Field Efficacy of Biopesticides against Diamondback Moth and Aphids on Cabbage

Results of field evaluation of biopesticides against diamondback moth (Plutella xylostella) and aphids (Brevicornye brassicae and Lipaphis erysimi) on cabbage during rabi seasons 2016–17 and 2017–18 are reported. The experiments were laid out in randomized complete block design (RCBD) with seven treatments and an untreated control each in three replications. Nimbicidine resulted in the highest mean per cent reduction (53.33, 49.71) over control (PROC) after first and second spray against diamondback moth during 2016–17 followed by neemban (46.31, 41.13), Beauveria bassiana (33.36, 35.12), Metarhizium anisopliae (30.50, 26.33) and Verticillium lecanii (26.07, 19.21). Nimbicidine resulted in the highest mean PROC of (60.19, 63.45) after first and second spray against aphids during 2016–17, followed by neemban (54.90, 57.33), V. lecanii (45.87, 50.41), B. bassiana (37.83, 42.67) and M. anisopliae (32.96, 40.49).