Drones are used in agriculture for various purposes such as:

1. Crop monitoring: drones equipped with cameras can provide high-resolution images of crops, which can be used to detect issues like disease, pest infestation, and soil erosion.
2. Crop spraying: drones equipped with spray systems can be used to efficiently apply pesticides and fertilizers over large areas of crops.
3. Field mapping: drones can be used to map fields, creating 3D models of crops, which can be used to plan the best use of resources, improve crop yields, and monitor crop growth.
4. Livestock monitoring: drones equipped with thermal cameras can be used to monitor the health and behavior of livestock.
5. Irrigation management: drones can be used to inspect irrigation systems and identify areas that need repair or improvement.

These are some of the ways in which drones are used in agriculture to improve crop yields, reduce waste, and increase efficiency.