Answer: Soybeans are big users of potash. A 60 bu/A soybean crop removes 87 lbs K20 which is equal to 145 lbs potash (0-0-60) per acre. A 200 bu/A corn crop removes 58 lbs K20 which is equal to 97 lbs of potash. So yes, soybeans need potash as well as does corn.

How much potash does soybeans need?

Because soybeans remove 1.15 pounds of K2O per bushel, the maintenance application rate for a 60-bushel per acre soybean crop is 69 pounds of actual K2O or 115 pounds of muriate of potash (0-0-60) per acre.

What nutrients do soybeans need?

Soybeans require 14 mineral nutrients for growth: nitrogen (N), phosphorus (P), potassium (K), sulfur (S), calcium (Ca), magnesium (Mg), copper (Cu), iron (Fe), manganese (Mn), zinc (Zn), boron (B), chloride (Cl), molybdenum (Mo) and nickel (Ni) to grow successfully.