Negate 37WG

4.5 out of 5 stars 9 Reviews | 29 Q&A

Negate 37WG

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Average Rating

4.5 out of 5 stars Rating: 4.4

9 Reviews | 29 Q&A

Product Overview

Quali-Pro Negate 37WG is uniquely formulated to provide quick and complete post-emergent contro of poa annua (annual bluegrass) and over 35 grasses and broadleaf weeds in Bermuda grass and Zoysia grass turf. Now labeled for use on residential turf, one application provides 8 to 12 weeks of exceptionally reliable control. Negate herbicide can control even the most common stubborn weeds including but not limited to ryegrass, poa, dandelion and chickweed, leaving your turfgrass stronger and healthier. It provides ultimate control at low use rates in comparison to leading brands making it a cost effective choice.


Features and Specs

Active Ingredient: Metsulfuron 20% Rimsulfuron 16.67%
Target pests: Poa Annua, Poa Trivialis, Ryegrass, Bentgrass, Clovers, Dandelion, Henbit, Chickweed, Wild Onion & Garlic, Spurges and others
* See Label for complete list
For use in: Golf Courses, Sod Farms, College & Professional Sports Fields, Industrial & Commercial Lawns and Residential bermudagrass and zoysiagrass turf.
Application: * See Label for complete application instructions
Pet safe: Yes, if used as directed on Label
Yield: 20 to 80 Gallons per Acre
Formulation: Professional Product
Group 2 Herbicide
Shipping Weight: 0.16 lbs
Manufacturer: Quali-Pro (Mfg. Number: 83012910)
UPC: 072693291010
EPA Registration: 53883-307




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



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.


Days Prior to Overseeding by 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



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.

5 stars   7
4 stars   1
3 stars   0
2 stars   0
1 star   1
  • 5 of 5 Stars

    big bang for the buck on grassy weeds

    By Bradley on 06/06/2017

    Had an excellent kill with a broadcast app for poa triv in my 1/2 acre bermuda lawn, 5-14 day kill- even with cooler temperatures. No more seed heads and thin spots when the summer heat arrives! I'll be looking to finally win the war on poa after combining this with a poa listed prem this fall and 2018.

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    14 of 14 people found this review helpful

  • 5 of 5 Stars

    Part Deux

    By Bradley on 09/30/2017

    Well worth the $$. Speak Softly and Carry a Big Stick. This herbicide continues to be the big stick on POA for my lawn in 7A zone. I've done a couple acres worth this season. Excellent vs the more $$$$ chemicals.

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    10 of 10 people found this review helpful

  • 5 of 5 Stars

    Worked great

    By Jojo on 05/15/2018

    I had a bad infestation of Poa this spring in my bermudagrass lawn (zone 7b) after forgetting to put down a Fall pre-emergent. This stuff worked great and killed all the Poa without harming my lawn.

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    4 of 4 people found this review helpful

  • 5 of 5 Stars

    really works on poa

    By Thom on 04/05/2019

    really expensive for such a small bottle to really use only once. was skeptical about it really working and wasting my time and money on it. took about 2 weeks and I started to notice all the poa in my yard turning yellow

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    3 of 3 people found this review helpful

  • 5 of 5 Stars

    Awsome stuff

    By Dane on 01/10/2020

    Hit the Poa Annua, wild onion and spurweed with Netgate and only 2 weeks later there was noticeable die off. 3 weeks and the POA was completely smoked. Its winter so it will take some addtional time but with the reaults I am seeing I have 100 percent faith it will all be dead in a couple more weeks. Atrizine put during an even hotter month with more active growth didnt even touch the weeds. This stuff is great.

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    1 of 1 people found this review helpful

See all 9 customer reviews

Questions & Answers

Have a question about this product?
How much Negate 37WG per gallon of water?

With Negate 37WG, it is necessary to mix the entire contents of the bottle into one gallon of water to create the correct suspended concentrate of the two active ingredients.  You will then take 3 ounces from that gallon of mixed solution and mix that into one gallon of water for spot treatments.  The original gallon you mixed the entire bottle into will be good for about a month.  

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15 of 16 people found this answer helpful

When is the best time to apply Negate 37WG for poa annua in my Bermudagrass?

Negate is now approved for Residential use (see below). I've got a lot of POA and other "bad growth" that is now green in my mostly dormant Bermuda (DFW market). We'll be in the 60's and dry in a few days after a lot of cold and rain. I've got a pull behind sprayer to cover my 1 acre. Is this a good time to apply Negate 37WG? What else should I know?


Yes, you can use Negate 37WG on your Bermudagrass now to control poa annua (annual bluegrass). You can apply to either dormant grass or when the grass is fully green, but you do not want to apply a post-emergent like this while the grass is in transition, such as during Spring green-up.

Per the new supplemental label, for poa annua, you would use 1.5 oz per Acre. If you are treating an area smaller than 1 Acre, then the manufacturer recommends diluting the entire 1.5 oz bottle in a gallon of water first (not in your sprayer but in a separate container) since there are different sized prills in the concentrate. You would then use 3 oz of your mixed solution in at least 1 gallon of water per 1000 square feet. The remaining initial solution can be stored for 2-4 weeks, just be sure you agitate the solution before mixing and re-applying. You can reapply on your dormant turf after 4 weeks if the target weeds are still present.

Be sure that you use a dedicated sprayer to apply this product or that you clean thoroughly the entire spray equipment before using other products in it. Please refer to the label for complete instructions.

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6 of 6 people found this answer helpful

Can Quali-Pro Neate 37WG be used on St Augustine grass?

I spray residential and commercially. I have some commercial areas with St Augustine grass. Sod farms also grow St.Augustine.


Per the manufacturer, Quali-Pro Negate 37 WG is not for use on any type of St Augustine grass and only the listed tolerant turf species on the product label. If you would like to provide us with info on what you are treating for, we would be happy to try and find a product to meets your needs. 

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3 of 3 people found this answer helpful

What is the mix rate for Quali-Pro Negate 37WG if needing to treat 13,000 sq feet?

Quali-Pro Negate 37WG is not intended to be applied as a spot application in areas less than 1 acre. It is applied at 1.5 fl oz per acre and spray volumes of 20 to 80 gallons of water per acre. 

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2 of 2 people found this answer helpful

Is Negate 37WG safe for St Augustine grass?

Per the manufacturer, Quali-Pro Negate 37 WG is not for use on any type of St Augustine grass and only the listed tolerant turf species on the product label. If you would like to provide us with info on what you are treating for, we would be happy to try and find a product to meets your needs. 


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2 of 2 people found this answer helpful

See all 29 customer questions

Negate 37WG 4.5 out of 5 stars Rating: 4.4 (9 Reviews / 29 Q&A)

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