Seasonal abundance of brown plant hopper, Nilaparvata lugens (Stal) in basmati rice and correlation of abiotic factors under Meerut region

Abstract

The research was conducted at Crop Research Centre of Sardar Vallabhbhai Patel university of Agriculture and technology Meerut, During the Kharif season of 2018. The data revealed that Brown plant hopper (BPH) population was low from 31 to 35th SMW and ranged between 0.78 to 4.64 BPH per hill where as maximum population was recorded 15.87 BPH per hill in the 38th Standard Week with minimum temperature of 21.9 0C, Maximum temperature 35.1 0C, Min. R.H. 55.8%, Max. R.H. 93.2% and rainfall 13.0 mm. Mean population of BPH expressed positive correlation with minimum temperature (+0.019), maximum temperature (+0.117), minimum R.H. (+0.293), maximum R.H. (+0.165) and negatively correlate with rainfall (-0.245).