Farmers in the Yunnan province in northwest China have substituted helicopters for jets to spray crops , speeding up the crop - ripening process . Ma said he has faith in UAVs, and feels that they provide a very cost-effective service. The adoption of unmanned aerial vehicles ( UAVs ) , from companies such as Xaircraft , marks a transition from traditional agricultural processes .
Farmers in the Yunnan province in northwest China have substituted helicopters for jets to spray crops , speeding up the crop - ripening process . The adoption of unmanned aerial vehicles ( UAVs ) , from companies such as Xaircraft , marks a transition from traditional agricultural processes .