MSO oil improves the performance of such herbicides as 2,4-D, brush killers, Trimec, Round-Up, Diquat, Reward, and others. This surfactant provides a more uniform coverage by reducing the surface tension of the spray droplets .
For most herbicides, use 1 - 2 pints per 100 gallons of spray (1 teaspoonful per gallon). These include Amine, 2,4-D, Brush Killers, Diquat R, Illloxan, Image R, and others.
For Round-up, use 2 quarts per 100 gallons of spray (1 Tablespoonful per gallon). For MSMA herbicides, use: 1 - 2 quarts per 100 gallons of spray (1 Tablespoonful per gallon)