author(s)
Vinay Pradhan, GP Painkra, VK Sandilya and JK Sahu

abstract
The studies on Efficacy of Neem based plant products against linseed bud fly (Dasyneura lini Barnes) were conducted at Rajmohini Devi Collage of Agriculture and Research station, Ambikapur during Rabi seasons of 2017-18. Efficacy of some Neem based plant products viz., Neem leaf extract, Neem seed kernel extract, Neem seed extract and Nimazaal at different concentrations was determined against linseed bud fly (D. lini Barnes). The efficacy of different neem based formulation were tested against D. lini Barnes on linseed crop during 2017-18. viz. NSKE @ (5%). NSKE @ (3%), Nimazal @ (5%), NSE @ (5%), NSE @ (3%), NLE @ (5%), NLE @ (3%) and untreated control. Bud fly infestation ranged from 18.37 to 27.61 per cent in different neem based formulations. NSKE 5 per cent with bud infestation of 18.37 per cent was most effective against linseed bud fly. It was at par with Nimazal 5 per cent and NSKE 3 per cent having bud damage of 19.07 and 20.12 per cent, respectively, but differed significantly from Neem seed extract 5 and 3 per cent, and Neem leaf extract 5 and 3 per cent with 20.80, 22.41, 23.24, and 27.61 per cent bud infestation, respectively. Neem leaf extract 3 per cent with significantly highest bud damage of 27.61 per cent was least effective against bud fly among neem based formulations as against 33.07 per cent bud damage in untreated control.