Which of these factors would NOT affect the efficacy of pesticide application?

The efficacy of pesticide application depends on various environmental factors that can influence how well a pesticide works. Humidity plays a substantial role because it affects the evaporation rate of the pesticide; high humidity may enhance adhesion to surfaces, while low humidity could lead to faster evaporation and reduced effectiveness. Wind speed is crucial as well since strong winds can cause drift, resulting in the pesticide landing on unintended areas instead of the target pests. Temperature also influences pesticide performance; certain pesticides may be less effective or degrade quickly at extreme temperatures, whether too hot or too cold.

However, the color of the pesticide does not have a significant impact on its efficacy. While pigments may affect visual appeal or product branding, they do not influence how the pesticide interacts with pests or the environment in terms of its effectiveness in pest management. Thus, pesticide color is not a factor that affects the efficacy of its application.