Evaluation Of Synthetic Insecticides For The Control Of Maize Stem Borer, Chilo Partellus (Swinhoe) (Crambidae: Lepidoptera) In D. I. Khan, Khyber Pakhtunkhwa, Pakistan

Abstract

The present research was carried out at the farm of the faculty of agriculture, Gomal University, Dera Ismail Khan during the summer, 2021. The experiment was conducted for the management of C. partellus in maize crops under field and it was laid down in Randomized Complete Block Design with three replications. An experiment was conducted to evaluate the efficacy of different insecticides against maize stem borer. Six insecticides, viz. Emamectin benzoate 1.9 EC, Phorate 5G, Chlorpyrifos 40EC, Fipronil 3G, Lambda-cyhalothrin 2.5EC, and Carbofuran 3G were tested against the pest. The selected insecticides were applied to the crop twice during the whole cropping season. The results revealed that Carbofuran 3G and Emamectin benzoate 1.9EC were found effective against the maize stem borer and recorded minimum infestation of 6.56 and 7.33% after the first application and 5.09 and 6.41% infestation after the second application respectively. Similarly, in agronomic parameters, both Carbofuran 3G and Emamectin benzoate 1.9EC treatments produced the highest cobs per plant (1.57 and 1.43), grain yield (6113.3 and 6059.3 kg ha-1), 1000-grain weight (282.00 and 268.67gm), and grains per cob (400.53 and 396.40) respectively.