Pylex Herbicide


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5 out of 5 stars Rating: 5

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Pylex Herbicide bottle (8 oz)

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Pylex Herbicide

Pylex Herbicide is a broad spectrum, systemic post-emergence herbicide use to control broad-leaf and grass weeds on sod farms, golf courses and residential turfgrasses. It's active ingredient, Topramezone, will target Bermudagrass and goosegrass in cool season turfgrasses (bentgrass is marginally tolerant). Pylex is able to control these two problematic weeds, and shows great activity on nimblewill, crabgrass and other weeds. The systemic action attacks these weeds by not allowing plants to complete photosynthesis. It will control over four dozen broadleaf and grass weeds in turfgrasses including: Centipedegrass, Bluegrass, Kentucky, Fine Fescue, Tall Fescue, Ryegrass and Perennial.

Mode of Action

Pylex is absorbed by leaves, roots and shoots and is translocated to the growing points of susceptible weeds. It inhibits carotenoid biosynthesis (group 27). Soon after application, treated weeds will turn white because of loss of chlorophyll and growth stops.

Mixing Instructions for Backpack and Pump-up Type Sprayers

Begin with a clean spray tank. Fill the spray tank 1/2 full with clean water. Add the required amount of Pylex. Because a small amount of Pylex is required for spot applications, use the following directions to ensure proper mixing. Measure Pylex required for specific spray volume according to Table 2 on product label. DO NOT add directly to the spray tank. Pre-mix in a small, sealable container (e.g. 8 to 16 fl ozs) filled 1/2 to 3/4 with water. Add contents to the spray tank. Cap sprayer and agitate to ensure mixing. Uncap sprayer and add appropriate amount of COC or MSO. Cap sprayer and agitate again. Uncap sprayer and finish filling tank to desired level. During application, periodically agitate the mixture to ensure mixing. If the mixture is allowed to settle for any period of time, thorough agitation is essential before spraying is resumed. Apply spray mixture directly on sporadically occurring susceptible turfgrass weeds (see Table 1 on product label). For best results, apply on a spray-to-wet basis. Follow-up applications may be made if necessary (see Table 1). Use a spray colorant or indicator in the spray tank for more efficient spot applications. DO NOT apply more than 4.0 fl oz Pylex (0.089 lb ai) per acre (0.092 fl oz per 1000 sq ft) per year.

Mixing Order

Thoroughly mix Pylex before dispensing from container.

Maintain constant agitation throughout mixing and application.

1. Water- Begin by agitating a thoroughly clean sprayer tank 3/4 full of clean water.

2. Inductor- If an inductor is used, rinse it thoroughly after each component has been added.

3. Products in PVA bags- Place any product contained in water-soluble PVA bags into the mixing tank. Wait until all water-soluble PVA bags have fully dissolved and the product is evenly mixed in the spray tank before continuing.

4. Water-dispersible products (dry flowables, wettable powders, suspension concentrates including Pylex, or suspo-emulsions)

5. Water-soluble products

6. Emulsifiable concentrates (including COC or MSO)

7. Water-soluble additives (including chelated iron or soluble nitrogen fertilizer when applicable; not all chelated iron or sprayable nitrogen fertilizers are compatible with Pylex) - Always perform a compatibility test to ensure proper mixing. See Compatibility Test for Mix Components section of label for directions.

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  • 5 of 6 people found this review helpful:

    5 of 5 stars  Works like a charm!
    By Mark in Apex on 03/01/2017

    I know this stuff is expensive, but it works great. I had an infestation of bermuda grass on my lawn from a neighboring pasture. Two applications and reseeding of fescue and it's a new lawn. Follow the instructions. I followed the advice of the Virginia Tech ag extension. In in NC. Bermuda turns white after a couple of weeks. Second application killed off the remaining. For me, it beat the alternative of killing off the lawn with roundup and starting over.

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  • 5 of 5 stars  Quick and accurate service!
    By Brent in Tennessee on 08/15/2017

    My product was delivered ahead of advertised schedule, well packaged, and accurate.

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08/31/2016 Donna from Morristown, Tenn

QIs there a similar product to Pylex Herbicide that kills bermuda grass (but does not harm fescue) but in a smaller size or more affordable price?


Yes, Fusilade II Herbicide would be a great and lower cost alternative to the Pylex herbicide. It can be used in a fescue lawn to kill bermuda grass. It can be VERY difficult to kill completely, and will take multiple treatment to get it done but Fusilade II is usually the go to product for this issue.†

This is directly off the product label:

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 non ionic surfactant. Application should be made every 28 days when the grass weeds are actively growing. The higher rates may result in temporary discolorization of the desirable turf with recovery in 10-14 day. Do not apply to desirable turf 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.

We recommend calling your local†county extension office as they usually know the optimum times for spraying lawns†in your area.†

2 of 3 people found this answer helpful.
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08/05/2015 Steve from Inman

QHow many ounces or mL of Pylex Herbicide and surfactant do I use per gallon of water?


