Uni Professional P21 contains 8% Nitrogen (N) and 21% Phosphorus (P2O5) as effective substances. With its high phosphorus content as well as urea nitrogen, it can be used for subsoil fertilization of all field and garden (vegetable · fruit) plants.
Uni Professional P21 (8-21-0)
Guaranteed Content (% w/w)
| Component | Amount |
| Total Nitrogen (N) | 8% |
| Urea Nitrogen (N) | 8% |
| Phosphorus Penta Oxide (P2O5) soluble with mineral acids | 21% |
| Phosphorus Penta Oxide (P2O5) soluble in 2% Formic Acid | 14% |
Areas of Use and Dosage — Applied to the Soil Before Planting
Method of application: soil application (kg/da) unless otherwise noted.
| Plant | Method of Application |
| Hard and Soft Core Fruit Trees (according to age) | 1–4 kg / tree |
| In All Greenhouse Vegetables | 60–80 |
| Outdoor Vegetables and Leafy Winter Vegetables | 40–50 |
| In All Industrial Plants | 50–70 |
| In All Grains and Green Fields | 30–40 |
| Watermelon, Melon, Carrot, Radish, Strawberry | 40–50 |
| Grape (Vineyard) | 60–80 |
| Potatoes | 100–120 |
| Banana | 120–150 |
| Hazelnut | 1–4 kg / plot |
| Tea | 40–50 |