Effect of certain insecticide on natural enemies of rice stem borer, Scirpophaga incertulas (walker) on rice, Oryza sativa L.
Sharanappa, Ashwani Kumar, Ramkinkar Sahu and Hadi Husain Khan
An experiment was conducted during Kharif season in 2015 at the Agricultural Research Farm, SHUATS, Allahabad to observe the effect of four applications of seven insecticides viz: Monocrotophos 36%SL, Chlorpyriphos 20%SP, Flubendiamide 20%WG, Cartap hydrochloride 50%SP, Fipronil 5%SC, Imidacloprid 17.8%WP, Acephate 75 %SP on natural enemies of insect pests in rice field under agro-climatic condition of Allahabad. Results revealed that all the treatments were effective significantly to suppress the population of Coccinellids as compared with control (1.32 Coccinellids/hill). The treatment Monocrotophos recorded lowest population of Coccinellids with (0.63 Coccinellids/hill) and found to be superior among all other treatments. This was followed by Acephate (0.69 Coccinellids /hill), Flubendiamide (0.74 Coccinellids/hill), Cartap hydrochloride (0.74 Coccinellids/hill), Fipronil (0.82 Coccinellids/hill), Chlorpyriphos (0.85 Coccinellids/hill) and Imidacloprid (0.93 Coccinellids/hill) respectively.