Brian from Flower Mound, Tx writes
We are happy to assist you with your question, however we there are a few steps you need to take to make sure you are using the correct amount of product for your application.
When using a pre-emergent such as Prodiamine 65 WDG (Generic Barricade), there are going to be a few factors to determine how much product you need to use in your sprayer, mostly what kind of turfgrass you have and how large the treatment area is. You also want to take into consideration how many applications you are making per year so that you do not exceed the annual maximum rate for your kind of turfgrass.
For example, if you have Bermuda grass, the product label indicates that you can use a maximum of 0.83 oz per 1,000 sq ft per year (Table 1 on page 9). If you are making 2 applications per year, that would be 0.415 oz per 1000 sq ft per application. If you are using your 16 gallon tank to treat 16,000 square feet, then you are using 6.64 oz of Prodiamine 65WDG per tank.
While weighing a granule is the best way to insure you are using the correct amount of product, there is a volume chart on page 14 of the label. The 0.4 oz rate would be equivalent to 1.25 tablespoons per 1000 sq ft. So 1.25 Tbsp x 16 = 20 Tbsp or 1.25 Cups per 16 gallon tank in this example.
I hope this helps to clarify. Let us know if you have other questions anytime.
Answer last updated on: 11/15/2021
