Species diversity of natural enemy association on rice at two different locations

The experiments were conducted to compare the species diversity and abundance of natural enemies on rice by using light trap, pitfall traps, yellow pan traps and yellow sticky traps at Nyaungbingyisu (Nay Pyi Taw Council Area) and Hmawbi from February to June 2014. Forty-four species from 7 orders of natural enemy were recorded from Nyaungbingyisu and 45 species from 7 orders of natural enemy were recorded from Hmawbi. Species abundance and species evenness were calculated by Shannon-Wiener formula. At Nyaungbingyisu, the species index of natural enemies in vegetative stage, reproductive stage and ripening stage were 2.94, 3.19 and 3.7, respectively. The equitability was 0.53, 0.58 and 0.67, respectively. At Hmawbi, the species index of natural enemies in vegetative stage, reproductive stage and ripening stage were 2.05, 2.46 and 4.04, respectively. The equitability of natural enemies in vegetative stage, reproductive stage and ripening stage were 0.36, 0.43 and 0.71, respectively. At Nyaungbingyisu, natural enemy family of Miridae was the highest populations in vegetative stage. The highest mean population number was observed in family Hydrophilidae in reproductive stage and Family Formicidae in ripening stage. At Hmawbi, natural enemy family of Formicidae had greater population number in all stages