MDARD Michigan Core Pesticide Applicator Practice Exam

What is hydrolysis in the context of pesticide degradation?

1. A reaction that adds heat to pesticides

2. A reaction that splits chemical bonds with water

3. A reaction that enhances pesticide effectiveness

4. A reaction that solidifies liquid pesticides

The correct answer is: A reaction that splits chemical bonds with water

Hydrolysis in the context of pesticide degradation refers specifically to a chemical reaction that involves the splitting of chemical bonds in a pesticide compound through the action of water. Water molecules participate in the reaction, breaking bonds and resulting in the transformation or breakdown of the pesticide into different chemical compounds. This process is crucial in assessing the persistence and environmental fate of pesticides, as it helps determine how quickly a pesticide will degrade in the presence of moisture commonly found in soil and water. Understanding hydrolysis is important for pesticide applicators because it directly affects how long a pesticide remains active in the environment and its potential impact on non-target organisms. If hydrolysis occurs rapidly, it may lead to decreased effectiveness of the pesticide, but it also reduces the likelihood of residual harmful effects on the ecosystem.