Which sprayer should you use if the pesticide is only available as a wettable powder and the target site has dense foliage?

Using a high-pressure sprayer is appropriate when dealing with wettable powders and dense foliage for several reasons. Wettable powders require thorough mixing with water to create a suspension that can effectively deliver the pesticide to the targeted pests. High pressure can help atomize the mixture more effectively, producing smaller droplets that can penetrate the dense foliage. This means that the pesticide can reach hidden pests that may be shielded by leaves and branches.

Additionally, higher pressure can assist in breaking up the wettable powder into finer particles, aiding in better coverage and distribution over the plant surfaces. Consequently, when applying pesticides in areas with thick plant growth, using a high-pressure sprayer improves the chances of achieving sufficient contact with the pests, ensuring effective pest control.

Using other types of sprayers may not provide the same level of penetration or coverage required in dense foliage situations, potentially leading to reduced efficacy of the pesticide application.