Sonora (Clopyralid 3 Herbicide)
Sonora (Clopyralid 3 Herbicide)
Sonora Herbicide (formerly named Clopyralid 3), manufactured by Alligare, is a effective post-emergent herbicide that controls difficult broadleaf weeds and brush to clear various terrains in a couple of days after application.
This effective emulsifiable concentrate contains the powerful active ingredient clopyralid 40.9%, to get rid of many noxious and invasive weeds and woody plants such as mesquite in rangelands, conifer sites, and more.
Sonora Herbicide is compatible with surfactants and adjuvants to boost control. It offers excellent and dependable control of emerged weeds like knapweeds before and after planting in forest sites or other terrains.
Tools Needed
To apply Sonora Herbicide, you will need a backpack sprayer, handheld pump sprayer, or skid sprayer. For large rangelands, the skid sprayer is suggested. When making smaller applications or spot treatments, we suggest a handheld or backpack sprayer.
How to Use
- Step 1: Determine how much Sonora you will need by first calculating the square footage of the treatment area. To do this you will need to measure and multiply the length and width of the target area. Sonara can be applied at a rate of 3/32 fl/ oz. to 1/4 fl. oz. in 1 gallon of water to cover 1,000 sq. ft. So, for example, if you had a 2,000 sq. ft. area to treat, you will need to mix 0.1875 to 0.5 fl. oz. of product in 2 gallons of water.
- Step 2: Fill your sprayer tank halfway with water and then add the required amount of Sonora Herbicide based on your calculations to the sprayer and mix. You can then add any compatible surfactants, adjuvants, or drift control agents to the spray tank. Shake well until mixed and you are ready to apply.
- Step 3: Spray the mixture to the target weeds or brush until wet but not to the point of runoff. Use a fan spray nozzle setting to evenly cover all of the targeted vegetation.
Where to Use
Sonora Herbicide is for use on non-cropland, non-turf, and non-residential areas. It is formulated to use on rangelands, job sites, construction sites, storage sites, along roadways, and other rights-of-way. It is ideal for use on areas that need to be bare ground.
When to Use
The ideal time when Sonora Herbicide should be applied is during healthy growth or flowering seasons. For the best results, Sonora should be applied no sooner than 3 to 4 days before unwanted vegetation emerges from the ground so the product makes contact with the leaf tissue.
Safety Information
Sonora Herbicide is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product.
Do not allow children and pets to enter treated areas until 24 hours have passed after application.
Special Considerations
Do not transfer livestock from treated grazing areas, or from feeding of treated hay, to sensitive broadleaf crop areas without first allowing 3 days of grazing on an untreated pasture (or feeding of untreated hay). If livestock are transferred within less than 3 days of grazing untreated pasture or eating untreated hay, urine and manure may contain enough clopyralid to cause injury to sensitive broadleaf plants.
Availability | Online |
Restricted Use | No |
Shipping Restrictions | AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA |
Brand | ALLIGARE |
Keith's Pro Tips | "For the best results when applying Sonora, have a minimum of 3 to 4 days of vegetation growth, to ensure there is enough leaf surface for the herbicide to penetrate." |
Product Drawbacks | Sonora Herbicide can affect susceptible broadleaf plants directly through foliage and indirectly by root uptake from treated soil. Therefore, do not apply this product directly to, or allow spray drift to come in contact with, vegetables, flowers or other |
Target Pests | Acacias, Annual Sowthistle, Artichoke Thistle, Black Medic Clover, Buffalobur, Bull Thistle, Canada Thistle, Coffeeweed, Common Burdock, Common Cocklebur, Common Groundsel, Common Ragweed, Common Sunflower, Common Teasel, Cornflower, Curly Dock, Cutleaf Nightshade, Daisy Oxeye, Dandelion, Diffuse Knapweed, Eastern Black Nightshade, Eastern Redbud, False Chamomile, Giant Ragweed, Green Smartweed, Hairy Nightshade, Hawksbeard, Hop Clover, Horseweed, Italian Thistle, Jerusalem Artichoke, Jimsonweed, Kudzu, Ladysthumb, Lambert Locoweed, Locust, Marshelder, Mayweed Chamomile, Meadow Salsify, Mesquite, Mimosa, Musk Thistle, Narrowleaf, Orange Hawkweed, Pineappleweed, Prickly Lettuce, Red Clover, Red Sorrel, Russian Knapweed, Sicklepod, Spotted Knapweed, White Clover, White Locoweed, Wild Buckwheat, Wild Sunflower, Wisteria, Yellow Hawkweed, Yellow Starthistle |
