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High-solubility water-soluble NPK range

K Sol

K Sol is a range of high-solubility water-soluble NPK fertilisers for fertigation of all crops, in the open field and under cover. Three grades are targeted at crop stage, enriched with EDTA-chelated trace elements, and dissolve in all fertigation systems.

  • NPK 20-20-20 + TE: balanced grade (pH 5.3 at 1% and 870 µS/cm at 1‰)
  • NPK 9-50-9 + TE: phosphorus-rich, for the post-transplanting and pre-flowering phase
  • NPK 12-6-36 + TE: potash-rich, a ripening inducer
  • EDTA-chelated trace elements (iron, manganese, zinc, copper) plus boron and molybdenum, to prevent trace-element deficiencies
  • High solubility: dissolves completely in any fertigation system
Download 2026 Catalogue

How to use

Form: Water-soluble powder, 25 kg bags

Application: Fertigation, 25–50 kg/ha per application; indicative rates, to be adapted to the crop, growth stage and water analysis

Crops: All crops, in the open field and under cover, including hydroponics

Crop / UseApplication rate
NPK 20-20-20 + TE – fertigation, all crops, balanced grade25–50 kg/ha per application
NPK 9-50-9 + TE – fertigation, post-transplanting / pre-flowering phase25–50 kg/ha per application
NPK 12-6-36 + TE – fertigation, ripening inducer25–50 kg/ha per application

Product composition

NPK 20-20-20 – Total nitrogen (N)
20%
NPK 20-20-20 – of which ammoniacal nitrogen
3%
NPK 20-20-20 – of which ureic nitrogen
17%
NPK 20-20-20 – Phosphorus pentoxide (P₂O₅)
20%
NPK 20-20-20 – Potassium oxide (K₂O)
20%
NPK 20-20-20 – pH (1% solution)
5.3
NPK 20-20-20 – Conductivity (1‰)
870 µS/cm
NPK 9-50-9 – Total nitrogen (N)
9%
NPK 9-50-9 – of which ammoniacal nitrogen
9%
NPK 9-50-9 – Phosphorus pentoxide (P₂O₅)
50%
NPK 9-50-9 – Potassium oxide (K₂O)
9%
NPK 9-50-9 – pH (1% solution)
4.45
NPK 9-50-9 – Conductivity (1‰)
1235 µS/cm
NPK 12-6-36 – Total nitrogen (N)
12%
NPK 12-6-36 – of which ammoniacal nitrogen
3.5%
NPK 12-6-36 – of which ureic nitrogen
8.5%
NPK 12-6-36 – Phosphorus pentoxide (P₂O₅)
6%
NPK 12-6-36 – Potassium oxide (K₂O)
36%
NPK 12-6-36 – Sulphur trioxide (SO₃)
7%
NPK 12-6-36 – pH (1% solution)
4.64
NPK 12-6-36 – Conductivity (1‰)
1565 µS/cm
Boron (B) – all grades
0.01%
Copper (Cu) EDTA-chelated – all grades
0.002%
Iron (Fe) EDTA-chelated – all grades
0.02%
Manganese (Mn) EDTA-chelated – all grades
0.01%
Molybdenum (Mo) – all grades
0.001%
Zinc (Zn) EDTA-chelated – all grades
0.002%

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