Preliminary study on the effect of using unmanned aerial vehicles (UAVs) to control Spodoptera frugiperda
2021
Lu, Hui | Li, Fen | Zhu, Xiaoming | Tang, Jihong | Lyu, Baoqian | Wu, Shaoying
Spraying insecticides by unmanned aerial vehicle (UAV) is an effective method to prevent and control Spodoptera frugiperda. This study investigated the influences of different UAV types, spray adjuvants, spray times, maize growth periods, and insecticides on S. frugiperda in three cities, Hainan Province, China. The results showed that at least two times are needed to spray insecticides using UAVs when controlling the S. frugiperda. Both UAVs had a substantially higher control effect and lower cost than artificial spray methods. Oil spray adjuvant Refei was more suitable for both UAVs than Tiancheng to control pests. Chlorantraniliprole had the best control effect of up to 90%. The control effects at the seedling stage and small bell stage of S. frugiperda were 94.3% and 91.3%, respectively. Spraying at 7:00 am and 7:00 pm by UAV of T20 had good control effect on S. frugiperda in three cities.
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