Which of the following is NOT a requirement when using aquatic herbicides?

Ignoring weather conditions is not a requirement when using aquatic herbicides because it overlooks critical factors that can significantly affect the effectiveness of the herbicide and the safety of its application. Weather conditions can influence the spread and absorption of herbicides, as well as their potential impact on non-target species and adjacent environments.

It's essential to consider wind speed, precipitation, and temperature when planning an application. For example, applying herbicides during high winds can lead to drift, where the chemical unintentionally affects areas outside the targeted zone. Additionally, rain shortly after application might wash away the product before it can take effect.

In contrast, ensuring appropriate temperature conditions, using labels for application rates, and storing chemicals in safe locations are all vital practices that contribute to effective and responsible use of aquatic herbicides. Each of these requirements helps to maximize effectiveness while minimizing risks to the environment, aquatic life, and human health.