YardChemicals

MilStop

https://s3.amazonaws.com/cdn.arbico-organics.com/downloads/milstop-tech-sheet.pdf

Based on 2.5 lbs per acre (low disease pressure or preventative treatment), it's pretty simple... 1 Tbl per gallon of water:

MilStopWaterSq Ft
1 Tbl1 gallon500
2 Tbl (or 1/8 cup)2 gallons1000
4 Tbl (or 1/4 cup)4 gallons2000

If additional disease control is needed, increase the application rate in the second week to 1.25 Tbl per gallon of water. Continue increasing the weekly application rate in 0.25 Tbl per gallon increments until desired disease control is obtained. Do not exceed 2 Tbl per gallon of water per week (equivalent to 5 lbs. per acre per week).

General Guide -- Scaling Down Pesticides for Home/Garden

https://www.uky.edu/Ag/Horticulture/masabni/PPT/herbicidecalc.pdf