Our fertilization recommendation includes all the nutrient requirements the mint – spearmint and peppermint – needs during all the growth levels
Soil should be well drained
Soil fertility requirements before planting
| Nutrient | Fertility level required under drip irrigation | Fertility level required under sprinkler irrigation |
|---|---|---|
| N | 5 – 7 nitrate nitrogen | 5 – 7 nitrate nitrogen |
| P | 30 ppm (Olsen) | 40 ppm (Olsen) |
| K | 14 ppm (when extracting with CaCl2) or F= -3200 cal/mol | ΔF= -3000 cal/mol |
Fertilization requirements between harvests
| Nutrient | Nutrient rate required (should be low right after harvest and grow gradually parallely to plant growth) |
|---|---|
| N | 1 kg/ha for the first week after harvest, up to 4 kg/ha for the week before next harvest. Should total 80 kg/ha of N between harvests. In case of soilless culture the use of a high-N Poly-Feed Drip formula with ME is needed (e.g. 26-12-12 + 2MgO+ME). Apply 70 ppm N on the first week after harvest and increase it up to 120 ppm N for the week before next harvest. |
| P | Total 10 kg/ha of P2O5 (15 kg/ha of MAP) between harvests. |
| K | Total 40 kg/ha of K2O (87 kg/ha Multi-K) between harvests. |
