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QUALI-PRO
Negate 37WG
Negate 37WG is a powerful post-emergent herbicide that effectively controls various common weeds on turfgrass, such as dandelion, chickweed, and poa annua. It delivers reliable control that can last 8 to 12 weeks.
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Negate 37WG product page
Min : 55 - Max : 55
Price as of
10/14/25
10/14/25
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Negate 37WG, manufactured by Quali-Pro, is a tough post-emergent herbicide that comes in a wettable granule form to control over 35 types of broadleaf and grassy weeds in bermudagrass and zoysiagrass turf.
The herbicide's active ingredients are both rimsulfuron and metsulfuron, which makes it a dual-powered herbicide that can successfully control various annual grasses and broadleaf weeds in established warm-season turfgrass.
Additionally, its low use rate and water-dispersible granule (WDG) formulation ensure efficient mixing and application, making it an economical yet highly effective choice for maintaining pristine, weed-free warm-season turf.
Negate 37WG is a low-odor herbicide that offers superior post-emergent weed control in listed warm-seasoned turf within golf courses, sod farms, residential lawns, commercial lawns, and more. Unlike many other herbicides, it provides long-lasting residual suppression between 8 to 12 weeks, reducing the need for repeat applications and saving both time and cost.
Tools Needed
You will need to mix the product into a power sprayer of your choosing, such as a professional pesticide spray rig, for large-volume applications.
How to Use
- Step 1: Determine how much Negate 37WG to use by measuring the square footage of the treatment area. To do this, measure the treatment area's length and width in feet, then multiply them together (length x width = square footage). For acreage, divide the square footage by one acre (square footage / 43,560 sq. ft. = acres). Negate 37 is applied at 1.5 fl. oz. per acre and spray volumes of 20 to 80 gallons of water per acre. Check the label for specific rates, as they vary depending on the application site and the weed you are trying to control.
- Step 2: Fill your spray tank with the appropriate amount of water and then add the appropriate amount of Negate 37WG based on your calculations. Fill with the remaining half of water and then agitate the sprayer until the solution is well-mixed.
- Step 3: Spray the target weeds, getting even coverage via the fan spray setting.
- Step 4: Check back after 2 weeks and reapply if necessary to get complete control.
Where to Use
Negate 37WG can be used on Golf Courses, Sod Farms, Professionally Managed College and Professional Sports Fields, Industrial and Commercial Lawns, and Other Similar Non-Residential Areas.
It is not intended for residential use.
When to Use
Use this product at the first sign of weed growth in early spring. The product may be less effective during the high summer heat.
Safety Information
Negate 37WG is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product.
Keep people and pets away from the area until the product has completely dried.
Special Considerations
Quali-Pro Negate 37WG is not intended as a spot application in areas less than 1 acre.
| Availability | Online |
| Restricted Use | No |
| Shipping Restrictions | 1.5 Ounce: AK, CA, IA, ID, IN, MA, MI, MN, MT, ND, NE, NY, OR, PA, RI, SD, VT, WA, WI, WY |
| Brand | QUALI-PRO |
| Keith's Pro Tips | "Negate 37WG is a great product that can provide a long period of control, so you won't have to apply it as often. Adding a surfactant to the product mixture can improve results." |
| Product Drawbacks | If the mixture is not continuously agitated, settling will occur. If settling occurs, thoroughly re-agitate before using. |
