https://www.cnbc.com/2018/06/04/weed-killing-ai-robot.html

A slew of AI weed killers are on the horizon and have the potential to disrupt the multibillion dollar pesticides business. Among them is Swiss-company ecoRobotix and its weed-killing robot.

It's solar-powered and can kill weeds for 12 hours straight without an operator at the helm. Through artificial intelligence, cameras and two robotic arms, the table-looking robot sprays a dose of herbicide on weeds but not the crops. EcoRobotix uses 20 times less herbicide than traditional methods that spray entire fields.