Sonnenerde Organic Biochar

Create a perfect habitat for microorganisms


  • Increases the efficiency of your fertiliser
  • Improves soil fertility
  • Also for liquid manure and manure processing
  • Ideal as a compost additive
  • Grain: 0-2 mm
  • Organic
  • € 26,90 (€ 0,09 / 100 ml)

Price shown includes 13% VAT. Excludes delivery costs

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Contents: 30 l

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Item no.: SOE-005, Content: 30 l

EAN: n/a

  • Increases the efficiency of your fertiliser
  • Improves soil fertility
  • Also for liquid manure and manure processing
  • Ideal as a compost additive
  • Grain: 0-2 mm
  • Organic


Biochar is not a nutrient but offers a perfect habitat for desirable microorganisms due to its large surface size. It ensures that the nutrients in the soil are not lost, increasing the effectiveness of your fertiliser.


  • Directly applying the biochar to ground soil can lead to negative effects, as the biochar first has to “charge” itself with nutrients and microbiology. Only when the charcoal is saturated and "activated" can it become active and develop its positive effect. We recommend using our biochar with organic fertilizer!
  • If the biochar is used correctly, the humus content and soil fertility increase rapidly. This is reflected in an improved soil structure (the soil becomes looser), increased water absorption and increased water storage capacity. This helps plants become more resistant to diseases and pests. It also supports plant growth and stable yields, especially in years with poor weather.

Compost additive:

  • A series of tests have shown that the addition of 10-20% biochar clearly reduces nutrient losses during composting by up to 50%. The biochar also significantly reduces the odour during composting. Material composted with biochar always smells very strongly of forest soil. The finished compost has clear growth-promoting effects in the first year of use on plants with low nutrient requirements like carrots, onions, herbs, beans or peas. Soil treated with such a compost gets better from year to year (“terra preta effect”). From the second year after use, positive effects on the yield can also be expected for plants with heavy nutrient needs.

Liquid manure processing:

  • Adding 4-5 kg of biochar per cubic meter of liquid manure causes the liquid manure to become completely odour-free within a few hours. The nitrogen contained in the liquid manure is bound by the biochar and is no longer lost even after the liquid manure is used. This effect alone can save around fertilisation costs.

Manure processing:

  • The odour-binding effect can be used excellently in stable management. The biochar doesn't just improve the odour, it improves the quality of the manure and promotes decomposition. By reducing the nutrient losses, the quality of the manure is improved. A combination with rock meal would be perfect, as it also supplies the necessary trace elements and minerals that are essential for soil fertility and the build-up of humus. The microbiological composition of the manure is positively influenced by the combination of biochar and rock meal.

The general rule:

  • The earlier the biochar is used, the faster it can develop its effect. Ideally, it should be strewn in the barn (regularly in small quantities). Additional aeration of the slurry promotes the desired aerobic microbiology and is recommended.

Brands: Sonnenerde
Labels: Organic

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