author(s)
Gajendra Singh, AK Singh, SK Yadav, SK Giri and Kuldeep Verma

abstract
The present investigation was conducted to study the occurrence of major insect-pests of Indian mustard (Brassica juncea L.) during Rabi, 2016-2017 at major insect-pests from germination to pre-harvest stage of the crop at three farmers ‘fields. In the village Pithla, Shivnathpur and Jorium of Narendra University of Agriculture and Technology, Kumarganj Faizabad total of five insects namely mustard sawfly, mustard aphid, painted bug, cabbage butterfly and Coccinellids was found associated with mustard crop of these first were found as pests and the Coccinellids as the predator of aphids. The aphid population build up significant negative correlation with minimum temperature (-0.469*) and non-significant negative correlation with maximum temperature (-0.283) and sunshine hours (-0.098) while it showed significant positive correlation (0.079*) with RH.