What is a good rule of thumb for mixing small amounts of spray?

A good rule of thumb for mixing small amounts of spray is to use 1 tablespoon of wettable powder per gallon for each pound recommended. This method provides a straightforward approach that helps applicators achieve the correct concentration of pesticide when scaling down larger mixing instructions. Wettable powders often have specific application rates that are based on the amount used per gallon of water. By using 1 tablespoon per gallon for every pound suggested, you allow for easy conversion and application in smaller quantities, ensuring effective pest control while minimizing waste.

In contrast, other choices include less precise methods that may not adhere to best practices for pesticide application or proper mixing. For example, using 2 tablespoons for each gallon without reference to the recommended rate can lead to overdosing and potential harm to plants and the environment. Mixing equal parts of water and pesticide also lacks accuracy, as it could result in a concentration that is too strong or too weak. Lastly, while using a measuring cup for precision is generally wise, it does not provide the context of following specific recommendations for wettable powders, which is essential for effective pest management.