NUTRIENT SUFFICIENCY RANGES FOR SOYBEANS

(Upper fully developed leaf sampled prior to initial flowering)

Nutrient Element Unit Sufficient
Nitrogen (N) % 4.25-5.50
Phosphorus (P) % 0.30-0.50
Potassium (K) % 2.01-2.50
Calcium (Ca) % 0.36-2.00
Magnesium (Mg) % 0.26-1.00
Sulfur % 0.21-0.40
Manganese (Mn) ppm 21-100
Iron (Fe) ppm 51-350
Boron (B) ppm 21-55
Copper (Cu) ppm 10-30
Zinc (Zn) ppm 21-50
Molybdenum (Mo) ppm 1.0-5.0

Plant part to sample for nutrient sufficiency range.


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