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Water-Soluble NPK Fertilizer
12-42-12 with micro-nutrients, enriched with Humates complex

Primary sources of nutrients

  • Potassium Nitrate, Monoammonium Phosphate, Urea
  • The raw materials used for microelements are salts of Boron, Molybdenum and chelated (EDTA) Fe, Mn, Zn, Cu
  • P2O5 and K2O are completely soluble in water and neutral ammonium citrate


  • 25kg Polyethylene bag


  • Fertilizer for Nutrigation™
Analyte Unit Typical
Total nitrogen (as N) % 12.0
Ammoniacal Nitrogen (N-NH4) % 8.4
Nitric Nitrogen (N-NO3) % 3.6
Ureic Nitrogen (N-NH2) % 0
Water Soluble Phosphorus (as P2O5 % 42.0
Water Soluble Phosphorus (as P) % 18.3
Water Soluble Potassium (as K2O) % 12.0
Water Soluble Potassium (as K) % 10.0
Humates % 2.0
Iron (Fe)* ppm 1480
Manganese (Mn)* ppm 740
Boron (B) ppm 200
Zinc (Zn)* ppm 220
Copper (Cu)* ppm 160
Molybdenum (Mo) ppm 100
* EDTA-Chelates


Poly-Feed™ Stim SPARK

NPK formulae enriched with micro-nutrients and modified humate complex – for Nutrigation™

Poly-Feed™ Stim SPARK is highly recommended for Nutrigation™ throughout the growth season, to boost the efficiency of nutrient uptake and to improve plant nutrition. Poly-Feed™ Stim SPARK Stabilizes the soil pH increases soil microorganisms population, thus assuring apt availability of necessary phosphorus and other elements – even in strongly acidic or alkaline soils. 


Available formulae







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