Sonora (Clopyralid 3 Herbicide)

Sonora Herbicide (formerly named Clopyralid 3), manufactured by Alligare, is an effective post-emergent herbicide that controls difficult broadleaf weeds and brushes to clear various terrains in a couple of days after application.

This effective emulsifiable concentrate contains the powerful active ingredient clopyralid 40.9%, which is used 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

You will need a backpack sprayer, handheld pump sprayer, or skid sprayer. The skid sprayer is suggested for extensive rangelands.

We suggest a handheld or backpack sprayer when making smaller applications or spot treatments.

How to Use

• Step 1: Determine how much Sonora you will need by measuring the square footage of the treatment area. To do this, you will need to measure the length and width of the target area in feet and multiply them together (length X width = square footage). For acreage, take the square footage and divide it by one acre (square footage / 43,560 sq. ft. = acres). 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, 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 cover the targeted vegetation evenly.

Where to Use

Sonora Herbicide is for use on non-cropland, non-turf, and non-residential areas. It is formulated to be used on rangelands, job sites, construction sites, storage sites, along roadways, and other rights-of-way. It is ideal for use in areas that need to be bare ground.

When to Use

The ideal time to apply is during healthy growth or flowering seasons. Sonora should be applied no sooner than 3 to 4 days before unwanted vegetation emerges from the ground so the product can contact the leaf tissue for the best results.

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 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 is 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.