If you have a 40 gallon sprayer, this is actually the ideal amount of water volume to use for most post emergent applications such Q4 Plus Turf Herbicide per acre. This gives you close to 1 gallon of finished solution per 1000 sq/ft of surface area which is the average most products and volumes should cover. You can either adjust the nozzles to allow for a heavier output as you pull, slow your speed so that you are not pulling as quickly and can allow a heavier water volume to be put out over a smaller area, or you can make essentially a double pass over the entire lawn until the tank is empty. We would recommend typically the first or second option, as the risk with double passes on the lawn is uneven distribution of the chemical and more chance of lawn burn if concentrations are high in certain spots.
No, Q4 Plus Turf Herbicide is not labeled to control or kill goosegrass. Pylex is labeled to treat goosegrass and can be safely applied to Kentucky Bluegrass. Pylex Herbicide is mixed at 0.023 - 0.046 oz. per 1,000 sq. ft. Please see the label for complete application instructions.
Q4 Plus is labeled to be applied to zoysiagrass at the rate of 1.8 to 2.6 fl oz per 1000 sq ft (5 to 7 pints/acre).
The product label advises that tolerant turfgrass species may exhibit temporary turf injury and temporary yellowing on fine fescues, bermudagrass and zoysiagrass. Please review the Bermudagrass & Zoysiagrass information on page 4 of the product label for more information.
Q4 Plus Turf Herbicide is labeled for yellow nutsedge and follow up treatments may be needed. Please refer to the chart on page 4 of the product label for timing, conditions and rates for application.
Please take a moment to review our Nutsedge Treatment Guide for more information.
The rate amount of Q4 Plus Turf Herbicide needed is going to depend on the type of turfgrass you have (Cool/Warm Season) and also how many square feet the 40 gallon tank sprayer will cover evenly and thoroughly.
For Cool Season Grasses, the rate is 2.6 - 3 oz. per 1,000 sq. ft. (7 - 8 pints per acre) and Warm Season Grasses, the rate is 1.8 - 2.6 oz. per 1,000 sq. ft. (5 - 7 pints per acre)
Please view the product label for more information.
Since wild strawberry weeds are more susceptible to herbicides when they are actively growing, it is better to wait until temperatures cool off—with mid-spring or early fall applications being the best time.
Q4 Plus Turf Herbicide is mixed at 1.8 to 2.6 fl oz per gallon of water per 1000 sq ft for wild strawberry. Be sure you are evenly and thoroughly spraying the wild strawberry foliage and using the 1 gallon mixed solution per 1000 sq ft area. Do not mow the lawn 2 days before or 2 days following the application.
Please view the full product label for more information.
Q4 Plus Turf Herbicide is safe for use on established Kentucky bluegrass and on fine fescue when it is part of a mix. If you have fine fescue that is not mixed with the bluegrass, then there may be some temporary discoloration. You should not add a surfactant to Q4 Plus Herbicide since this may cause extra sensitivity on the desirable grass. Please refer to the product label for complete application instructions.
Q4 Plus Turf Herbicide will not kill armyworms. It is a selective post-emergent herbicide that targets listed weeds in established listed turfgrasses as directed.
For Armyworms, please review the Armyworms Product Page for liquid and granule insecticide options and the Armyworm Treatment Guide for more information.
Q4 Plus Turf Herbicide is not labeled for use on Timothy grass, and also cannot be used in any grazing areas or on hay that would be consumed by animals. This is only for residential lawn and certain commercial area applications. Unfortunately there are no sedge products that are labeled for grazing or hay areas that we are aware of on the market. It often must be spot treated repeatedly with roundup or similar material.
Q4 Plus can be used on both cool and warm season turfgrasses (bermuda and zoysiagrass only) For Bemuda and Zoysiagrass, the mix rate is 5 to 7 pints/acre or 1.8 to 2.6 fl oz per 1000 sq ft.
Please view the full product label for more information.
Q4 Plus Turf Herbicide is safe to use on tall fescue when applied as directed on the product label. For tall fescue, apply 2.6 fl oz to 3 fl oz per 1000 sq ft (7 to 8 pints per acre).
Please view the product label for more information.
Q4 Plus Turf Herbicide is labeled for cool season turfgrass such as Fescue, Kentucky Bluegrass, Perennial Ryegrass, Rough Bluegrass (poa trivialis) and Annual Bluegrass at the rate of 7 to 8 pints/acre or 2.6 to 3 fl oz per 1000 sq ft.
Per the product label, the maximum number of broadcast treatments is 2 application per year with a minimum of 30 days between applications and the maximum rate per acre in a single application is 8 pints per acre.
Q4 Plus Turf Herbicide has a musty odor.
Q4 Plus Turf Herbicide should be applied between 65 and 85 degrees for best results. The product label does state that you should not apply the product above 90 degrees but does not have a minimum temperature listed.
In cooler weather, herbicides can take longer to absorb and uptake in weeds so complete die off may take longer than in warmer temperatures.
Q4 Plus Turf Herbicide can be safely applied to well established zoysiagrass which is actively growing, but you should expect temporary discoloration. Please refer to table 3 for specifics on treatments to zoysiagrass found on page 4 of the product label, and use as directed.
Q4 Plus Turf Herbicide is labeled for those weeds you’re targeting and safe for bermudagrass. This can be applied to sports turf, golf courses, commercial/residential lawns, cemeteries and public parks also. Review the product label for more information.
Due to the sensitivity of application sites such as golf courses, playgrounds, sports fields, etc, we are not able to advise on specific applications regarding treatment.
Please consult with your local Sports Field Superivisor, County Extension Office or the manufacturer PBI Gordon directly at 816-421-4070 for detailed information regarding your treatment.
Q4 Plus Turf Herbicide is not labeled for Doveweed. You may use a product like BlindSide to control Doveweed. This product is a very effective post-emergent herbicide. Please review the product label before making your application.