Vol. 12, Issue 6 (2023)

Author(s):
Shashank Gopal Naik and Ashwani Kumar

Abstract:
A field study was conducted at Naini, Prayagraj during the rabi season 2022-23 at Central Research Farm, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj (U.P). Different chemicals and biopesticides such as Thiodicarb 75 WP, Flubendiamide 480 SC, Emamectin benzoate 5 SG, Spinosad 45 SC, Metarhizium anisopliae 1x10⁸ CFU/gm, Beauveria bassiana 1% WP and Neem oil 5% were tested against brinjal shoot and fruit borer. During the investigation, it was revealed that lowest shoot infestation was observed in the treatment T₄ Spinosad 45 SC (10.03%) followed by T₂ Flubendiamide 480 SC (12.71%), T₃ Emamectin benzoate 5 SG (14.34%), T₁ Thiodicarb 75 WP (15.05%), T₆ Beauveria bassiana 1%WP (16.24%), T₅ Metarhizium anisopliae 1x10⁸ CFU/gm (17.07%) and T₇ Neem oil 5% (18.08%). Also, in fruit infestation T₄ Spinosad 45 SC (12.03%) shows lowest infestation followed by T₂ Flubendiamide 480 SC (13.54%) and highest yield over control was observed in the treatment spraying of T₄ Spinosad 45 SC (221.95 q/ha) followed by the treatment spraying of T₂ Flubendiamide 480 SC (198.15 q/ha). Among biopesticides Beauveria bassiana 1% WP and Metarhizium anisopliae 1x10⁸ CFU/gm shown promise in managing brinjal shoot and fruit borer. Among all the treatments Spinosad 45 SC was the most economical treatment and recorded highest cost benefit ratio (1:6.33) followed by Flubendiamide 480 SC (1:5.56), Emamectin benzoate 5 SG (1:5.23), Thiodicarb 75 WP (1:4.75), Beauveria bassiana 1% WP (1:4.31), Metarhizium anisopliae 1x10⁸ CFU/gm (1:3.82), and Neem oil 5% (1:2.39) as compared to untreated control plot (1:1.74).