Herein provided is an autonomous unmanned ground vehicle (AUGV) and handheld device for pest control. The AUGV comprises a chassis with a drive mechanism to displace the AUGV among a plurality of plants comprising at least one weed； an image- capture device to obtain images of the plurality of plants； a motorized arm with a free end displaceable with respect to the chassis； a microwave emitter mounted to the free end, displaceable therewith, and operable to emit microwaves； and a control system to operate at AUGV. The control system comprises a processing unit； and a memory having stored thereon instructions to cause the AUGV to perform: independently navigating the chassis among the plurality of plants； identifying the at least one weed in the images； displacing the motorized arm to position the free end in proximity to the at least one weed； and emitting microwaves toward the at least one weed.
