In the eight-step mixing sequence, which step may vary and require checking the product label?

• A. Fill tank 1/4 to 1/2 full with carrier
• B. Begin agitation
• C. Add spray modifiers (if needed)
• D. Finish filling the tank with carrier

Answer: (C)

The step that may vary and require checking the product label is adding spray modifiers (if needed). Modifiers like spreaders, stickers, or drift control agents are not universally required; the label for each product specifies whether a modifier is needed, the exact amount, and when to add it in the mixing sequence. Some products require adding the modifier before other components, some after dilution, and some not at all. Following the label ensures compatibility with the pesticide and carrier, maintains spray performance, and helps prevent problems like incompatibility, precipitation, reduced efficacy, or crop injury. The other steps—putting carrier in the tank, starting agitation, and finishing filling—are standard procedures that don’t typically hinge on product-specific modifier requirements.