Here is another robot that can save farmers a lot of time and money while protecting their plants. This solar powered Autonomous Robot Weeder from ecorobotix can precisely detect and spray weeds while using 20x less herbicide. It works for 12 hours a day without a human operator and can be controlled from a smartphone.
The robot has a detection accuracy of over 95%. It has a lightweight design and uses two robotic arms to apply herbicide. The machine uses solar panels, camera & machine vision, GPS navigation, and sensors to get the job done.