Can any body tell npk of super phosphate?
NPK rating (or N-P-K) is used to label fertilizer based on the relative content of the chemicals nitrogen(N), phosphorus(P), and potassium(K) that are commonly used in fertilizers. Except for the N number, the numbers for P and K do not reflect the amount of elemental phosphorus and potassium in the fertilizer. Rather they represent the amount of oxide in the form of P2O5 and K2O that would form if all the elemental phosphorus and potassium were oxidized into this form. Method for converting an N-P-K value to an actual composition- The factors for converting from P2O5 and K2O values to their respective P and K elemental values are as follows: P2O5 consists of 57.4% oxygen and 43.6% elemental phosphorus. The percentage([mass fraction]) of elemental phosphorus is 43.6% so P= 0.43 x P2O5 K2O consists of 17% oxygen and 83% elemental potassium. The percentage (mass fraction) of elemental potassium is 83% so K = 0.83 x K2O Nitrogen values represent actual nitrogen content so these numbers do
