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Mountain microorganism biofertilizer

Mountain microorganism biofertilizer

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Liquid MM

Biofertilizers Inoculants Bio-input
commercialized
Fermentation

Fermentation

Biological transformation of the plant material by microorganisms (yeasts, bacteria) in total or partial absence of oxygen, releasing and transforming active compounds over a longer period than the other techniques (days to weeks).

Process summary

1) Chop the plant material and submerge it in water, in a wide, non-airtight container (to let gases escape). 2) Stir daily during fermentation. 3) Let ferment from several days to several weeks, depending on ambient temperature, until it stops foaming. 4) Strain and dilute before use — the undiluted product can be very concentrated.

See all preparation methods

🟠 Not prohibited

A liquid biofertilizer that brings the microbial life of the forest to crops and soil, together with the compounds formed during fermentation (organic acids, vitamins, amino acids), to stimulate plant growth and soil biological activity.

Application

Application description: Mainly as a foliar spray, in the cool hours (early morning or evening), aiming at the underside of the leaves. It can also be applied to the soil through irrigation, on seeds or roots before transplanting, on crop residues or to start a compost.

Dose: 3% to 10% depending on the crop stage: 3 to 10 litres of biofertilizer in 100 litres of water (in a 16-litre knapsack sprayer: 0.5 to 1.6 litres).

Tips

The drum must be completely airtight: if the liquid smells rotten, air has got in. Each time you open the drum, add a little molasses to feed the microorganisms. For better adhesion on the leaves, add per 100 litres of mix 2 litres of molasses, 1.5 kg of ash or 2 kg of aloe vera. It works best in soils rich in organic matter, where the microorganisms find food.

Preparation process

1) Dissolve the molasses, whey (or milk) and, if used, the minerals in half the water, inside the drum. 2) Put the solid mountain microorganisms in a cloth bag (a pillowcase works) and tie it loosely: it will act as a tea bag. 3) Submerge the bag and top up with water, leaving about 15 cm of air under the lid. 4) Seal the drum and fit the lid with a valve or nipple connected to a hose whose end sits in a bottle of water (water trap): gases escape without air getting in. 5) Leave to ferment in the shade for about 30 days, until bubbling stops. 6) Strain before use.

Ingredients

  • Water ⓘ
  • Molasses ⓘ
  • Whey ⓘ
  • Wheat or rice bran ⓘ
  • Native forest leaf litter and humus ⓘ
  • Wood ash ⓘ
  • Rock flour (rock dust) ⓘ
  • For a 200-litre drum: 15 kg of solid mountain microorganisms (fermented for at least 30 days). 5 litres of molasses. 4 litres of whey or 2 litres of milk. 150 litres of unchlorinated water. Optional: 3 kg of rock dust and/or sifted wood ash (a mix from several sources is best).

Tools and equipment

  • 200-litre drum with an airtight lid. Valve or nipple, hose and plastic bottle (water trap). Cloth bag or pillowcase and string. Strainer.

Preparation time

About 30 days of fermentation (plus the minimum 30 days needed for the solid mountain microorganisms).

Product obtained

Amber to brown liquid with a sweet fermented smell and no rotten odour.

Source / Reference

López, Juanfran (2022). The Biofertiliser Manual, 2nd edition. www.juanfranlopez.com — Recipe written in our own words; SADER and INIFAP (2021). Manuales prácticos para la elaboración de bioinsumos, no. 13: Microorganismos de montaña (in Spanish). Technical Support Strategy, Mexican Ministry of Agriculture.

Recipe written in our own words by biopreparados.es. Copyright and sources

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Contact person

Grégory Prybys
Tel: +33 7 75 76 37 70 — WhatsApp: +54 9 11 2157 0868
Country: Argentina

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Regulatory status

🟠 Not prohibited (made on the farm for own use)

No European text names “Mountain microorganism biofertilizer”. Made on the farm for one’s own use, it falls under no authorisation regime: Regulation (EU) 2019/1009 and, in Spain, Royal Decree 506/2013 only cover products placed on the market. In organic farming, Regulation (EU) 2018/848 (Annex II, Part I, point 1.9.6) generally allows preparations of micro-organisms to improve soil condition or nutrient availability: the certification body will decide; there is no text specific to this preparation. Its ingredients appear on the organic input lists of several countries: see each country’s page.

Official texts

Official sources automatically checked on 20/10/2026.

What the icons mean: ✅ Authorised ⚠️ Tolerated 🟠 Not prohibited ⛔ Not authorised EU 🔎 Status being verified Full details →

Documentary information, checked on 20/10/2026. Not a substitute for legal advice; regulations may vary from country to country. See the regulations · Substances authorised in Europe

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