The mixing ratio of Prodiamine 65 WDG is 0.36-0.83 oz. per 1000 square feet for St. Augustine grass. Be sure the irrigate the area after the product has been applied to activate it.
Prodiamine 65 WDG can be used to prevent foxtail but you will have to wait at least 4 months before reseeding, as is the case with all pre-emergents for this weed. Quinkill Max could be tank mixed with 2,4-D as directed on the product label.
If you are going to be planting in the area you would like to use Prodiamine 65 WDG it would be best to plant first then apply the product so that you are not disturbing the barrier in the soil but applying before planting. It will only prevent seeds from germinating and is actually labeled to be used in landscape planting. The label states: Delay application to newly transplanted ornamentals until soil has settled around transplants.
You could mix a post-emergent herbicide or different pre-emergent herbicide with Prodiamine 65 WDG as long as the use sites are compatible, you are not using the same active ingredient in multiple products, and you calibrate the products to be used together. Any time you are mixing products together for the first time, it is recommend to perform a small test mixture first to ensure compatability. Keep in mind that post-emergent control (killing existing weeds) will be most effective when the weeds (in this case, dandelion) are young and actively growing. Another option would be to use a different pre-emergent, such as Dimension 2EW, which also lists Dandelion on the label.
We would need to know more information about your situation in order to recommend a post-emergent product for dandelion, such as where you want to use it (turf, ornamentals, etc.) and how much area you have to cover.
Prodiamine 65 WDG is labeled to be applied to established Kentucky Bluegrass turf prior to the germination of crabgrass and foxtail. Please refer to the product label for more specific details on mixing and application instructions.
Prodiamine 65 WDG (Generic Barricade) can be applied to your lawn after the second or third mowing to prevent listed weeds from germinating. Please refer to the product label instructions for more details on safety of the application.
Yes, Prodiamine 65 WDG (Generic Barricade) is safe for pets as long as it is used as directed. Pets do need to be kept out of the area while the product is being applied, but can be allowed to re-enter the area once the product is dry (usually withn a few hours).
Calinbration does not refer to the spray pattern used to apply herbicides. Although, we would recommend using a mist stream. You would calibrate by determining the volume of water required to treat 1,000 square feet. Use this calibration volume to determine the amount of water and Prodiamine 65 WDG herbicide needed to treat the target area (see the following calibration example).
Note: Sprayer calibration (volume of spray needed to treat 1,000 square feet) will vary with each individual operator.
Steps in Calibration:
1. Mark an area of 1,000 square feet (i.e. 20 by 50 feet or 25 by 40 feet).
2. Place the sprayer on a level surface and add water noting the final level of water in the spray tank.
3. Spray the marked area with a sufficient volume of water to provide uniform coverage. Refill the sprayer to the same level as before measuring the amount of water added. The measured water added to the sprayer is the volume needed to cover 1,000 square feet.
4. Determine the application rate (fl. oz./1,000 sq. ft.) for Prodiamine 65 WDG from the Recommendations section of this label.
5. To each volume of water used as measured in step 3, add the amount of Prodiamine 65 WDG as determined in step 4.
Example: If the sprayer uses 2 gallons of water to cover 1,000 square feet and the desired application rate of Prodiamine 65 WDG is 0.185 - 0.055 oz/1,000 square feet, then you would add 0.185 - 0.055 oz of Prodiamine 65 WDG to every 2 gallons of water to be used."
The first thing you need to know when using an herbicide such as Prodiamine 65 WDG is that the exact amount of water you dilute it with is not important. It is only important to make sure you are using the correct amount of product per 1,000 sq ft of lawn. Use too much and you risk damaging your lawn, use too little and you will not get adequate results. You will need to use 0.185-0.55 oz per 1,000 sq ft . To decide how much water you want to use, you should mark a 1,000 sq ft area, fill your sprayer with water ONLY, and start walking and spraying just as if you were doing the actual application of herbicide. When you are done walking and spraying the 1,000 sq ft area note how much water it took you to spray that area, and that is the amount you will want to mix 0.185-.55 oz of product with for each 1,000 sq ft area that needs to be treated.
