There are lots of interesting agriculture use case being enabled by drones. "Ground" robots are still too expensive and unreliable, so they are not widely used yet. On the other hand, there are estimates claiming that 5-10% of farmers are using drones[1]. In addition to providing analytics, some drones already perform active tasks. E.g. take a look at spraying drone from DJI[2]. As another example, there is a startup that produces a drone that shoots weed in your field with the laser ;).
Shameless plug: I am a co-founder of the startup working on deep learning from drone imagery - http://tensorflight.com. We primarily work with agriculture. Please get in touch!
1. http://bestdroneforthejob.com/drone-buying-guides/agricultur...
2. https://www.dji.com/mg-1
Shameless plug: I am a co-founder of the startup working on deep learning from drone imagery - http://tensorflight.com. We primarily work with agriculture. Please get in touch!