Since its a pre emergent spot spraying is probably not mentioned. We spray it at 2.6 qts per acre which would be 1.9 oz per 1000 sq ft. or aprox. 1.9 oz per gal out of a backpack. That is what is called the split rate, we do it twice at a 6-8 week interval. That is in Oklahoma though so you may need to see if thats the same where you are.