Comparisons of Manure, Compost, and Commercial Fertilizers

Nutrient Dry Weight Nitrogen (N) <1% up to 4.5% Potassium (K 2 0) 0.5% to 1% Phosphorus (P 2 0 5) 0.8% to 1% Calcium (Ca) 2% to 3% Magnesium (Mg) 2% to 3% Source: B.C. Agricultural Composting Handbook. 1998. Nutrient concentrations in finished compost will vary depending on type of manure, plant residue or bio-solids used.

  Plants, Concentrations, Nutrient, Nutrient concentrations