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Debbie writes,

Do I need to use a surfactant if I use Fusilade?

I live in Utah, and have lots of grass growing in and amongst many expensive plants, ground covers, etc. Must I use a surfactant, or can I just mix Fusilade with water and spray, also, what amount of Fusilade should I use per gallon?


Fusilade Herbicide can be mixed with a surfactant such as Non-Ionic Surfactant for Herbicides to help the product work more effectively and it is recommended by the manufacturer.

Apply 0.07-0.14 oz/1000 sq. ft. (3-6 oz./A) along with 0.25% v/v (1/2 pt./25 gals.) of a nonionic surfactant. Application should be made every 28 days when the grass weeds are actively growing. The higher rates may result in temporary discoloration of the desirable turf with recovery in 10-14 days. Do not apply to desirable turf which is under stress. For best results, make applications in spring and fall and avoid treatments during July and August.
Complete control of undesirable grass may take 1-2 growing seasons.

Keep in mind for herbicides the amount of water is not important. What is important is getting the correct amount of product, over the correct amount of area. Mark off 1000 sq/ft and fill your sprayer tank with only water. Spray as if you were covering the area with the herbicide. However many gallons it takes you to cover that area is how many gallons to mix the product with. Everyone's walking speed and how heavily they spray is different, which is why whether you use 2 gallons or 8 gallons of water to cover 1000 sq/ft, you are correct.

Answer last updated on: 05/02/2015

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