Spray droplets must wet foliage, spread evenly, and be absorbed before drying to effectively deliver pesticides, but large droplets often run off or fall off leaves. The document recommends using AASRA, a wetting agent and surfactant, which increases how much spray fluid spreads across plant canopies, promotes rapid uptake of agrochemical solutions, helps pesticides adhere to hairy or waxy leaves, enlarges chemical coverage area to better expose sucking pests, and allows for reduced spray volumes while enhancing pest control, especially in areas with intermittent rain.