Imagine you have a 300-gallon sprayer calibrated to 50 GPA, and want to apply 0.015 lbs Mn per M (1000 ft2 ) to 4.2 acres of perennial ryegrass baseball fields. If you wanted to employ a 10% spray buffer, how much manganese chloride (MnCl 2 ) would you mix in with how many gallons of water?