When is the best time to apply Negate 37WG Herbicide?

The best time to apply Negate 37WG Herbicide is when weeds are young, actively growing, and not yet mature. Applications should be made when air temperatures are between 65°F and 85°F for optimal performance.

For best results:

• Apply Negate 37W in early spring or fall
• Treat fully dormant or fully established bermudagrass or zoysiagrass
• Avoid applications during spring green-up, as this can stress desirable turf
• Apply during the cooler parts of the day (early morning or late afternoon)
• Ensure no rainfall for 24–48 hours after application

Avoid applying when turf is under stress from heat, drought, or disease, as temporary yellowing may occur.

What types of turfgrass is Negate 37WG safe for?

Negate 37WG is labeled for use on:

• Bermudagrass
• Zoysiagrass

It should only be applied when these grasses are:

• Fully dormant, or
• Fully green and actively growing

Avoid application during transition periods (spring green-up) to prevent turf injury.

Which Perennial and Annual Grassy Weeds Does Negate 37WG Herbicide Control?

Bahiagrass, Annual Bluegrass (Poa annua), Perennial ryegrass, Annual ryegrass, Foxtail, Poa trivialis (Roughstalk Bluegrass), Little Barley, Annual sowthistle, Goldenrod, Aster, Henbit, Bittercress, Hoary cress (whitetop), Blue mustard, Kochia, Buckhorn, Lambsquarters, Bur buttercup, Miners lettuce, Canada thistle, Pennsylvania smartweed, Chicory, Plantain, Clover (white), Prickly lettuce, Common chickweed, Prostrate knotweed, Common groundsel, Redroot pigweed, Common mullein, Redstem filaree, Common purslane, Shepherdspurse, Common sunflower, Smallseed flaxweed, Common yarrow, Smooth pigweed, Conical catchfly, Spurge (prostrate), Cow cockle, Sweet clover, Crown vetch, Tansy mustard, Curly dock, Treacle mustard, Cutleaf evening primrose, Tumble mustard, Dandelion, Virginia buttonweed, Dogfennel, Wild carrot, Dollarweed, Wild celery, False chamomile, Wild lettuce, Fiddleneck tarweed, Wild mustard, Field pansy, Wild onion, Field pennycress, Woodsorrel (oxalis), Flixweed.

How long does Negate 37WG take to work?

Negate 37WG is a systemic herbicide, so it works gradually after application.

• Initial results: Typically visible within 10–14 days
• Complete control: May take up to 2–3 weeks, depending on weed type and growing conditions

Because it works internally, weeds may not die immediately, but the herbicide is actively controlling them during this time.

How much Negate 37WG should I use per gallon of water?

For standard applications:

• Use 3 oz of prepared stock solution per gallon of water
• This treats approximately 1,000 sq ft

Because of the unique formulation, you should never measure the dry product directly into your sprayer; always create the initial gallon of solution first.

What is the correct mix rate for Negate 37WG Herbicide?

Negate 37WG uses a two-step mixing process to ensure proper distribution of its active ingredients.

Step 1: Create a stock solution

• Mix the entire 1.5 oz bottle into 1 gallon of water in a separate container (not your sprayer)
• This creates a uniform solution since the product contains different-sized particles

Step 2: Dilute for application

• Use 3 ounces of the stock solution per 1 gallon of water
• Apply this mixture to cover 1,000 square feet

Always agitate the solution before use to keep it evenly mixed.

Negate 37WG Herbicide Use Rate:

1.5 oz. of Quali-Pro Negate 37WG per Acre

What are the Negate 37WG Herbicide Mixing Instructions?

Quali-Pro Negate 37WG is a physical blend of two herbicides, Rimsulfuron and Metsulfuron-Methyl.  As such, you need to mix the entire bottle (1.5 oz) with enough water to cover one acre and not make small individual tank mixes. To make spot treatments or small treatments with a hand sprayer or backpack sprayer, first make a one-acre mixture by mixing the entire bottle of 1.5 ounces of Negate 37WG in enough water to cover one acre. This can be done a clean container or in a Tip n Pour Measuring Bottle - Gallon Size.  Small individual 1,000 sq. ft. applications can be done by filling your sprayer from the 1-acre pre-mix.

1. Fill the tank one-fourth to one-third full of water.
2. While agitating, add the required amount of Quali-Pro NEGATE 37WG.
3. Continue agitation until the Quali-Pro NEGATE 37WG is fully dispersed, at least 5 minutes.
4. Once the Quali-Pro NEGATE 37WG is fully dispersed, maintain agitation and continue filling tank with water. Quali-Pro NEGATE 37WG should be thoroughly mixed with water before adding any other material.
5. As the tank is filling, add tank mix partners (if desired) then add the necessary volume of non-ionic surfactant. Always add surfactant last.

If the mixture is not continuously agitated, settling will occur. If settling occurs, thoroughly re-agitate before usin

Quali-Pro Negate 37WG spray preparations are stable if they are pH neutral or alkaline, and stored at or below 100 degrees Fahrenheit.

If Quali-Pro Negate 37WG and a tank mix partner are to be applied in multiple loads, pre-slurry the QualiPro Negate 37WG in clean water prior to adding to the tank. This will prevent the tank mix partner from interfering with the dissolution of the Quali-Pro NEGATE.

Can I spot treat weeds with Negate 37WG?

Yes, Negate 37WG is effective for spot treatments as well as broadcast applications.

For spot treating:

1. Prepare the full stock solution (entire bottle in 1 gallon of water)
2. Use 3 oz of that solution per gallon of water in your sprayer
3. Apply directly to target weeds, ensuring good coverage

This method ensures accurate dosing even in small areas.

Do I need to use a surfactant with Negate 37WG?

Yes, for best results, it is recommended to add a non-ionic surfactant (NIS) to your spray mixture.

Benefits of using a surfactant:

• Improves coverage and adhesion to weed leaves
• Enhances absorption of the herbicide
• Leads to faster and more effective weed control

How often can I reapply Negate 37WG?

If weeds persist after the initial application:

• You can reapply after 4 weeks
• Only reapply when turf is dormant or fully established
• Avoid repeated applications during periods of turf stress

Always monitor weed growth stage—applications are most effective on new, actively growing weeds.

How many days should you wait before overseeding after applying Negate 37WG Herbicide in your state?

• 7 days - AL, AZ, FL, GA, LA, MS,NC, NM, SC, TX
• 14 days - AR, OK, TN
• 28 days - IL, IN, KS, KY, MD, MO, NV, WV, VA

How long can I store the mixed solution?

Once the initial stock solution is prepared:

• It can be stored for 2 to 4 weeks
• Store in a sealed container
• Shake or agitate thoroughly before each use to maintain proper suspension

Do not store diluted spray mixtures long-term—only the concentrated stock solution.