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Water-Soluble NPK Fertilizer
21-11-21+2MgO with micro-nutrients, enriched with Seaweed extract

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™ and foliar feeding
Analyte Unit Typical
Total nitrogen (as N) % 21.0
Ammoniacal Nitrogen (N-NH4) % 2.2
Nitric Nitrogen (N-NO3) % 5.9
Ureic Nitrogen (N-NH2) % 12.9
Water Soluble Phosphorus (as P2O5 % 11
Water Soluble Phosphorus (as P) % 4.8
Water Soluble Potassium (as K2O) % 21
Water Soluble Potassium (as K) % 17.5
Water Soluble Magnesium (as MgO) % 2.0
Water Soluble Magnesium (as Mg) % 1.2
Seaweed extract % 0.5
Iron (Fe)* ppm 1000
Manganese (Mn)* ppm 500
Boron (B) ppm 200
Zinc (Zn)* ppm 150
Copper (Cu)* ppm 110
Molybdenum (Mo) ppm 70
* EDTA-Chelates


Poly-Feed™ Stim ENDURO

NPK formulae enriched with micro-nutrients and seaweed extracts

Poly-Feed™ Stim ENDURO enriches plant nutrition with seaweed extracts that contain a wide range of nutrients and physio active compounds that together improve plant development and soil properties. Application of Poly-Feed™ Stim endure, either by Nutrigation™ or by foliar sprays, results in better growth, healthier plants and improved yield.


Available formulae





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