Enhancing Okra Yield and Quality: Synergistic Impact of Biopesticides Combined with Cypermethrin against Shoot and Fruit Borer [Earias vittella Fab.]

The present investigation was conducted during Kharif 2018 at Central Research Farm, SHUATS, Naini, Prayagraj Seven different treatments viz., Neemoil (0.3%), NSKE (0.5 %), Beauveria bassiana, Bacillus thuringiensis, Cypermethrin 25 EC + Beauveria bassiana, Cypermethrin 25 EC + Neemoil (0.3 %) and Cypermethrin 25 % EC were evaluated against shoot and fruit borer, Earias vittella. Minimum per cent shoot infestation and fruit infestation were recorded in Cypermethrin 25% EC (check) with (3.51%, 4.66%) followed by Neemoil+ Cypermethrin (3.9%, 4.93%), Cypermethrin 25EC + Beauveria bassiana(5.17%, 5.49%), Neemoil (5.35%, 5.94%), NSKE (7.21%, 7.92%), Bacillus thuringiensis (7.52%, 8.90%),Beauveria bassiana(8.50%, 9.05%) and Control (11.77%, 14.65%) respectively. Among all the treatment studied, the best and most economical treatment was T6 - Cypermethrin 25EC (1:3.48), T7 - Cypermethrin 25EC + Neemoil (1:3.36), T5 - Cypermethrin 25CE + Beauveria bassiana(1:3.07), T1- Neemoil (1:2.91), T2- NSKE (1:2.79), T4- Bacillus thuringiensis (1:2.63), T3- Beauveria bassiana(1:2.21), Control (1:1.81) respectively.