การจัดการระบบนิเวศน์เพื่อลดการระบาดของแมลงศัตรูข้าว

Abstract

Ecological Engineering is a new method for reduce rice insect pests outbreaks by planted a flora crops which have yellow or white flower, high nectar, food source and attract benefit insects into rice field for control rice insect pests. Experiment site set at Chainat rice research center in 2010 having two treatments: ecological engineering site (growing flora on the rice bund) versus control site (no flora on the rice bund). In E-E site growing four flora crop were Tridax procumbens, Wedelia chinensis, Gourd (Luffa spp.) and Pumpkin (Cucurbita spp.). We collected the number of pests and natural enemies found that E-E site had the number of pests and natural enemies more than control site in all sampling methods. The most of pests, predators and parasitoids was Nilaparvata lugens, Cyrtorhinus lividipennis and Anagrus optabilis and its can move to rice field in far from the rice bund. Because of brown planthopper strongly outbreaks in both site, E-E site can harvested about 50 % of area but control can not harvest. Therefore, E-E method can reduced pests outbreaks.