Most spray amount info is in the Guide Category.
The Captan they listed is 50% WD, the 80 WDG you bought.
You would need to do the math from the label info of your product 
Most spray amount info is in the Guide Category.
The Captan they listed is 50% WD, the 80 WDG you bought.
You would need to do the math from the label info of your product