Application Equipment | Backpack Sprayer, Gloves, Pump Sprayer, Respirator Mask, Spray Rig |
Application Methods | Broadcast Spray, Spot Treatment |
Active Ingredient | Clopyralid- 40.9% |
Product Type | Herbicide |
Formulation | Emulsifiable Concentrate (EC) |
Application Rate | For general applications made with a handheld pump sprayer mix 3/32 fl. oz. (2.8 mL) to 1/4 fl. oz. (7.3 mL) of Sonora Herbicide per 1 gallon of water. For more specific application rates please refer to the label. |
Shelf Life | Sonora Herbicide will last for up to 1 to 2 years when stored according to the product label. Store Sonora Herbicide in the original container in a cool, dry storage area. |
Yield | A 32 ounce bottle of Sonora can treat up to 64,000 sq. ft. when applied at a rate of 0.5 oz per 1,000 square feet. |
Use Sites | Outdoors |
Time to Kill | Sonora Herbicide Herbicide begins to kill target weeds within 3 to 5 days after contact. It can take up to several weeks for complete control all depending on the treatment area, targeted plants, and application method. |
Comparable Products | Transline Herbicide |
Incompatible Home Siding | Brick, Hardie Plank, Stone Veneer, Wood, Vinyl |
EPA Registration # | 81927-69 |
It said to only use this from June through August. It's not as effective when the kudzu isn't actively growing. For kudzu going into dormancy, it's best to follow the shoots to the mother vine, cut or slash the root ball and treat the wounds with Triclopyr diluted 50% with ionic surfactant and no water. This two pronged approach gives me hope for eradicating kudzu on 4 acres in the near future! I will be sizing up to one gallon from 32 oz in 2019! Great service and value plus fast shipping from Solution Stores as always.
Restricted Use | No |
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Shipping Restrictions | AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA |
Availability | Online |
Signal Word | CAUTION |
Keith's Pro Tip | "For the best results when applying Sonora, have a minimum of 3 to 4 days of vegetation growth, to ensure there is enough leaf surface for the herbicide to penetrate." |
Target Pests Multi | Ageratum, Annual Sowthistle, Artichoke Thistle, Beggarweed, Black Medic, Buffalobur, Bull Thistle, Canada Thistle, Chamomile Mayweed, Coffeeweed, Common Burdock, Common Cocklebur, Common Groundsel, Common Ragweed, Common Sunflower, Common Teasel, Curly Dock, Dandelion, Diffuse Knapweed, Eastern Black Nightshade, False Chamomile, Fireweed, Giant Ragweed, Goatsbeard, Green Smartweed, Hairy Nightshade, Hawkweed, Hop Clover, Horseweed/Marestail, Italian Thistle, Jerusalem Artichoke, Jimsonweed, Kudzu, Ladysthumb, Lambert Locoweed, Marshelder, Meadow Salsify, Mimosa, Musk Thistle, Narrowleaf Hawksbeard, Orange Hawkweed, Oxeye Daisy, Perennial Sowthistle, Pineapple_Weed, Prickly Lettuce, Prickly Pear, Red Clover, Red Sorrel, Russian Knapweed, Sicklepod, Spotted Knapweed, Thickhead, White Clover, Wild Buckwheat, Wild Sunflower, Wisteria, Yellow Hawkweed, Yellow Starthistle, Acacias, Blackbrush, Catclaw Acacia, Cornflower, Dogfennel, Eastern Redbud, Granjeno, Guajillo, Locust, Mesquite, Twisted Acacia, Vetch |
Time to Kill | Sonora Herbicide Herbicide begins to kill target weeds within 3 to 5 days after contact. It can take up to several weeks for complete control all depending on the treatment area, targeted plants, and application method. |
Chemical Type | Herbicide |
Formulation | Emulsifiable Concentrate (EC) |
Application Methods | Broadcast Spray, Spot Treatment |
Product Drawbacks | Sonora Herbicide can affect susceptible broadleaf plants directly through foliage and indirectly by root uptake from treated soil. Therefore, do not apply this product directly to, or allow spray drift to come in contact with, vegetables, flowers or other |
