The Quali-Pro Prodiamine 4L Pre-Emergent Herbicide rate used is not set per gallon as the amount of water used is not as important as making sure to apply the correct amount of product over an area. You would use 0.23 to 1.1 fl oz per 1000 sq ft, which is normally 1 gallon water, depending on your lawn type. Please refer to the product label for complete instructions.
The rates for Prodiamine 4L Herbicide will vary depending on the type of turfgrass you are treating, desired length of weed control, and how many applications you plan to make per year. You can apply a maximum of 10 oz – 48 oz per year per Acre, depending on your turfgrass. You can view application charts beginning on page 5 of the product label here.
Prodiamine 4L Herbicide, Resolute 4FL Herbicide, or Barricade 4FL Herbicide would be the liquid prodiamine we carry. They all contain the same percentage of active.
When applying a pre-emergent like Quali-Pro Prodiamine 4L Pre-Emergent Herbicide, the rule of thumb is by September 15th. However, keep in mind that if you are seeding in the same season you would want to either seed first, then apply the pre-emergent at least 6 weeks later toa llow the lawn to establish. Or seed at least 3 months after the pre-emergent has been applied.
If the grass is completely 100% for sure dormant you should be able to treat any actively growing weeds with a glyphosate product like GlyPhoSel Pro along with the pre-emergent.
How much Quali-Pro Prodiamine 4L Pre-Emergent Herbicide makes depends on the dilution rate used, also the rate used is not set per gallon as the amount of water used is not as important as making sure to apply the correct amount of product over an area. You would 0.23 to 1.1 fl oz per 1000 sq ft depending on your lawn type. Please refer to the product label for complete instructions.
The shelf life of Quali-Pro Prodiamine 4L Pre-Emergent Herbicide if stored in a cool dry area is 3-5 years.
Please refer to the guidelines on Page 9 of the Quali-Pro Prodiamine 4L Pre-Emergent Herbicide product label for specific application instructions through injection systems. If these instructions can not be followed with your system, we recommend that the product is applied with a sprayer. The amount of water used is not as important as making sure to apply the correct amount of product over an area. You would 0.23 to 1.1 fl oz per 1000 sq ft depending on your lawn type. Please refer to the product label for complete instructions.
Quali-Pro Prodiamine 4L Pre-Emergent Herbicide can be applied to the following areas listed on the product label: established Cool & Warm-Season turf-grasses (excluding golf course putting greens), Lawns and Sod Nurseries, Ornamentals and Christmas Tree Farms.
Prodiamine 4L Herbicide is a pre-emergent herbicide that will not kill existing weeds or Bermuda grass. It is applied to established Bermuda turf to prevent germination of listed weeds.
You can use Prodiamine 4L Herbicide a couple of days after the fertilizer.
