Vol. 11, Special Issue 1 (2022)

Author(s):
Mohammad Rizwan, SK Sachan, Mohammad Imran and Nazim Ali

Abstract:
The population buildup of rice leaf folder, C. medinalis was experimented during the Kharif, 2018 and 2019 at the CRC farm of Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut (U.P.). The infestation of leaf folder was recorded on variety Pusa Basmati-1 at weekly intervals from 32^ndstandard week and continued till the 42^nd standard week and 32^tnd standard week and continued till harvest of the crop and ranged from 1.14 to 12.20 percent leaf damage during Kharif 2018 and Kharif 2019, respectively. The infestation of leaf folder recorded as leaf damage ranged from 2.59 to 14.38 percent. The infestation reached its peak during 39^th standard week (last week of September) and the infestation of leaf folder ranged from 1.14 to 12.20 percent leaf damage. The infestation increased from 33^rd standard week and reached at maximum during 38^th standard week (fourth week of September) during Kharif 2018 and Kharif 2019, respectively.