Meet Parrot Sequoia: a sensor that captures visible and invisible images, allowing you to monitor the health of your crops. It captures Green, Red, Red-Edge and Near Infrared to help you better monitor your plants. The device is easy to install on the drone of your choosing (e.g. SenseFly eBee).
The Sequoia lets you detect water and fertilization issues to protect your crops. You can find out more about it here.