Vol. 11, Special Issue 7 (2022)

Author(s):
Jannu Surendra Babu and Ashwani Kumar

Abstract:
The research work entitled “Efficacy of certain chemicals and biopesticides against maize stem borer, Chilo partellus (Swinhoe)” was undertaken at CRF, Prayagraj, Allahabad, Uttar Pradesh, of eight treatments viz., (T1) Neem oil, (T2) NSKE 5%, (T3) Beauveria bassiana, (T4) Cypermethrin 25 EC, (T5) Emamectin benzoate 5% SG, (T6) Carbofuran 3G, (T7) Spinosad 45% SC and (T0) Untreated control in RBD with three replications targeting to evaluate the Efficacy of chemicals and biopesticides on the larval population of maize stem borer, Data was taken on Maize Stem borer population. The larval population of Maize Stem borer (Chilo partellus) on third, seventh and fourteen days after spraying revealed that the treatment (T6) Carbofuran 3G (7.35) was found superior followed by (T5) Emamectin benzoate 5% SG (8.06), (T4) Cypermethrin 25 EC (9.17), (T7) Spinosad 45% SC (9.71), (T2) NSKE 5% (10.17), (T3) Beauveria bassiana, (10.84), and (T1) Neem oil 3% (11.07). When the cost benefit ratio was worked out, the results were quite interesting. Among the treatment studied, the best and most economical treatment was (T6) Carbofuran 3G (1:3.09) followed by (T5) Emamectin benzoate 5% SG (1: 2.93), (T4) Cypermethrin 25 EC (1: 2.78), (T7) Spinosad 45% SC (1: 2.31), (T2) NSKE 5% (1:2.39), (T3) Beauveria bassiana (1:2.31) and (T1) Neem oil 3% (1:2.12) as compared to (T0) Untreated control (1:2.01).