Arely from Enid, Oklahoma writes
How much water you will use to apply a pre-emergent herbicide like kes Sandbur and Crabgrass Preventer is not as important as using the correct amount of herbicide per 1000 sq/ft per the product label. This is going to be watered into the soil to be activated as well. Depending on your turf type and instructions on the Product Label, you can use 1.1 to 1.6 fl oz per 1000 sq ft you are treating for most applications.
We have a video here to help you with calibrating your sprayer if needed.
https://youtu.be/oMAZxkiEJFE
Answer last updated on: 03/30/2020