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- Get information from sources you trust, develop your plan, read the label carefully and then test. Precision Laboratories has a tank mix test kit ($9.95) for accurate mix evaluations of liquid and dry ingredients.
- Take your time when adding products, advises Eric Spandl, WinField. "Some products take time to get into suspension, especially early season with cool water," he says. "Put a product in the tank, then go check your email, have some coffee and then come back."
- Use the inductor as a funnel for individual products, not as a premixer, warns Jim Reiss, Precision Laboratories. "Dumping all the products together something that even pro product formulators cannot do."
- Start with water. "We used to say start with 20 percent water, but with some newer products, it should be something like 80 percent," advises Reiss. "More water helps."
Whether you use a Mason jar or pipette and an easily scaled container such as offered by Precision Laboratories, do a compatibility test for complex tank mixes. Follow prescribed mixing order with water to be used in application. Retain the test sample and recheck over a period of hours or even days to identify problems should spray solution be left over night or over a weekend.
Long past are the days of tossing in a little crop oil or surfactant in a spray mix. Selecting the right adjuvant is increasingly important today. However, complex herbicide mixes to fight resistant weeds make proper adjuvant selection a critical part of a successful crop protection program.
"We have more classes of chemistries with ever greater concern for deposition and reduced off-target drift," says Eric Spandl, technical marketing manager, WinField. "As we go forward with new dicamba and 2,4D technologies and tank mixes with glyphosate and other products, it will get more complex. The days of simplicity are over."
West Central, Inc., has developed adjuvants for the past 14 years. Product development manager Brian Kuehl points to past trends in adjuvants and how resistant weeds are changing the priorities. Some adjuvants were oil loving to match one chemistry, while others were water loving to match another chemistry. Still others were hybrids to accommodate very different chemistries and needs in a tank mix.