The quantity of buffering agent needed to be used in a spray tank may be difficult to determine. Various buffering agents have different powers to buffer. In addition, merely measuring the pH of a spray solution may not give an indication of the quantify of buffering agent needed. However, sulfuric acid is a much stronger acid than is acetic acid and much more buffering agent would be needed to change the pH of a sulfuric acid solution verses an acetic acid solution. The use of compatibility agents may allow the use of two or more chemicals in a tank that would otherwise be incompatible.
Crop oils can be effective as penetrants and as surfactants.
These products can be effective as penetrants and as surfactants. Excessive foaming can be a significant problem with some agitation systems in sprayers and especially when the water level in a tank gets down so that a mechanical agitation system would be causing excessive foam. Since aerial applications normally are made with highly concentrated spray mixtures spray nozzles that create small droplets are often used. Extenders are adjuvants that can extend the useful life of a spray chemical. This can be accomplished by increasing the adhesion of the chemical to the leaf or by reducing any factor that can diminish chemical effectiveness or by enhancing the weatherability of the chemical.