Sulfentrazone 4SC Select, manufactured by Prime Source LLC, is a selective liquid herbicide designed to suppress germinating and emerged summer annual broadleaf and grassy weeds and winter annual annual broadleaf and grassy weeds.

This strong formulation offers 35 days of weed control due to its active ingredient Sulfentrazone 39.6%. This active ingredient will inhibit the enzyme required by plants in order to produce chlorophyll. Inhibiting this enzyme leads to decrease production of oxygen in plants which then disrupts the plants cellular membranes, resulting in cellular leakage and death ultimately resulting in the death of the targeted plant.

Sulfentrazone 4SC Select, has a selective mode of action which guarantees specific weeds like crabgrass will be eliminated without harming your desired foliage.

Tools Needed

In order to use Sulfentrazone 4SC Select, you will need a backpack sprayer, handheld pump sprayer, or spray rig for large applications.

How to Use

• Step 1: Determine how much Sulfentrazone 4SC Select to use by calculating the square footage of the treatment area. To find this, you will need to measure the length and width of the treatment site in length and multiply them together (length X width = square footage). For acreage, take the square footage and divide it by one acre 43,560 (square footage / 43,560 = acre). For cool-seasoned grasses, apply Sulfentrazone 4SC Select at 2 to 4 oz. per 10 gallons of water per acre. For warm-seasoned grasses use 6 to 8 oz. of product per 10 gallons of water per acre. You will need to apply a second application for cool-seasoned and warm-seasoned turf at the rate 4 to 6 oz. of product per 10 gallons of water per acre. Apply a maximum of 4 oz. of Sulfentrazone 4SC Select to creeping bentgrass. Do not apply more than 0.375 lbs. of product per acre per 12 month period. The 12 month period begins after first application.
• Step 2: In a sprayer of your choice, fill the tank with half of the required amount of water, and then add in the measured amount of Sulfentrazone 4SC Select, then fill with the remaining half of water. Close the top of the sprayer tank and shake the sprayer until it is evenly mixed together.
• Step 3: Spray the top and bottom leaves of your turf grass and newly emerged weed on a low-pressure spray. Spray to the point of leaves being wet, but not run-off. You may retreat dense weed populations when 35 days have passed from the first application. Second application for cool-seasoned grasses cannot exceed a total 8 oz. of product for the first and second application. For warm-seasoned grasses, you cannot use more than a total of 12 oz. of product for the first and second application.

Where to Use

Apply Sulfentrazone 4SC Select in established turfgrasses (seeded, sodded, or sprigged) within residential and commercial lawns, athletic fields, golf course fairways and roughs, commercial sod farms, right of ways, railroad yards, railroad crossings, railroad bridge abutments, highway, roadsides, pipeline, utility right of ways, guardrails, road shoulders, electric utility substations, pipeline pumping stations, around electric transmission towers, around distribution line poles and other areas where complete vegetation control is needed, industrial areas, fence rows, and other non-crop sites like production facilities, tank farms, storage areas, parking areas, lumber yards, airports, military installations, and along fence rows and similar non-crop sites.

Do not apply to ornamental beds, landscape ornamental plants, tees, putting greens on golf courses, or areas where animals graze.

When to Use

You can use Sulfentrazone 4SC Select during the early season of spring, late summer, or fall to treat non-emerged weeds or when weeds are still relatively young. Spray on warm days, when wind volumnes are low and rain is forecasted for 24 hours after application.

Sod production areas should be established for at least 3 months before being treated with Sulfentrazone 4SC Select.

Safety Information

Sulfentrazone 4SC Select is safe to use around children or pets when applied according to the product label instructions. Always wear the appropriate personal protective equipment (PPE) when mixing or applying this product.

Keep children, pets, and other individuals from reentering treated areas for at least 24 hours.

Special Considerations

St. Augustine grass and some varieties of bahiagrass, rough bluegrass, zoysiagrass, turf that has been stress-weakened can experience temporary discoloration when applied with Sulfentrazone 4SC Select.