared to control T8. The highest yield was obtained in Spinosad 45SC (260q/ha) followed by Indoxacarb 14.5%SC (245q/ha), Chlorantraniliprole 18.5% SC (225q/ha), Emamectin benzoate 5%SG (200q/ha) Flubendiamide 39.5% SC (185q/ha), Bacillus thuringenesis 5% WP (163q/ha) Neem oil 4% (149q/ha) and as compared to control T8 (80q/ha). After calculating the benefit-cost ratio of different treatments highest B: C ratio of different treatments was observed for Spinosad 45SC (1:8.8) followed by Indoxacarb 14.5% SC (1:8.3), Chlorantraniliprole18.5% SC (1:7.6), Neem oil (1:7.2), Emamectin benzoate 5% SG (1:6.8), Flubendiamide 39.5% SC (1:6.3), Bacillus thuringenesis (1:5.6), as compared to control T8 (1:2.8) having the lowest B: C ratio.
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