The control effect of Anoplophora glabripennis with the liquid formulation of 14% Imidacloprid+DDVP for trunk injection

The field bioassays of 5 insecticides(14% Imidacloprid+DDVP,4.15% Imidacloprid+Abamectin,4.5% Imidacloprid,10% Acetamiprid and 30% DDVP+omethoate liquid formulation for trunk injection) were conducted against Anoplophora glabripennis.The results showed that 5 insecticides exhibited efficiency against the larvae,in which 14% Imidacloprid+DDVP exhibited highest efficiency.The control efficiency against larvae with the formulation of 14% Imidacloprid+DDVP reached 90.7% by using a dose of 1.0 mL for each trunk with a diameter of a centimeter,which was better than the control pesticide formulation of 30% DDVP +Omethoate.Three effective controlling strategies were carried out by the field bioassay according to different damage degrees.① Trunk injection was performed once during the period of pest larvae in the year while the population density reached 1.15 larvae per tree.② Trunk injection was performed twice during the periods of larvae in the year while the population density reached 5 larvae per tree.③ Trunk injection was performed three times during the periods of larvae in the year and next year while the population density reached 12 larvae per tree.The three control strategies were effective to control the pest with a result that dropped the pest population density under 0.15 larvae per tree.