Abundance of Major Insect Pests in Rice and Their Relation to Weather Parameters

The present investigation has been conducted in rice crop during Kharif 2021-22at Students’ Instructional Farm of Acharya Narendra Deva University Agriculture and Technology, Kumarganj, Ayodhya (U.P.), India. population six major insect pests was recorded viz. Rice Yellow stem borer (Scirpophaga incertulus), Leaf folder (Cnapholocrocis medinalis), ear head bug (Leptocorisa acuta), Brown plant hopper (Nilaparvata lugens), White backed (Sogatella furcifera)and Green leaf (Nephotettix nigropictus) that cause most damage at different growth stages initiated after sowing till harvesting. maximum yellow stemborer observed on 36th SMW (12.20 per cent dead heart). infestation heart non-significant positively correlated with minimum, temperature RH% (0.433, 0.010 & 0.253 respectively) negatively rain fall (0.081) whereas, significant sunshine (0.552*). white 40th (16.80 cent). negative correlation (-0.062, -0.167) positive RH (0.244 0.173) (0.703*). Maximum 35th (16.35 minimum (0.427 0.505) temperature, rainfall (-0.079, -0.030 -0.291). 38th i.e., (10.90 bug/hill respectively.). RH, (0.061, 0.176, 0.155 0.210) (-0.407). peak mean BPH 37th (11.25 brown hopper/hill respectively.) Itwas (0.463 0.357) (-0.066 -0.088) (-0.597*), WBPH (12.80 It (0.300, 0.337 0.185) (-0.300) (-0.094*) the green (10.80 hopperwas (0.479 0.369) (-0.077 -0.120) (-0.633*).