What is the usual order for tank mixing pesticides?

• A. Fill tank ⅕ to ½ full with carrier, add compatibility agent if needed, add suspension products, add solution products, add surfactants if needed, add emulsion products
• B. Add all products first then fill with water
• C. Fill tank fully, then add emulsion products
• D. Add water only after all products have been added

Answer: (A)

Mixing order matters to keep things compatible and to make sure every product dissolves or disperses properly. Start by filling the tank about a quarter to half full with clean water. This creates space for thorough mixing and helps prevent spills. If the label calls for a compatibility agent, add it now so it can interact with all components and reduce the chance of incompatibilities.

Next, introduce the suspension or dry formulations first. These take longer to wet and disperse, so adding them early with continuous agitation helps them break up and distribute evenly rather than forming clumps that clog the system. Once those are well dispersed, add the solution products, which dissolve readily in water and will mix smoothly into a well-mixed tank.

Then add any surfactants or other adjuvants to improve spread, sticking, or penetration, but after the main products are already in solution to avoid interfering with dissolution or causing unnecessary foaming. Finally, include the emulsion products last. They can emulsify or separate more easily if added earlier, so keeping them for the end helps maintain overall mixture stability.

After all components are in, fill to the desired volume with water and continue to agitate thoroughly. Always follow the product labels, but this sequence supports good dispersion, compatibility, and effectiveness.