Active Ingredient | Clopyralid- 40.9% |
Application Equipment | Backpack Sprayer, Gloves, Pump Sprayer, Respirator Mask, Spray Rig |
Mix Rate | For general applications made with a handheld pump sprayer mix 3/32 fl. oz. (2.8 mL) to 1/4 fl. oz. (7.3 mL) of Sonora Herbicide per 1 gallon of water. For more specific application rates please refer to the label. |
Low Use Rate | 0.09 fl. oz./1,000 sq. ft. |
High Use Rate | 0.25 fl. oz./1,000 sq. ft. |
Use Sites | Outdoors |
Yield | A 32 ounce bottle of Sonora can treat up to 64,000 sq. ft. when applied at a rate of 0.5 oz per 1,000 square feet. |
EPA Registration No. | 81927-69 |
Shelf Life | Sonora Herbicide will last for up to 1 to 2 years when stored according to the product label. Store Sonora Herbicide in the original container in a cool, dry storage area. |
Comparable Products | Transline Herbicide |
Children or pets? | No |
Property Characteristics | None |
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Q:Do you currently have this in stock? Is it safe to use for broadleaf control on tillage radish? Will winter rye grow if sown 2 weeks after this is sprayed?8/7/22A:Do not apply Sonora (Clopyralid 3 Herbicide) directly to, or allow spray drift to come in contact with, vegetables, flowers, tomatoes, potatoes, beans, lentils, peas, alfalfa, sunflowers, soybeans, safflower, or other desirable broadleaf crops or ornamental plants. For specific sown application rates, it would be best to speak with the manufacturer, ALLIGARE, as this is not directly stated on the product label. https://alligare.com/contact-us/#:~:text=334%2D741%2D9393%20or%20888%2DALLIGARE&text=To%20navigate%2C%20press%20the%20arrow%20keys.
Amanda Chavez
8/8/22Certified Buyer -
Q:Can this be used for broadleaf control on rape & turnip fall planting? What is the recommended ounces per acre? If used on rape & turnip planting this fall for broadleaf control, would there be residual that would effect a buckwheat planting next spring & winter rye/field pea planting next fall.8/7/22A:Do not apply Sonora (Clopyralid 3 Herbicide) directly to, or allow spray drift to come in contact with, vegetables, flowers, tomatoes, potatoes, beans, lentils, peas, alfalfa, sunflowers, soybeans, safflower, or other desirable broadleaf crops or ornamental plants.
Amanda Chavez
8/8/22Certified Buyer -
Q:Will this product kill Canada thistle?7/30/22A:Yes extremely effective. In some cases two applications may be needed
Michael Strobel
8/1/22Certified Buyer -
Q:Is this safe to use with grazing cattle on the property?6/2/22A:There are no grazing or haying restrictions following Alligare Sonora Herbicide applications when used at labeled rates except for export hay from California, Nevada, Oregon and Washington. Do not transfer livestock from treated grazing areas, or from feeding of treated hay, to sensitive broadleaf crop areas without first allowing 3 days of grazing on an untreated pasture (or feeding of untreated hay). If livestock are transferred within less than 3 days of grazing untreated pasture or eating untreated hay, urine and manure may contain enough clopyralid to cause injury to sensitive broadleaf plants
Amanda Chavez
6/3/22Certified Buyer -
Q:is this safe for strawberries ?5/26/22A:No
Deloy Oberlin
6/26/21Certified Buyer -
Q:Does this product kill fleabane?1/28/22A:Sonora (Clopyralid 3 Herbicide) is not labeled to treat fleabane. We recommend using 2,4-D Amine Selective Post-Emergent Herbicide, which is labeled to treat fleabane. https://www.solutionsstores.com/2-4-d-amine-selective-weed-killer
Amanda Chavez
1/28/22Certified Buyer -
Q:Do I need a license to buy Sonora?6/3/21A:No. This chemical is not a restricted use product.
Myron Martin
6/3/21Certified Buyer -
Q:Will this kill yucca?12/20/20A:Don’t know.I use mine for kudzu
Stan Schmidt
1/5/21Certified Buyer -
Q:reccomended dose per ha ?7/19/18A:Label says ½ to 2/3 pints to the acre, which would be 16 or less acres per the gallon.
Dennis Gibbs
7/19/18Certified Buyer -
Q:Does Clopyralid 3 eradicate mugwort, Artemesia regalis?6/18/18A:I was asked to respond to this and will say; if it's not mentioned on the label, probably not. It's very selective and not at all like 2,4-D.
Dennis Gibbs
6/18/18Certified Buyer