Biodiversity of Natural Enemies in Paddy Ecosystem and their Seasonal Dominance

The most common and dominant predators observed were spiders, coccinellids, staphyllinids, mirids, damsel flies and dragon flies. The results revealed that maximum population (no. per 10 hills) of spiders (3.00), coccinellids (2.50), staphyllinids (2.50), mirid (2.25), damsel flies (0.75) and dragon flies (0.75) was found in 2^nd week of August followed by 3^rd week, while the lowest population of spiders (1.25), coccinellids (1.50), staphyllinids (1.00), mirid (1.25), damsel flies (0.25) and dragon flies (0.50) was observed in 3^rd week of October followed by 2^nd week of same month. Similarly, the egg parasitoids had greater impact on the suppression of rice stem borer and the most important egg parasitoids observed were Telenomus sp. and Tetrastichus schoenobii parasitizing up to 78.4 and 95.8 of October (95.8%) followed by 3^rd week (90.9%), while lowest egg parasitization was found in 1^st week of August (6.4%) followed by 2^nd week (7.5%).