Dithiopyr 40 WSB Pre Emergent Herbicide
QUALI-PRO
Dithiopyr 40 WSB Pre Emergent Herbicide
Dithiopyr 40 WSB is a pre-emergent herbicide use to control annual grasses and broadleaf weeds in various areas. It is safe to apply to residential lawns and ornamental landscapes.
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Dithiopyr 40 WSB Product Page
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Dithiopyr 40 WSB Pre Emergent Herbicide is manufactured by Quali-Pro and used to prevent unsightly vegetation from growing on turfs and lawns. It uses the active ingredient Dithiopyr to control for common annual grasses and broadleaf weeds such as Crabgrass and Carpetweed.
Dithiopyr 40 WSB Pre Emergent Herbicide can be used on golf courses and residential properties to keep the turf looking healthy and beautiful. The herbicide comes in 5-ounce water-soluble packets and is compatible with various types of liquid fertilizers and pesticides for enhanced lawn care. For beautiful landscapes and ornamental lawns, apply Dithiopyr 40 WSB Pre Emergent Herbicide.
Tools Needed
To apply Dithiopyr 40 WSB, you will need a professional skid sprayer since Dithiopyr 40WSB is meant for large area treatments.
How to Use
- Step 1: Determine how much Dithiopyr WSB you need by first calculating the square footage of the treatment area. To do this, measure and multiply the lawn's length x width. Dithopyr WSB comes in water-soluble pouches. Dithiopyr is really only meant for large areas as 1 5 oz. packet mixed with water can treat 10,890 sq. ft.
- Step 2: Fill your sprayer halfway with water and then add the appropriate amount of Dithiopyr for your application to the spray tank. Fill the sprayer the rest of the way with the required amount of water and then agitate the sprayer to ensure the product is well-mixed.
- Step 3: Apply the product as a spot treatment to your lawn and make sure the nozzle is pointed as close down to the turf as you can to avoid drift and use a cone fan nozzle spray setting for uniform coverage. Apply to wet and make repeat applications 3 to 4 months apart for extended pre-emergent weed control.
Where to Use
Dithiopyr 40 WSB Pre Emergent Herbicide can be applied to established residential and commercial lawns, commercial sod farms, non-croplands, industrial properties, ornamental plants as well as landscape, field-grown and container materials. When applied to golf courses, Dithiopyr 40 can be applied to fairways, roughs, and tee boxes.
When to Use
Dithiopyr 40 WSB Pre Emergent Herbicide is only effective when applied before the germination of seeds. Apply Dithiopyr 40 WSB during the spring or early summer for Crabgrass control.
Safety Information
Dithiopyr 40 WSB Pre Emergent Herbicide is safe to use around children and pets when applied according to the product label. Allow treated areas to completely dry before re-entering. Always wear the proper personal protective equipment (PPE) before mixing or applying Dithiopyr 40 WSB Pre Emergent Herbicide.
Special Considerations
4 5-ounce water-soluble packets come in 1 bag of Dithiopyr 40 WSB Pre Emergent Herbicide. Dithiopyr 40 WSB Pre Emergent Herbicide will not kill targeted weeds after they have emerged from the ground, unless it is being applied to control Crabgrass before the stem begins to form.
| Availability | Online |
| Restricted Use | No |
| Shipping Restrictions | |
| Brand | QUALI-PRO |
| Keith's Pro Tips | "For maximum results when using Dithiopyr 40 WSB Pre Emergent Herbicide, make sure there are no existing weeds present because pre-emergent will not be able to control established weeds." |
| Product Drawbacks | Dithopyr 40 WSB will not control weeds that have already emerged. If your target weed has already appeared, you will need to use a post-emergent herbicide. |
| Target Pests | Annual bluegrass, Barley, Barnyardgrass, Bittercress, Black Medic, Brome, Buttercup Oxalis, Carolina eranium, Carolina Geranium, Carpetweed, Chickweed, Common Lespedeza, Common Purslane, Corn Speedwell, Creeping Woodsorrel, Crowfootgrass, Dallisgrass, Garden Spurge, Giant Foxtail, Goosegrass, Green Foxtail, Henbit, Kikuyugrass, Large Crabgrass, London Rocket, Marestail, Mary's Grass, Mustard, Parsley-Piert, Pineappleweed, Prostrate Knotweed, Prostrate Kotweed, Prostrate Spurge, Purple Coneflower, Redroot Pigweed, Sandbur, Shepherdspruce, Smooth Crabgrass, Smutgrass, Southern Crabgrass, Spotted Spurge, Wild Oat Ryegras, Yellow Foxtail, and Yellow Sorrel. |
| Application Equipment | Backpack Sprayer, Gloves, Pump Sprayer, Spray Rig |
| Application Methods | Broadcast Spray, Spot Treatment |
| Active Ingredient | Dithiopyr 40% |
| Product Type | Herbicide |
| Formulation | Water-Soluble Powder |
| Application Rate | A 5 oz. Water Soluble Packet of Dithiopyr 40WSB will treat 10,890 sq. ft in at least 25 gallons of water per acre or minimum of 1 gallon per 1,000 sq. ft. |
| Shelf Life | Dithiopyr 40 WSB Pre Emergent Herbicide will last for up to 1 to 2 years when stored according to the product label. Store Dithiopyr in a cool, dry storage areas using the original container. |
| Yield | 1 packet of Dithiopyr 40 WSB Pre Emergent Herbicide will treat up to 10,890 square feet, or 0.46 ounces per 1,000 square feet. |
| Use Sites | Outdoors |
| Time to Kill | Dithiopyr 40 WSB Pre Emergent Herbicide prevents the growth of weeds by killing the seeds. |
| Comparable Products | Balan 2.5 G Pre Emergent Herbicide |
| Incompatible Home Siding | Metal |
| EPA Registration # | 53883-374 |
4/15/18
Daniel Cossette
Verified Buyer
dithiopyr
finaly the crabgras is gone after so many attempts i will recommand it to my friends.
