The amount of Q4 Plus Turf Herbicide you will need will depend on what and where you will be treating. The product label suggests using between 1.8-2.6 fl oz per one gallon to treat 1000 sq. feet.
We do not have a post-emergent herbicide that will contain all 4 of the active ingredients you mentioned. Without knowing what weeds are being targeted, it is hard to make a recommendation. In most cases, tank mixing two herbicides is allowed if permitted on the product labels. You would follow the most restrictive label in regards to tank mixing. Q4 Plus tends to be the most popular for broadleaf weed control in cool-season turf. Here are some other options.
QuickSilver Herbicide contains Carfentrazone-ethyl
Ferti-lome Weed Free Zone contains 2,4-D, mecoprop-p, dicamba and carfentrazone-ethyl.
E-2 Herbicide contains 2,4-D, Fluroxpyr, and Dicamba
Q4 Plus contains 2,4-D, Dicamba, Quinclorac and Sulfentrazone
Solitare Herbicide contains Quinclorac & Sulfentrazone.
Q4 Plus Turf Herbicide should not be applied over or near the base of a newly planted tree. We recommend to apply at least 5 feet outside the dripline.
Q4 Plus Turf Herbicide is not labeled for use on Centipede grass. It can cause Zoysia to become yellow.
Q4 Plus Turf Herbicide can be applied as broadcast twice a year with 30 days in between each application as directed on the label.
Yes, Q4 Plus Turf Herbicide can be used to control barnyardgrass in a Bermuda lawn.
Q4 Plus Turf Herbicide should not be used to treat weeds under the canopy or within the drip line of trees. Per the product label, this product cause injury to non-target plants if applied to foliage, stems, or roots.
Q4 Plus Turf Herbicide does not require the use of a surfactant.
Q4 Plus Turf Herbicide is not labeled to control dallisgrass. Please review our How to Get Rid of Dallisgrass Treatment Guide for information on eradicating this weed.
The product label for Q4 Plus Turf Herbicide states that you should not apply the product above 90 degrees. Although it does not give a specific temperature for being too cold, most herbicides should be applied between 65 degrees and 85 degrees, when the target weeds are actively growing.
Q4 Plus Turf Herbicide is a post-emergent herbicide, so it will only be effective on existing plants that are actively growing. You do not want to apply in the fall when fall is transitioning into winter when plants are not activelt growing because they will not be able to absorb the product. The best temperatures to apply in are between 55 degrees and 90 degrees. So now would be a great and safe time to apply.
Q4 Plus Turf Herbicide is a great product for spurge and states on the label: Foliar contact of sulfentrazone on emerged, susceptible weeds results in rapid dessication and plant tissue death. So you have to be sure to contact all parts of the spurge and other listed weeds
The application rate of Q4 Plus Turf Herbicide varies depending on what type of truf grass you have. Cool Season Grasses: 2.6 - 3 oz. per 1,000 sq. ft. (7 - 8 pints per acre) Warm Season Grasses: 1.8 - 2.6 oz. per 1,000 sq. ft. (5 - 7 pints per acre) Please let us know if you have any more questions.
The application rate of Q4 Plus Turf Herbicide varies depending on what type of turfgrass you have. Cool Season Grasses: 2.6 - 3 oz. per 1,000 sq. ft. (7 - 8 pints per acre) Warm Season Grasses: 1.8 - 2.6 oz. per 1,000 sq. ft. (5 - 7 pints per acre).
Per the product label for Q4 Plus Turf Herbicide you should delay application to grass seedlings until after the second or thrid mowing, or 28 days after emergence.
Q4 Plus Turf Herbicide will suppress Bahia in Bermuda grass.
Per the Q4 label: Application around a cistern or well may result in contanimation of drinking water or ground water.
Q4 Plus is not labeled to control deers tongue grass.
The only thing we are aware of to get rid of deer tongue grass is a non selective such as Roundup QuikPRO. Otherwise, we recommend contacting your local extension office to see if they know of anything else,
Per the Q4 Plus Turf Herbicide label for warm season grass you will apply 5 - 7 pints per acre.
As for the amount of water the label states the following and varies depending on the type of sprayer:
For Conventional Spray Equipment: 50 to 220 gal/acre
For Low Volume Spray Equipment: Equipment should be calibrated to apply at least 20 gallons per acre