Foliar spraying of plants, such as in agriculture, over large areas cannot be practically done by hand. Instead equipment that carries out the foliar spraying is used. This equipment can be expensive to operate and adjust, the latter of which might be necessary as the plants grow or as the species of plant changes due to crop rotation. The use of drones to carry out the foliar spraying reduces cost and provides greater flexibility. Gas, such as CO2 or ammonia, is infused into water and the gas-infused water is loaded into a tank carried by the drone. The drone flies to a pre-programmed area of plants and foliar sprays the plants, then returns to be refilled with more gas-infused water.
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