| Target Pests | Annual sowthistle, Aster, Bittercress, Blue mustard, Buckhorn, Bur buttercup, Canada thistle, Chicory, Clover, Common chickweed, Common groundsel, Common mullein, Common purslane, Common sunflower, Common yarrow, Conical catchfly, Cow cockle, Crown vetch, Curly dock, Cutleaf evening primrose, Dandelion, Dogfennel, Dollarweed, False chamomile, Fiddleneck tarweed, Field pansy, Field pennycress, Flixweed, Goldenrod, Henbit, Hoary cress, Kochia, Lambsquarters, Miners lettuce, Pennsylvania smartweed, Plantain, Prickly lettuce, Prostrate knotweed, Redroot pigweed, Redstem filaree, Shepherdspurse, Smallseed flaxweed, Smooth pigweed, Spurge, Sweet clover, Tansy mustard, Treacle mustard, Tumble mustard, Virginia buttonweed, Wild carrot, Wild celery, Wild lettuce, Wild mustard, Wild onion, and Woodsorrel. |
| Application Equipment | Backpack Sprayer, Pump Sprayer |
| Application Methods | Broadcast Spray, Spot Treatment |
| Active Ingredient | Rimsulfuron 16.67% Metsulfuron methyl 20% |
| Product Type | Herbicide |
| Formulation | Water Dispersible Granule (WDG) |
| Application Rate | Apply 1.5 oz. of Negate 37WG per Acre. |
| Shelf Life | Negate 37WG can last 3 years in storage when kept in a cool dry place. |
| Yield | 1.5 oz. of Negate 37WG can treat an acre of land with 20 to 80 Gallons per Acre |
| Use Sites | Outdoors |
| Time to Kill | Plants exposed to Negate 37WG die within 2 weeks. |
| Comparable Products | Rimsulfuron 25DF, MSM Turf |
| Use Caution With | St Augustine |
| EPA Registration # | 53883-307 |
| Restricted Use | No |
|---|---|
| Shipping Restrictions | AK, CA, IA, ID, IN, MA, MI, MN, MT, ND, NE, NY, OR, PA, RI, SD, VT, WA, WI, WY |
| Availability | Online |
| Signal Word | CAUTION |
| Keith's Pro Tip | "Negate 37WG is a great product that can provide a long period of control, so you won't have to apply it as often. Adding a surfactant to the product mixture can improve results." |
| Target Pests Multi | Annual Bluegrass, Annual Sowthistle, Aster, Bahiagrass, Bittercress, Blue Mustard, Buckhorn, Bur Buttercup, Canada Thistle, Chickweed, Clover, Common Chickweed, Common Groundsel, Common Mullein, Common Purslane, Common Sunflower, Common Yarrow, Conical Catchfly, Cowcockle, Crown Vetch, Curly Dock, Cutleaf Evening Primrose, Dandelion, Dog Fennel, Dollarweed, Evening Primrose, False Chamomile, Fiddleneck Tarweed, Field Pennycress, Field_Pansy, Flixweed, Foxtail, Henbit, Hoary Cress, Kochia, Lambsquarters, Little Barley, Miners Lettuce, Oxalis, Pennsylvania Smartweed, Perennial Ryegrass, Plantain, Poa Annua, Prickly Lettuce, Prostrate Spurge, Prostrate_Knotweed, Redroot Pigweed, Redstem Filaree, Roughstalk Bluegrass, Shepherdspurse, Smallseed Flaxweed, Smooth Pigweed, Sowthistle, Tansy Mustard, Tarweed, Treacle Mustard, Tumble Mustard, Virginia Buttonweed, White Clover, Whitetop, Wild Carrot, Wild Celery, Wild Lettuce, Wild Mustard, Wild Onion, Woodsorrel, Chicory, Dogfennel, Goldenrod, Sweet Clover |
| Time to Kill | Plants exposed to Negate 37WG die within 2 weeks. |
| Chemical Type | Herbicide |
| Formulation | Water Dispersible Granule (WDG) |
| Application Methods | Broadcast Spray, Spot Treatment |
| Product Drawbacks | If the mixture is not continuously agitated, settling will occur. If settling occurs, thoroughly re-agitate before using. |
| Active Ingredient | Rimsulfuron 16.67% Metsulfuron methyl 20% |
| Application Equipment | Backpack Sprayer, Pump Sprayer |
| Mix Rate | Apply 1.5 oz. of Negate 37WG per Acre. |
| Use Sites | Outdoors |
| Yield | 1.5 oz. of Negate 37WG can treat an acre of land with 20 to 80 Gallons per Acre |
| EPA Registration No. | 53883-307 |
| Shelf Life | Negate 37WG can last 3 years in storage when kept in a cool dry place. |
| Comparable Products | Rimsulfuron 25DF, MSM Turf |
| Children or pets? | No |
| Property Characteristics | None |
