NUTRIENT SUFFICIENCY RANGES FOR ALFALFA


(Top 6 inches sampled prior to initial flowering)

Nutrient Element Unit Sufficient
Nitrogen (N) % 3.76-5.50
Phosphorus (P) % 0.26-0.70
Potassium (K) % 2.01-3.50
Calcium (Ca) % 1.76-3.00
Magnesium (Mg) % 0.31-1.00
Sulfur % 0.31-0.50
Manganese (Mn) ppm 31-100
Iron (Fe) ppm 31-250
Boron (B) ppm 31-80
Copper (Cu) ppm 11-30
Zinc (Zn) ppm 21-70
Molybdenum (Mo) ppm 1.0-5.0

Plant part to sample for nutrient sufficiency range.


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Corn, Soybean, Wheat, and Alfalfa Field GuideBulletin 827