Supercharge every application with adjuvants by WinField United


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WinField United Canada has built a strong reputation for helping independent Canadian ag retailers bring ideas and innovation to farmers across the country, and is a known leader in crop protection surfactants — including game-changing adjuvants.

Darren McColm, Agronomy Lead for Eastern Canada with WinField United, says that it’s key to understand the role of each ingredient in the spray tank, including surfactants.

Surfactants are a specific class of adjuvants designed to work with crop protection products to improve performance.

“Surfactants work really by helping the droplets to stick and spread on that desired target to ensure that plant gets uptake. Most farmers are familiar with non-ionic surfactants, but surfactants are simply one class of those activator adjuvants that are available to farmers,” McColm says.

WinField United offers methylated seed oils, high surfactant oil concentrates, and other products including utility modifiers such as InterLock for drift control and Crimson NG to improve water quality.

These key adjuvants are designed to improve compatibility in the tank, droplet size, distribution at the nozzle, or improve the overall spray pattern to help get the product to the target pest. “Products like InterLock for drift control and canopy deposition, or Crimson NG to improve water quality, are adjuvants that fall into that category that are referred to as utility adjuvants because they modify the conditions but they don’t interact with the other pesticide products in the tank,” McColm says.

Why would a farmer want to add an adjuvant to the tank? McColm says that the right product will improve the consistency and performance of the crop protection application.

“We want to manage risk when we deal with local environmental conditions. Performance can come down with things like water quality, wind, weed staging; those are just a few examples. Of course, there are label requirements on specific products, and some products just require an activator adjuvant to work…farmers can choose the right adjuvant for the right job,” he says.

When farmers know how different adjuvants work best, they can pick the right one to help you optimize your spray investment.

“It’s really about the flexibility to pick the best adjuvant for the conditions, and the crop, and the weed staging. It also depends on water volumes, if you’re using a high water volume rate or a low water volume rate; when it’s separated, you can adjust accordingly to that water volume you’re using. The other benefit is really you’re only going to purchase and pay for what you need. Depending on the situation, you won’t have adjuvant left over, and depending on the situation you may not quite have enough, and that would decrease performance. In a number of our herbicide products, we’ve started to unpack the adjuvants from the box to allow the farmers a little more flexibility and control to get that value for their buck,” McColm says.

InterLock, the industry leader in drift control, has been applied on over 70 million acres annually over North America.

WinField United has been involved in the adjuvant business for nearly 30 years, investing in discovery and research & development. The company uses a state-of-the-art lab, complete with greenhouses, growth chambers, and the patented Spray Analysis System which features a wind tunnel to test products, pesticides and adjuvants.

WinField United also hosts spray clinics across Canada, reaching over 2,000 farmers, agronomists, aerial applicators, and retailers.

If you’re interested in learning more about the products from WinField Canada, products like InterLock, finding an upcoming spray clinic or independent retailer who sells WinField United adjuvants, check out


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