Efficacy of insecticides and some biopesticides against maize stem borer, Chilo partellus swinhoe

Experiment was conducted at intermediate zone of Jammu Division under RBD with three replications and twelve treatments in maize variety “Kanchan” sown at 60 × 20 cm spacing. Imidacloprid @ 4g a.i. kg⁻¹ seed treatment and thiomethoxam @ 1g a.i. kg⁻¹ were found to be at par while seed treatment alone with imidacloprid and thiomethoxam could reduce the infestation to an extent of 9.66 and 11.33%, with increase in grain yield. Carbofuran 3G @ 10 kg ha⁻¹ reduced the infestation to 12.50% while seed treatment with imidacloprid followed by carbofuran whorl treatment proved to be the most effective.