It should be doable to have a number of flying mirror platforms with scan and ID done centrally and once located kill pulses can be sent down. These kills could

It should be doable to have a number of flying mirror platforms with scan and ID done centrally and once located kill pulses can be sent down. These kills could come via another platform at another time once the weed location is known and memorised. It is even possible for a small fixed wing drone(with 10x the flight duration) to be used. The ID process is a light task and can be readily moved from field to field. The laser killer with the needed wattage can be trucked from field to field, and use a similar flying mirror set to aim/kill from the prelocated targets. From what I read about mosquito killing, the tech is capable AND plants are not even moving targets. That said, many moths and flying beetles are large targets and could be targeted and killed to deal with many pests.