It is a suitable compound fertilizer for soils that need nitrogen, phosphorus and potassium. 100 kg of this fertilizer contains 15 kg of nitrogen (N), 15 kg of phosphorus (P2O5) and 15 kg of potassium (K2O). A soil analysis should be conducted before using 15.15.15 compound fertilizer. After this analysis, it can be used if there is a need for phosphorus, nitrogen, potassium.