Abstract:The present investigation entitled “Comparative efficacy of certain chemicals and bio-pesticides against diamondback moth (
Plutella xylostella L
.) on cabbage (
Brassica oleracea L
.)
” cultivar i.e., “Pride of India” was conducted during
rabi season November 2021 to March 2022 at Central Research Field, SHUATS. Prayagraj. The Eight treatments, Spinosad 45 SC (0.5ml/lit), Indoxacarb 14.5 SC (1ml/lit) and Emamectin benzoate 5% SG (0.4gm/lit),
Bacillus thuringiensis var. kurstaki 0.5% WP (2gm/lit),
Beauveria bassiana 1.15% WP (4gm/lit), NSKE 5% (50gm/lit), Neem oil 1% (10 ml/lit) and untreated control were used against (
Plutella xylostella) on three replications in randomized block design.
The larval population mean of diamondback moth (Plutella xylostella) on cabbage damage population revealed that the larval population of (T3) Spinosad 45 SC recorded lowest population mean of diamondback moth population i.e. (2.74) which was significantly superior over control followed by (T1) Indoxacarb 14.5% (3.04) and (T2) Emamectin benzoate 5% SG (3.25), (T5) Bacillus thuringiensis (3.41), (T4) Beauveria bassiana (3.57), (T7) Neem oil 1% (3.73) and (T6) NSKE 5% (3.92) was least effective among all the treatments respectively. The highest yield was recorded in Spinosad 45 SC (217.81 q/ha), followed by Indoxacarb 14.5%SC (180.21 q/ha), Emamectin benzoate 5% SG (165.30 q/ha), Bacillus thuringiensis (155.82 q/ha), Beauveria bassiana (148.51 q/ha), Neem oil 1% (142.00 q/ha) and NSKE 5% (125.35 q/ha) as compared to untreated check (67.55 q/ha).