Before tank-mixing pesticides with adjuvants or other products, what should be checked?

• A. Color of the label
• B. Price and availability
• C. Label compatibility, tank-mix restrictions, potential phytotoxicity, and order of operations as specified
• D. Manufacturer's country of origin

Answer: (C)

The main idea is to always verify what the label allows and requires before combining pesticides with adjuvants or other products. The label provides the exact compatibility information, any tank-mix restrictions, any risks of phytotoxicity to specific crops or growth stages, and the prescribed order of operations for adding components to the spray tank. Following these guidelines prevents incompatible combinations from reducing product efficacy, injuring the crop, or violating label directions. If a mix isn’t clearly supported on the label, a jar test or consulting the label or manufacturer is wise before mixing large quantities.

Color of the label, price and availability, or the country of origin don’t inform whether a tank mix is safe or permitted, so they don’t address the practical safety and effectiveness concerns involved in tank mixing.