NUTRIENT SUFFICIENCY RANGES FOR WHEAT
(Upper leaves sampled prior to initial bloom)

Nutrient Element Unit Sufficient
Nitrogen (N) % 2.59-4.00
Phosphorus (P) % 0.21-0.50
Potassium (K) % 1.51-3.00
Calcium (Ca) % 0.21-1.00
Magnesium (Mg) % 0.16-1.00
Sulfur % 0.21-0.40
Manganese (Mn) ppm 16-200
Iron (Fe) ppm 11-300
Boron (B) ppm 6-40
Copper (Cu) ppm 6-50
Zinc (Zn) ppm 21-70
Plant part to sample

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Corn, Soybean, Wheat, and Alfalfa Field GuideBulletin 827