Annals of Plant Protection Sciences

On the basis of population count and severity of infestation, budfly was recorded as a major pest and others such as leaf miner, semilooper, gram pod borer and Bihar hairy caterpillar were recorded as the minor pests. Simple correlation studies were carried out to correlate the effects of meteorological variables revealed that the maximum temperature had positive correlation with build up of the pest population, while the temperature, relative humidity and rainfall had negative correlation with gram pod borer. Efficacy of various botanicals were tested against linseed budfly during rabi 2004–2005. Based on budfly infestation and % reduction of bud infestation, foliar spray of oxydemeton methyl @ 0.025% was found most effective with the highest yield (17.13 q/ha) and cost benefit ratio (1:18:70) with maximum net return of Rs. 8512/ha due to lower cost and highest yield/ha followed by karanj seed kernel extract @ 3%. The efficacy of different treatments was found as oxy-demeton methyl (0.025%) > imidacloprid (0.002%) > karanj seed kernel extract (3%)> nimbicidine (0.2%) >garlic extract (5%) > NSKE (5%) > Lantana leaf extract (5%), respectively.