Management of Sal seed and seedling borer - Pammene theristis Meyrick (Lepidoptera: Tortricidae) by using systemic and contact insecticides

Pammene theristis Meyrick (Lepidoptera: Tortricidae) is a major sal seed and seedling borer closely associated with the dying off of new sal generation. The experiments were carried out in Thano and Timli forest ranges of Dehradun Forest Division, Uttarakhand to evaluate efficacy of systematic and contact insecticides against Pammene theristis Meyrick. The maximum percentage of control of the sal seedling borer was obtained by dimethoate (56.47%) at optimum concentration of 0.04% concentration followed by monocrotophos and imidacloprid at the same concentration. Contact insecticide, chloropyriphos used as a prophylactic treatment at optimum concentration of 0.04% concentration followed by cypermethrin and deltamethrin at the same concentration. The gave 34.12% control larval mortality was found to be highly significant (p < 0.001) among all treatments when compared with control.