Prime Source Prodiamine 4SC Select

Prime Source Prodiamine 4SC Select

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Product Overview

Prodiamine 4SC Select is an herbicide formulated as a pre-emergence solution that renders residual and enduring control of many broadleaf weeds and grasses by preventing or inhibiting growth, maturation, and development of freshly germinated weeds. Weed control is most efficient and effective when this formula is activated by at least half an inch of irrigation or rainfall or shallow incorporation of water at least 1 to 2 inches before weed roots and seeds germinate and within 2 weeks or 14 days following application. This low sustaining formula may be applied for control of some grasses and weeds within season-long. Compares to Barricade 4L.

Features and Specs

Active Ingredient Prodiamine 40.50%
Target pests Barnyardgrass, Annual Bluegrass (Poa annual), Carpetweed, Common Chickweed, Mouseear Chickweed (from seed), Crabgrass (Large, Smooth), Crowfootgrass, Woolly Cupgrass, Annual Foxtails, Goosegrass, Henbit, Itchgrass, Johnsongrass (from seed), Junglerice, Knotweed, Kochia, Common Lambsquarters, Panicum, (Texas, Fall, Browntop), Pigweed, Common Purslane, Florida Pusley, Rescuegrass, Shepherd’s Purse, Broadleaf Signalgrass, Persian Speedwell, Sprangletop, Prostrate Spurge, Witchgrass, Yellow Woodsorrel (from seed)
For use in Established Turf-grass: Sod Nurseries; Container, Field Grown, and Landscape Ornamentals; Conifer and Hardwood Seedling Nurseries; established Perennial and Wildflower Plantings; Non-Crop areas including managed right-of-way for transportation systems and utilities (including roadways, roadsides, railways, and equipment yards); facilities including substations, tank farms, pumping stations, parking and storage areas, and ungrazed fence rows; and Christmas tree farms
Application A minimum of 20 gallons per acre (0.5 gal./1,000 sq. ft.) of carrier (water and/or fluid fertilizer) using a calibrated, low-pressure sprayer with 50-mesh or coarser screens
A broadcast boom or handheld wand designed for herbicide or insecticide application will provide the best results
Select nozzle pressure and gallons to provide complete coverage
Pet safe Yes, if used as directed on Label
Formulation Professional Product
Group 3 Herbicide
Shipping Weight 25.20 lbs
Manufacturer Prime Source (Mfg. Number: PRO 4SC SELECT)
UPC 794504360066
EPA Registration 89442-26




Prodiamine 4SC SELECT is a pre-emergence herbicide that, when properly applied, will control certain grass and broadleaf weeds in established turfgrasses:

  • Golf courses excluding putting greens
  • Lawns
  • Sod Nurseries

The maximun amoung of Prodiamine 4SC SELECT that may be applied per year is given for each turfgrass species in the Annual Use Rates - Turfgrass section of product label.

For optimum weed control, Prodiamine 4SC SELECT should be activated by at least 0.5 inch of rainfall or irrigation before weeds germinate and within 14 days folloing application. See the map below for approximate crabgrass seed germination dates.



Golf Courses, Lawns, and Sod Nurseries

  • Do not apply Prodiamine 4SC SELECT to areas where dichondra, colonial bentgrass, velvet bentgrass or annual bluegrass (Poa annua) are desirable species.
  • Do not cut (harvest) treated sod before 90 days after application. To avoid turfgrass injury, do not apply to newly set sod until the sod has rooted and esposed edges have filled in.
  • Do not apply Prodiamine 4SC SELECT to turf stressed by conditions such as drought, low fertility, or pest damage.
  • Do not disturb the herbicide barrier with cultural practices such as disking as reduced weed control can occur.
  • Do not apply Prodiamine 4SC SELECT to golf course putting greens.
  • If you consistenly mow creeping bentgrass at a height or less than 0.5 inch do not apply Prodiamine 4SC SELECT.

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