Efficacy of different insecticides against the yellow stem borer (Scirpophaga incertulus Walker) (Lepidoptera: Crambidae) in spring rice cultivation oleh Shambhu Katel, Baibhav Sharma Lamshal, Shubh Pravat Singh Yadav, Sandipa Timsina, Honey Raj Mandal, Sujata Kattel, Shreya Adhikari, Nirmal Adhikari