author(s)
Surendra Singh and Bindu Kumari Singh

abstract
Survey was conducted on major insect pests incidence on BPT-5204 rice ecosystem which covered 70 % cultivated rice growing area in Phulwarisharif Block of Patna District of Bihar State, India. The present studies were done in kharif season (2013-14) of Phulwarisharif Block of Patna District. Major insect pests of rice were inducing major problem in rice production in Patna District. The survey was conducted at both vegetative and reproductive stages of paddy. Fortnightly observations of major insect pests were done in relation to population dynamics and percentage damage extents in different Plots at vegetative and reproductive phase of paddy. Fortnightly observation provides information about pest population in relation to metrological changes. The crop is infested by major insect pests which play a significant role in limiting BPT-5204 rice production