Brian Freed recommends adding ammonium sulfate in your herbicide spray solution and having it fully dissolved with water before adding Roundup. His no-till clients also use Array.

The Array product contains ammonium sulfate and guar gum, which has adhesive properties and prolongs droplet drying time. Array must be the very first component you place in solution as it has the consistency of talcum powder and must be fully dissolved before adding your herbicides.

“We don’t recommend spraying anything post-emergence without it,” says Freed. “There is a sufficient amount of ammonium sulfate in this product, so you don’t have to add any more.”

Get Into Plants. “The longer you can keep the material in a liquid phase or droplet the more material you’re going to get into the plant. I’ve seen studies where 30 percent more pesticide gets into the plant because of the guar and ammonium sulfate combination.

“We’ve been happy applying 9 pounds per 100 gallons of spray material. Some 95 percent of the mix is ammonium sulfate and only 5 percent is guar gum.

“To my knowledge, nothing else does what guar does. There are other polyacrylamides for spraying, but those polymers are sheered by your sprayer pumps. The guar is a short chain polymer and doesn’t get sheered by pumps so it keeps its shape and works more effectively.”

If you use this product, watch your first load carefully since your herbicide spray pattern will likely change dramatically. Data shows 95 percent of the spray fines disappear…