German technology
Humic Substances Based Products
Humintech GmbH
Am Pösenberg 9-13
D-41517 Grevenbroich

Telefon: +49 2181 70 676 - 0
Fax: +49 2181 70 676 - 22
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HUMAGRA® NPK 6-0-10 HA Brochure


HUMAGRA® NPK 6-0-10 + HA WSG is a fully water soluble organomineral fertilizer. It combines humic acids with nitrogen and potassium. In addition to supplementing plant nutrition, the product acts as a soil conditioner and plant growth stimulant. It is a permanent humic substance, which cannot be easily decomposed by soil microorganisms. HUMAGRA® NPK 6-0-10 + HA WSG can be used alone or mixed with most fertilizers.


HUMAGRA® NPK 6-0-10 + HA WSG is obtained through alkaline extraction from German leonardite (highly oxidized lignite). It arises from chemical and biological humification of plants and other organic matter, out of biological activity and geological processes. The formulation provides a very high content of humic and fulvic acids as well as nitrogen and potassium.


HUMAGRA® NPK 6-0-10 + HA WSG provides positive fertilizing and soil-conditioning effects, especially in sandy and heavy soils. The product can be applied to all agricultural and horticultural crops, by soil or foliar application.

  • Increases crop yield and quality
  • Supports the plant with different forms of nitrogen
  • Improves soil structure and water retention capacity
  • Increases and stimulates beneficial soil microorganisms
  • Enhances soil cation exchange capacity (CEC)
  • Increases the effectiveness of fertilizers and reduces nutrient losses
  • ​Promotes root development
  • Increases nutrient uptake
  • Acts as a natural chelator for microelements in alkaline soils and increases their availability for plants
  • Decreases stress by drought and/or application of pesticides
  • ​Increases seed germination
  • Reduces the residues of herbicides and toxic substances in soils
  • Prevents nitrate leaching
  • Keeps 100% of nitrogen readily available for the plant


In all crops
6–8 kg/ha divided into several doses (1–2 kg/ha) during season

Vegetables in greenhouses 
8–10 kg/ha divided into several doses (1–2 kg/ha) during season

Horticultural fruit trees
8–10 kg/ha divided into several doses (1–2 kg/ha) during season

Open field vegetables
6–8 kg/ha divided into several doses (1–2 kg/ha) during season and at fertilizer application

Cereals, potatoes, legumes
6–8 kg/ha divided into several doses (1–2 kg/ha) during season and at fertilizer application

Ornamental plants and forest nursery, landscaping, turf grass (in general)
8–10 kg/ha divided into several doses (1–2kg/ha) or 1 kg/m³ during the preparation of substrates

Foliar application
150–300 g/1000 l water every two weeks during season

UV protection
0.1% (400 g in 400 l water/ha)

* This recommendation may be varied according to the soil characteristics and local conditions.

INHERENT COMPOSITION (Typical values on basis Dry Matter)

Potassium - Humates

70 %

Total Humic Acids 1/2

60 %

Humic Acid 1

55 %

Fulvic Acid 1

5 %

Potassium (K2O)

10 %

Dry Matter

83 - 85 %

Organic Substance

70 %

pH - value

9.5 - 10.5

Total Nitrogen

6 %

Thereof available Nitrogen

5 %

Bulk Density

0.55 - 0.65 kg/L

according to ISO 19822 / HPTA / AAPFCO / IHSS Analysis method 
2 according to CDFA  60 % / Colorimetric method 70 %
“All Humintech humic substances based products are analysed according to the HPTA test method (ISO 19822:2018) to determine the content of humic and hydrophobic fulvic acids. Most suppliers are using the more simple “colorimetric” analysis method to determine the humic and fulvic acid contents, but experience shows that, due to its inaccuracy, this method indicates higher contents and is not suited to identify non humic substances such as lignosulphonates. In order to maintain the highest quality standard, Humintech has therefore decided to use the currently best analytical standard for the determination of humic and fulvic acids within the scope of quality control.”


Humintech is a biotech company based in Grevenbroich, Germany. We are primarily focused on the research, development and industrial production of humic matter and humic acids for the agricultural sector.  Our products find further use in the feed, pharmaceutical and construction industry, in veterinary medicine and for ecological purposes such as water purification and soil decontamination.


Humintech GmbH

Am Pösenberg 9-13
41517 Grevenbroich / Deutschland 

Phone: +49 2181 70 676 - 0
Fax: +49 2181 70 676 - 22