Pylex Herbicide is mixed at 0.023 - 0.034 oz. per 0.75 gallon of water per 1,000 sq. ft. The amount of the surfactant will vary depending on the one that you have and dilutions can be found on the product label.

1 of 1 people found this answer helpful.
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04/06/2015 Ben from Dighton, Ks

QWill this kill my buffalo grass lawn when I'm spaying the Bermuda grass patches?


On page 6 of the Pylex Herbicide Label states DO NOT apply to buffalograss therefore it would damage the desired turf you are trying to keep. 

Tenacity is labeled to kill bermudagrass yet safe for established buffalograss. Please refer to the product label for application instructions. 

1 of 1 people found this answer helpful.
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08/21/2015 Bruce from Kansas City

QWill Pylex Herbicide help eliminate zoysia in bluegrass or fescue?


Pylex Herbicide is labeled for use in bluegrass and fescue turf, and it should at least suppress the zoysia. Please see the product label for complete application instructions.

1 of 1 people found this answer helpful.
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07/23/2013 Chuck from Bloomington, Indiana

QYou list most of desirable turf species as " Target Pest". Is this a mistake or is this a non-selective?

AWe apologize for the mistake and we are fixing our website now. The species listed after the colon are the species safe for spraying. If you ever have questions about information on our site, you can always refer to the actual product label as it is the truth above all else. We provide all product labels and MSDS forms for every product we carry on each product page in a PDF format. We appreciate your help in improving our website and our information provided to customers.

1 of 1 people found this answer helpful.
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08/07/2017 Brian from Portsmouth, Va

QWhen applying Pylex Herbicide, can you use it more than a spot spray, and does it take care of nutsedge?


Pylex Herbicide is a broad spectrum, systemic post-emergence herbicide for residential spot spraying and is not labeled for nutsedge.†You would either want to use†Sedgehammer Herbicide†or†Dismiss Turf Herbicide†for post emergent control of your nutsedge. Both will do a great job and cover a large area. The Sedghammer is primarily for Yellow and Purple Nutsedge and Kyllinga. Each bottle of Sedgehammer would treat roughly 1 acre so you would need 6 of these to complete the treatment. The Dismiss covers sedges as well as may other broadleaf weeds in established lawns. The Dismiss gets used at the rate of 8-12 ounces per acre for Bermuda grass so at the lower dilution you would need 8 bottles to cover all 6 acres of your property as a broadcast spray. A surfactant is not needed with the dismiss, however if you use the 1.33 ounce bottle of Sedgehammer a surfactant would be required. These are the top products on the market for nutsedge control. There are no products on the market that will control nutsedge as a pre-emergent. We can not offer any information on MSMA as it is no longer on the market for purchase. Please let us know if you have any other questions.

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08/07/2017 Brian from Portsmouth, Va

QWhen do you recommend applying Pylex Herbicide for dallis grass and bermuda grass?
Should I use it any of time doing the year? I'm seeding and aerating 3rd week in September.


There are two application options for using Pylex Herbicide to treat for dallisgrass and bermudagrass. Please refer to the product label and chart below.†

Option A: 3 applications at 0.023 to 0.030 fl oz per 1,000 sq ft applied at 3-4 week intervals

† † * First application mid to late summer or approx 9-12 weeks before fall resseding period for cool season grasses.†

Option B: 2 applications at 0.034 fl oz per 1,000 sq ft applied at 3-4 week intervals.†

† † *†First applciation mid to late summer or approx 6-8†weeks before fall resseding period for cool season grasses.†

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08/07/2017 Brian from Portsmouth, Va

QWhat COC or surfactant do you recommend to use with Pylex Herbicide?
How does it help?


We would suggest using the Non-Ionic Surfactant for Herbicides with Pylex Herbicide. The use will increase the effectiveness.

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07/23/2017 Ted from Harwinton, Ct

QWhy is Pylex labeled for spot spray applications only on athletic fields?
I have several large patches in the center of some soccer fields I need to control post emergently.


Pylex Herbicide†is only labeled for spot treating the actively growing weeds on residential turfgrass and athletic fields to limit contact with people and pets who would use the area once dry.

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08/25/2017 Marcus from Mt Juliet, Tn

QHow soon can I reseed fescue after application of Pylex Herbicide?


It is recommended that you wait at least 28 days after applying Pylex Herbicide to reseed your lawn.

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06/26/2017 Jimmy from Greensboro, Nc

QWill Pylex Herbicide kill goosgrass in a bermuda field?


Pylex Herbicide†will kill both Bermuda and Goosegrass.†Revolver Herbicide is a post-emergent herbicide that selectively removes cool-season grasses from warm-season grasses. It is labeled to remove Goosegrass from Bermuda Grass.†

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