https://www.uky.edu/Ag/Horticulture/masabni/Publications/HO-83.pdf
The above pdf gives weight of Sovran 50WG per teaspoon and teaspoon measurements per gallon. By their numbers per acre translates to 400 gallons.
You know you're going to get those replies anyway. Like cooking bacon in a houseful of vegans. They're angry (poor diet) and opinionated (cranky from malnourishment) anyway, let alone when you remind them how much they miss bacon.
typical mikell