Idron NPK 9-50-9 + OE

Idron NPK 9-50-9 + TE is a phosphorus-rich water-soluble NPK fertiliser for fertigation of all crops after transplanting and before flowering. It combines 50% P₂O₅ with trace elements, several of them EDTA-chelated. Like the whole Idron range, it is low in chlorine (L.C.C.) and dissolves without sedimentation or clogging of emitters.

Phosphorus-rich 9-50-9 formula, for the post-transplanting and pre-flowering phase
Nitrogen in two forms: nitrate (1%) and ammoniacal (8%), with 9% K₂O and 2% MgO
EDTA-chelated trace elements (iron, manganese, zinc, copper) plus boron and molybdenum
Low chlorine content (L.C.C.)
Acidic solution: pH 4 at 1% and conductivity of 790 µS/cm at 1‰
Fertigation without sedimentation or clogging of emitters

How to use

Form: Water-soluble powder

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

Crops: All crops, including hydroponics

Crop / Use	Application rate
Fertigation – all crops, post-transplanting / pre-flowering phase	25–50 kg/ha per application

Product composition

Total nitrogen (N): 9%
of which nitrate nitrogen: 1%
of which ammoniacal nitrogen: 8%
Phosphorus pentoxide (P₂O₅): 50%
Potassium oxide (K₂O): 9%
Magnesium oxide (MgO): 2%
Boron (B): 0.01%
Copper (Cu) EDTA-chelated: 0.002%
Iron (Fe) EDTA-chelated: 0.02%
Manganese (Mn) EDTA-chelated: 0.01%
Molybdenum (Mo): 0.001%
Zinc (Zn) EDTA-chelated: 0.002%
pH (1% solution): 4
Conductivity (1‰): 790 µS/cm

Our Catalogue

Product catalogue 2026

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