Pre-emegent broadleaf and grassy weed control in established turfgrasses (excluding golf course putting greens), lawns and sod nurseries, ornamentals and Christmas tree farms.
A selective preemergence herbicide for control of grass and broadleaf weeds in established turfgrasses (excluding golf course putting greens), lawns and sod nurseries, ornamentals, and Christmas tree farms.
Formulation and Mode of Action
Quali-ProŽ Prodiamine 4L is a liquid herbicide containing the active ingredient prodiamine, a member of the dinitroaniline family of herbicides. Each gallon contains 4 pounds active ingredient. Quali-Pro Prodiamine 4L is used for pre-emergent control of grasses and broadleaf weeds. The active ingredient inhibits mitotic processes in plants and controls susceptible weeds by preventing growth and development of newly germinated weeds. Weed control is most effective when Quali-Pro Prodiamine 4L is activated by at least 0.5 inches of rainfall or irrigation or shallow incorporation (1 to 2 inches for non-turf applications) before weed seeds germinate and within 14 days following application.
Uses and Application
Apply Quali-Pro Prodiamine 4L for selective preemergence control of many grass and broadleaf weeds in the following areas:
1) established turfgrasses (excluding golf course putting greens)
2) lawns and sod nurseries
3) container, field-grown, and landscape ornamentals
4) established perennial and wildflower plantings
5) Christmas tree farms.
Apply Quali-Pro Prodiamine 4L in a minimum of 20 gallons/acre (0.5 gallons /1000 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 gallonage to provide complete coverage.
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For St. Augustine grasses apply Prodiamine 4L at an initial rate of 16-32 ounces per acre. The maximum rate of Prodiamine 4L Herbicide is 0.5 to 1.1 ounces per 1,000 square feet or at 21-48 ounces per acre. For other grass application rates refer to label above.
Prodiamine 4L can be applied more than once a year as long as the total amount does not exceed the maximum application rate for each turf species.