Selection of chemical pesticide to minimize toxic effect to ladybird beetle [Coccinella septempunctata Linn (Coleoptera: Coccinellidae)] while managing black bean aphid [Aphis fabae Scop. (Hemiptera: Aphididae)]. Nepal Agric. Res. J. . 2023;15(1):33-45. doi:10.3126/narj.v15i1.51037