If applying Vectobal 12 at the rate of 1 pint per acre, how much would be needed for a 5-acre stretch of roadside ditches?

To determine the correct amount of Vectobal 12 needed for a 5-acre stretch when applying it at a rate of 1 pint per acre, it's essential to convert the units properly.

1 pint is equal to 1/2 quart. Therefore, applying 1 pint per acre means that for each acre, you would use 1/2 quart. For a 5-acre area, you would multiply the application rate by the number of acres:

5 acres x (1/2 quart per acre) = 2.5 quarts.

Thus, the total amount needed for the 5 acres is indeed 2.5 quarts. This calculation confirms that the choice indicating 2.5 quarts is the correct answer. It effectively illustrates how to convert the measurement and apply it to the area being treated.