Pylex Herbicide


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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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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.

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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.

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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.

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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. 

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