Which factor does not affect the efficacy of a pesticide?

The efficacy of a pesticide refers to its ability to effectively control pests. Various factors can influence this effectiveness, including weather conditions, application rate, and timing of application.

Weather conditions impact how well a pesticide can work, as factors like temperature, humidity, and wind can alter its distribution and absorption. The application rate is crucial because applying too little may not achieve control, while too much can lead to runoff or harm to non-target organisms. The timing of application is vital as it can determine whether the pesticide is effective when pests are most vulnerable.

In contrast, the color of the pesticide does not impact its efficacy. While the color may affect visibility or aesthetic preferences, it does not play a role in how the active ingredients function or interact with the target pests or the environment. Therefore, this factor is not significant in determining the effectiveness of a pesticide.