MDARD Michigan Core Pesticide Applicator Practice Exam

What can influence the decision to use a specific mixing order when tank mixing?

1. The size of the spray tank

2. The type of pesticides being mixed

3. The weather conditions

4. The time of day when mixing

The correct answer is: The type of pesticides being mixed

The decision to use a specific mixing order when tank mixing is primarily influenced by the type of pesticides being mixed. Different pesticide formulations can have varying chemical properties, which affect how they interact with each other when combined in a spray tank. Some pesticides may require a specific order of addition to ensure they mix thoroughly and remain stable, preventing issues such as clumping or precipitation. For instance, certain products may need to be added first to allow for proper suspension in the tank, while others may need to be added later to avoid reactions that could reduce efficacy or cause phytotoxicity. Understanding the compatibility of the products, their solubility, and their inherent properties is crucial for successful tank mixing. Therefore, the type of pesticides, including their formulations and intended purposes, plays a vital role in establishing the correct mixing order to achieve the desired results effectively and safely.