3D DuraTec Top 21

DuraTec® Top 21 21-5-9(+2+TE)

Partly coated NPK complex fertilizer with nitrification inhibitor DMPP (3,4-dimethylpyrazolphosphate), with an emphasis on nitrogen.
  • Unique double nitrogen technology 2NT
  • Stabilization of ammonium with DMPP
  • Polymer-coated granules
  • Immediate and long-term effect
  • Environmentally friendly due to less leaching


DuraTec® is a NPK complex fertilizer with a unique combination of two nitrogen technologies for an efficient and environmental friendly nutrient supply. The polymer-coated NPK ensures an even and climate-adapted nutrient release up to 3 months. The stabilized ammonium with DMPP delays the nitrification and results in an ammonium-N-nutrition for 6 weeks for greener leaves and enhanced flowering.
Well suited for cash crops such as vegetables, fruits and other horticultural and agricultural crops.

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NPK fertilizer, partially coated (15 %), with magnesium and sulfur 21-5-9(+2+TE), with boron, iron and zinc.
Poor in chloride.

21,0 %


total nitrogen
9,9 % nitrate nitrogen
11,1 % ammonium nitrogen

5,0 %


neutral ammon citrate and water soluble phosphate
4,0 % water soluble phosphate

9,0 %


water soluble potassium oxide

2,0 %


total magnesium oxide
1,6 % water soluble magnesium oxide

6,0 %


total sulfur
4,6 % water soluble sulfur

0,02 %



0,25 %



0,015 %



More information on the national declaration can be found on the respective country sub-websites.

Application Recommendations

For detailed information on application data please get in touch with your local supplier.

Form of Delivery

  • 25 kg bag
  • big bag on request
Not all delivery forms are available in all countries.

Transport & Storage Recommendations


  • Delivery as loose goods in big bags or on pallets with bags and canisters.
  • Protect loose goods from moisture during transport.
  • Protect goods from excessive direct sunlight and large temperature fluctuations during transport.
  • Only transport fertilizer at moderate temperatures. Use an air-conditioned lorry if necessary.
  • Take note of any hazardous material labels on the product.


Storage general

  • Protect stored fertilizer from frost, light, and moisture.
  • Store loose goods inside a building and not in outdoor areas. Keep doors closed and cover heaped materials.
  • As the product has a tendency to attract moisture, protect it from rain and standing water.
  • Take note of the hazardous material labels on the product where appropriate.
  • Avoid stacking more than two pallets on top of each other. Always cover loose goods and do not offload in the rain.
  • Only transport and store at temeratures between 5 °C and 40 °C. Only store in the original packaging. Products should be used up as quickly as possible once opened.

Storage temperature

  • Avoid frost and excessively high temperatures.
  • Avoid large temperature fluctuations during storage.

Storage period

  • When stored correctly, fertilizer (excluding liquid fertilizer) can be stored in its sealed original packaging for up to three years after delivery.
  • Products should be used up as quickly as possible once opened.
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Matthias Grün image
Beata Rudzinska image
Anne Düpjohann image
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