Effect of Green Tea Essence on Trapping Capability of Yellow Sticky Trap against Insect Pests in Tea Garden

Field experiment was carried out to evaluate the effect of green tea essence on trapping capability of yellow sticky trap against insect pests in tea garden in Jingtan county of Jiangsu province,and the number of insect pests per trap were investigated in 15 days. The result showed that whether green tea essence could improve the trapping capability of yellow sticky trap depended on the species of insect pests and the density of sticky trap. At the trapping density of one trap /16m2and 3 d after exposure,sticky traps combined with green tea essence B could capture more Empoasca vitis than sticky traps in absence of green tea essence,and at 7 or 15 d after exposure,both green tea essence A and B could improve the trapping capability of sticky trap. Whereas at the density of one trap /9m2or one trap /25m2,green tea essence did not improve the trapping capability of sticky trap against Empoasca vitis. Both tea essence A and B did not affect the trapping capability of sticky trap against other insects including lepiopteran pests,coleopteran pests and dipteran insects in tea garden. All these indicated that combination of green tea essence and sticky trap could be a practical method for improving the trapping capability of sticky trap against Empoasca vitis at the density of one trap /16m2in tea garden.