Virginia Commercial Pesticide Applicators CORE Exam

What is the first step in determining if two pesticides can be safely tank mixed?

1. Consult a pesticide manufacturer

2. Perform a field test with the mixture

3. Read the label of the pesticides

4. Mix them in a large container

The correct answer is: Read the label of the pesticides

Reading the label of the pesticides is indeed the first step in determining if two pesticides can be safely tank mixed. The label provides critical information about the compatibility of the products, including any specific instructions or restrictions regarding mixing with other pesticides. This includes guidance on what can be mixed together without causing adverse reactions, such as reduced efficacy or phytotoxicity to plants. The label will often include compatibility charts or statements addressing whether certain mixtures are recommended or prohibited. Understanding these details is essential to ensure safe and effective application, as well as compliance with legal regulations governing pesticide usage. Additionally, since the other options could lead to unsafe practices, they emphasize the importance of relying on information directly from the labels before attempting tank mixing, ensuring that any actions taken afterward are informed by the guidelines set forth by the manufacturers.