Drone-aided spreading of agricultural chemicals; spreading of fertilizers; spreading of herbicides; agriculture and forestry and land irrigation services; Aerial surveying and precision crop monitoring of agriculture to determine their health by using drones and unmanned arial vehicles (UAVs) with sensors; Data collection and mapping of crops and vegetation through the use of drones and unmanned aerial vehicles (UAVs); Providing analysis and recommendations about herbicides and fertilizers using data collected from drones and unmanned aerial vehicles (UAVs)