What is the consequence of high solubility in pesticides?

High solubility in pesticides leads to an increased chance of runoff. This is due to the fact that highly soluble pesticides are more likely to dissolve in water and, as such, can be easily washed away from the application site during rainfall or irrigation. When these pesticides are transported with water, they can contaminate nearby water bodies, soil, and other non-target areas, creating environmental hazards and impacting local ecosystems.

In contrast, characteristics like increased shelf life, reduced effectiveness, and improved particle size typically do not correlate directly with high solubility. High solubility does not inherently improve the longevity of a pesticide's effectiveness over time (which relates more to chemical stability), nor does it generally lead to an improvement in the physical characteristics of the pesticide itself, such as particle size. Hence, the increased chance of runoff stands out as the primary consequence of high solubility among pesticides.