author(s)
J Mary Lisha, V Baskaran, S Vijay and M Vishnu

abstract
Rice is the one of most important cereal food crops in India. In this view, CR Dhan 200, CR Dhan 201, CR Dhan 202, CR Dhan 203, CR Dhan 204, CR Dhan 205, CR Dhan 206, CR Dhan 207, CR Dhan 209 rice varieties were sown in experimental plots of Faculty of Agriculture, Annamalai University, Chidambaram. The experiment was laid out in Randomized block design with three replications. In India rice was mainly grown by direct-seeded and transplanted rice. To monitor the pest population by using net sweeping and method was used. The results showed that the vegetative stage maximum number of yellow stem borer was observed in the transplanted rice variety of CR Dhan 209 (5.00) and leaf folder population was maximum in transplanted rice variety of CR Dhan 204 (6.00). The peak population of the grasshopper was observed in the direct and transplanted rice variety of CR Dhan 204 (6.66) and green leafhopper was recorded in the maximum number of population in the transplanted rice variety of CR Dhan 204 (6.66). It’s evident from the data reproductive stage that the population of the grasshopper was the maximum number observed in the direct-seeded rice variety of CR Dhan 200 (11.33). The highest number of plant bug population was recorded in the transplanted rice variety of CR Dhan 204 (7.00). The peak population of Green leafhopper was recorded in the direct-seeded rice variety of CR Dhan 204 (8.00), whereas the maximum number of plant bugs was recorded in the direct-seeded rice variety of CR Dhan 204 (15.00). In the ripening stage, the appearance of stem borer adult was the maximum number observed in the transplanted rice variety of CR Dhan 209 (7.33). The peak population of the leaf folder was recorded in the direct-seeded rice variety of CR Dhan 203 (7.33). The lowest number of green leafhopper population was recorded in the transplanted rice variety of CR Dhan 204 (0.33). The highest number of plant bug population was recorded in the variety of CR Dhan 200 (11.00). The peak population of the grasshopper was recorded in the variety of CR Dhan 209 (10.66). In the population of pollenfeeder was the maximum number observed in the direct-seeded rice variety of CR Dhan 209 (11.00).