Insecticides, herbicides, fertilisers, and other chemicals are applied to plants using a knapsack power sprayer, also known as a backpack power sprayer. Agricultural and horticultural applications are the best fit for this machine. It runs on gasoline and can be carried on your back from one location to another or around farmland.https://perfecthouseltd.com/product-category/agricultural-equipment/knapsack-power-sprayer/