Southern Ag Surflan A.S. Herbicide is specially formulated to provide pre-emergent control of annual grasses and broadleaf weeds. It uses Oryzalin as its active ingredient which is effective in controlling annual grasses and broadleaf weeds such as barley, barnyardgrass, bluegrass, crabgrass, foxtail, panicum, ryegrass, bittercress, carpetweed, chickweed, groundsel, henbit, knotweed, pigweed, spurge, woodsorrel, and more. This surface-applied herbicide can be used on both turf and ornamentals as well as on non-bearing trees and vines, industrial sites, established warm season turf like Bahiagrass, Buffalograss, Bermudagrass, St. Augustine, Centipede, and Zoysia. It is guaranteed to last for up to 4 months at 1.5-ounce per 1,000 sq. ft. Available in 8 oz. and 2.5 gallon bottle.
Landscape ornamentals, non-cropland, non-bearing trees and vines, industrial sites, established warm season turf like Bahiagrass, Buffalograss, Bermudagrass, St. Augustine, Centipede, Zoysia
Safe to spray over-the-top of listed ornamentals in sufficient water to cover area. Rate: Ornamentals: 1.5 to 3 oz. per 1,000 sq. ft. Turf: 1 to 1.5 oz. per 1000 sq. ft. (Do not reseed for 90 – 120 days following application).
Areas to be treated should be free of emerged weeds. Weed residues, prunings and trash should be thoroughly mixed into the soil or removed prior to treatment. In field applications, the soil should be in good tilth and free of clods at the time of application.
Apply Surflan A.S. as a directed spray to the soil surface or over top of plants. Use only a properly calibrated, low-pressure herbicide sprayer that will apply the spray uniformly. Use screens no finer than 50 mesh in nozzles and in-line strainers. Apply the appropriate rate of Surflan A.S. as outlined in “Approved Uses” section of this label. In all cases, use sufficient water volume to obtain uniform coverage and deliver the desired rate of Surflan A.S. to the treated area. The volume of water used is not critical, as long as the desired rate of Surflan A.S. is delivered uniformly across the area treated. When calibrating, determine the volume of water delivered by the sprayer to a given area (1,000 sq ft, acre, etc.). Then mix the desired rate of Surflan A.S. in the amount of water required to cover the entire area to be treated. As the amount of water used (spray volume) decreases, the importance of accurate calibration and uniform application increases. Check the sprayer daily to ensure proper calibration and uniform application. Maintain continuous agitation from mixing through application. Avoid spray pattern skips and overlaps that may result in incomplete coverage or over-application.
Handheld or Backpack Sprayer Application:
The amount of water used to apply Surflan A.S. herbicide is not critical, but should be sufficient for uniform coverage of the target area. Calibrate by determining the volume of water required to treat 1,000 square feet.
Use this calibration volume to determine the amount of water and Surflan A.S. herbicide needed to treat the target area (see the following calibration example). Note: Sprayer calibration (volume of spray needed to treat 1,000 square feet) will vary with each individual operator.
Steps in Calibration:
Mark an area of 1,000 square feet (i.e. 20 by 50 feet or 25 by 40 feet).
Place the sprayer on a level surface and add water noting the final level of water in the spray tank.
Spray the marked area with sufficient volume of water to provide uniform coverage. Refill the sprayer to the same level as before measuring the amount of water added. The measured water added to the sprayer is the volume needed to cover 1,000 square feet.
Determine the application rate (fl. oz./1,000 sq. ft.) for Surflan A.S. from the Approved Uses section of this label.
To each volume of water used as measured in step 3, add the amount of Surflan A.S. as determined in step 4.
Example: if the sprayer used 2 gallons of water to cover 1,000 square feet and the desired application rate of Surflan A.S. is 3 fluid oz. / 1,000 square feet, then you would add 3 fluid ounces of Surflan A.S. to every 2 gallons of water to be used.