Drones are farmally known as unmanned aerial vehicle which is essentially a flying.In Current scenario it is also being used for surveillance,traffic monitoring,weather monitoring etc.Drones have already vastly altered the agricultural industry and will continue to grow in the coming years. Regulations around drone use need to be made and revised in many countries and more research needs to be done on their effectiveness at certain tasks.There are many ways drones can be useful to farmers but it is important to understand their limitations and functions before investing in expensive equipment.

Agriculture spraying drone can replace the traditional pesticide sprayer and it's speed is 40times of the traditional sprayer. It will save 90% water and 30%-40% pesticide. Small droplet diameter make the pesticide more well-distribute and improve the effect.

Sensors used in the agricultural drones are:

• Visual sensors
• Multispectral
• Thermal
• hyperspectral
• LIDA