Report of Using Unmanned Aerial Vehicle to Release Trichogramma

To improve the traditional artificial approach of releasing Trichogramma,increase the efficacy and solve the problems of releasing Trichogramma especially for the high haulm crops,the possibility of releasing Trichogramma by unmanned aerial vehicle(UAV) was explored by screening solute of Trichogramma suspension,comparing effects of soaking Trichogramma in suspension on adult emergence rate of Trichogramma,and studing the suspension proportion perching on the plants and the adult emergence rate of Trichogramma while releasing Trichogramma by UAV in this study.The result indicated that solute A was the ideal solute for Trichogramma suspension.The Trichogramma could suspend in 1.5‰ A solution evenly for 2 hours.The adult emergence rate of Trichogramma was not affected by the soaking time within 90 minutes.The percentage of Trichogramma suspension perching on the plants was 87.61% when using UAV to release the Trichogramma suspension to the farmland.There was no significant effect on the emergence rate when the Trichogramma suspension pressed by the peristaltic pump.To conclude,it was feasible to use UAV to release Trichogramma and it was more effective when releasing compared with the traditional approach.This study initiated the UAV releasing Trichogramma in China and had great economic and environmental benefit.