author(s)
BK Rautaray, S Bhattacharya, D Panigrahi, T Panda and SR Dash

abstract
The present study was conducted at Krishi Vigyan Kendra Jajpur, Odisha India, during Kharif 2015&16 with an objectives to study on the effect of planting dates on incidence of rice leaf folder Cnaphalocrocis medinalis G. and its impact on grain yield in rice crop. The data on leaf folder incidence was recorded in all two seasons trials, the experiments comprise of five dates of planting i.e. 1^st July., 15^th July, 1^st August,15^th August and 30^th August.in trial plots in KVK instructional farm in Randomized block design and it replicate four times with one common variety (MTU-7029). Data has been recorded on leaf folder incidence at 10 days interval from date of transplanting till Doughing stage and the grain yield at time of harvesting. It was evident from the data given in Table -3 that significant differences existed among transplanting dates pertaining to percentage of Leaf Folder Incidence (LFI). Rice crop transplanted late; 30^th August was heavily infested by leaf folders (15.42%), However minimum infestation by leaf folders was recorded (7.83%) in early transplanted crop i.e.1^st August The rice crop planted on 1^st July proved to be the best for obtaining maximum grain yield (42.37Qt/ha) and the lowest yield in late planted crop.