5/9/13
Bojidar S
Verified Buyer
Good product
Work well for my lawn. Goog seller.
| Restricted Use | No |
|---|---|
| Shipping Restrictions | AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA |
| Availability | Online |
| Signal Word | WARNING |
| Keith's Pro Tip | "For maximum results when using Dithiopyr 40 WSB Pre Emergent Herbicide, make sure there are no existing weeds present because pre-emergent will not be able to control established weeds." |
| Time to Kill | Dithiopyr 40 WSB Pre Emergent Herbicide prevents the growth of weeds by killing the seeds. |
| Chemical Type | Herbicide |
| Formulation | Water-Soluble Powder |
| Application Methods | Broadcast Spray, Spot Treatment |
| Product Drawbacks | Dithopyr 40 WSB will not control weeds that have already emerged. If your target weed has already appeared, you will need to use a post-emergent herbicide. |
| Active Ingredient | Dithiopyr 40% |
| Application Equipment | Backpack Sprayer, Gloves, Pump Sprayer, Spray Rig |
| Mix Rate | A 5 oz. Water Soluble Packet of Dithiopyr 40WSB will treat 10,890 sq. ft in at least 25 gallons of water per acre or minimum of 1 gallon per 1,000 sq. ft. |
| Low Use Rate | 0.23 oz./1,000 sq. ft. |
| High Use Rate | 0.72 oz./1,000 sq. ft. |
| Use Sites | Outdoors |
| Yield | 1 packet of Dithiopyr 40 WSB Pre Emergent Herbicide will treat up to 10,890 square feet, or 0.46 ounces per 1,000 square feet. |
| EPA Registration No. | 53883-374 |
| Shelf Life | Dithiopyr 40 WSB Pre Emergent Herbicide will last for up to 1 to 2 years when stored according to the product label. Store Dithiopyr in a cool, dry storage areas using the original container. |
| Comparable Products | Balan 2.5 G Pre Emergent Herbicide |
| Children or pets? | No |
| Property Characteristics | None |
Questions and Answers
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Q:How much for 15k sqft ? How many gallons water and prob what about two to three ounces of product2/12/24A:This will depend on the site you are trying to treat best to refer to the product label for specific application rates.
Amanda Chavez
2/13/24Certified Buyer -
Q:My baseball fields are covered with sand burrs, what kills them and when do I apply?3/8/21
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Q:Is it safe on bermuda grass? And St Augustine grass2/26/21A:Yes when used as directed on the label. I have never had any problems with it and it did a good job
Michael Edwards
2/27/21Certified Buyer -
Q:Can speedzone be mixed with this product?11/14/20
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Q:will it kill dallisgrass in tall fescue lawns?11/4/20
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Q:will it kill dallisgrass?11/4/20
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Q:can this product be used on centipede and St. Augustine lawns (southern Grasses)?3/19/20
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Q:Will this control hairy bittercress and poa annua effectively?3/9/20A:The Hairy Bittercress is easy I think. I would say yes. The Poa Annua can be a battle. If you are a hardcore do-it-yourselfer, you might try my procedure. Otherwise, you may want to consult a professional spray company. You can put down Dithiopyr now. In two months you can put down Prodiamine. If you still get any weeds between April and June, you can treat gently with an easy spot spray of Princep (Simizine). You should not need that any more come this time next year. As it begins to cool down at the end of the summer, hit your lawn everywhere, but not too heavy with Tenacity. This will allow you to plant seeds in Early October when it starts to cool but well before it starts to frost overnight (maybe mid to late September. Timing is crucial and you need water at least every other day for at least two to maybe three weeks. Four is perfect but unlikely unless you have irrigation). If you have weeds somehow (you shouldn’t) carefully add another Tenacity treatment. The second one is post emergent. Everything else until now has been pre-emergent except the Princep. You should be good, but if you are really fighting the Kentucky Bluegrass, you can do one more Barricade in late fall/early winter before the ground freezes. If you fail to plan for the end of the year, you may not win the poa battle. It’s hard and expensive and even gets toxic. I wear a spacesuit. Like I said, you may want to hire the pros. Good luck.
Rodney Williams
3/10/20Certified Buyer -
Q:Your how to instructions suggest it's Ok to open the packets and measure out the needed amount of Dithiopyr WSB, is that accepted practice when less than a full packet is needed ? "You will want to mix 0.46 oz of the product in 1 gallon of water per 1,000 sq. ft"10/7/19A:Yes you can do this. From personal experience: The packets are water degradable, therefore wear gloves so moisture from your hands don't make this any more difficult. Product is a very fine so do this where there isn't any air flow. Be very careful not to breathe any in. Could be a messy process if you're not careful.
Craig Griffith
10/7/19Certified Buyer -
Q:I need for 2000 Sq ft. How much is each packet in oz? Can I open each packet and weigh if I need to or do I drop a packet in a sprayer if water soluble? I had the same from DoMyOwn site but each packet was more than I needed for 1000 Sq ft but the instructions say to drop each packet in a sprayer.5/15/19A:Each packet weighs 5 ounces. You need 1/10 of a packet for 2000 sq ft or .5 ounces. Don’t know how to tell you how to get that amount without opening the packet and weighing. Make sure you read the label
Michael Edwards
8/9/19Certified Buyer
