RELATIVE EFFICACY OF NEWER INSECTICIDES AGAINST LINSEED BUD FLY, DASYNEURA LINI BARNES.

Abstract

Bio-efficacy of eight newer insecticides including untreated control was conducted in the field in variety Neelum against linseed bud fly (Dasyneura lini) during rabi 2010-2011. In this trail two spray of Imidacloprid at 45 and 60 days after sowing exhibited least bud infestation fallowed by Spinosad treated plot found best in reducing bud infestation (7.25 per cent and 7.81 per cent respectively compared to 27.75 per cent in control). The significantly higher yield and per cent increased in yield over control was obtained in treated plot Spinosad and Imidacloprid (17.77 q/ha^-1 with increase yield 37.47 per cent and 16.66 q/ha^-1 with increase yield 33.31 per cent respectively compared to 11.11 q/ha^-1 yield in control) and highest C: B ratio was received in treated plot Imidacloprid fallowed by Spinosad (1:29.52 and 1:14.64).