What is the active ingredient
All fertilizer doses are calculated per active ingredient.
Here are useful formulas for converting various elements into active ingredients:
- ➡️ Phosphorus (P) = phosphorus pentoxide (P2O5) × 0,436
- ➡️ Potassium (K) = potassium oxide (K2O) × 0,830
- ➡️ Calcium (Ca) = calcium oxide (CaO) × 0,715
- ➡️ Magnesium (Mg) = magnesium oxide (MgO) × 0,603
- ➡️ Sodium (Na) = sodium oxide (Na2O) × 0,742
- ➡️ Sulfur (S) = sulfur trioxide (SO3) × 0,400
Remember that only the following elements need to be calculated:
P- P2O5
K-K2O
Ca-CaO
Mg-MgO
S-SO3