What conditions may make early morning or evening a good time for application?

Early morning or evening can be ideal times for pesticide application primarily because wind speed tends to be lower and humidity often is higher during these periods. Lower wind speeds reduce the risk of drift, meaning that the pesticide will more likely stay targeted on the intended application area rather than being carried away by gusts of wind. This can lead to more effective pest control and reduces the potential for unintended exposure to non-target areas or organisms.

Moreover, higher humidity can enhance the efficacy of certain pesticide formulations. Many pesticides are designed to work best when the air is more humid, as this can help to prolong the effectiveness of the active ingredients. High humidity can also reduce evaporation rates, ensuring that the product remains active on the surface for a longer period of time, which increases the likelihood of pest contact.

In contrast, the other options do not accurately capture the benefits associated with these times of day. For example, having both wind speed and humidity low may not provide optimum conditions for application. Ideal application times consider the balance of these environmental factors to achieve the best control outcomes.