help convincing farmer

[SD51555]

I'd spread some white clover in early spring and then spread some gypsum (300 lbs/ac) on it. Clover will do better against the grass when it has adequate sulfate-sulfur available to it. Don't even soil test for it. The gypsum is cheaper than the soil test.

Secondary Plant Nutrients: Calcium, Magnesium, and Sulfur | Mississippi State University Extension Service

Calcium, magnesium, and sulfur are essential plant nutrients. They are called “secondary” nutrients because plants require them in smaller quantities than nitrogen, phosphorus, and potassium.

extension.msstate.edu