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Humus hydrolysate

Humus hydrolysate

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⚠️ Protective equipment required for this preparation

This recipe involves handling products that may be irritating or toxic. Always wear the following equipment:

Humic acids from humus or leonardite

Biostimulants Bio-input
commercialized
Extract

Extract

Highly concentrated extraction of the plant material in a solvent (water, alcohol or oil), using a much higher plant-to-solvent ratio than a simple maceration, and often a longer contact time. The result is a very concentrated liquid, meant to keep for a long time and always be used diluted, unlike the other techniques prepared for more immediate use.

Process summary

1) Finely chop or crush the plant material, using a high proportion relative to the solvent (more plant matter than in a standard maceration). 2) Fully cover with the chosen solvent (water, alcohol or oil) in a closed container, opaque or kept in the dark. 3) Let it sit for several weeks, shaking occasionally. 4) Strain, bottle in a sealed container and store cool and dark — always use diluted, never undiluted.

See all preparation methods

✅ Authorised EU

Concentrado líquido de ácidos húmicos y fúlvicos y de potasio, en una forma fácil de asimilar por las plantas.

Application

Application description: En pulverización foliar, hacia el envés de las hojas, o con el riego.

Dose: Del 2 % al 3 %: de 2 a 3 litros en 100 litros de agua. Se puede mezclar al 3 % con el Supermagro.

Tips

Producto muy alcalino y cáustico: guárdalo etiquetado, fuera del alcance de niños y animales, y nunca lo apliques puro. Aporta sobre todo potasio, útil durante la formación de los frutos. En agricultura ecológica, la leonardita y los ácidos húmicos extraídos con soluciones inorgánicas figuran en el anexo II del Reglamento de Ejecución (UE) 2021/1165 con condiciones: confírmalo con tu organismo de certificación.

Preparation process

1) Trabaja con guantes, gafas y ropa que cubra la piel: la potasa cáustica quema. 2) En un bidón de plástico resistente, mezcla el agua con el humus o la leonardita y añade la potasa poco a poco, removiendo: la mezcla se calienta. 3) Remueve de 10 a 15 minutos, dos veces al día, durante 3 días, con el bidón tapado (no hace falta que sea hermético). 4) Al tercer día está listo. Se conserva bien.

Ingredients

  • Water ⓘ
  • Other ⓘ
  • Mature compost or worm castings ⓘ
  • Potassium hydroxide (KOH) ⓘ
  • 100 litros de agua. 40 kg de humus (humus de lombriz o compost muy maduro) o 25 kg de leonardita. 3 kg de hidróxido de potasio (potasa cáustica) en escamas. Opcional: 3 kg de ceniza de huesos.

Tools and equipment

  • Bidón de plástico resistente con tapa. Palo para remover. Guantes, gafas y ropa de protección.

Goggles, gloves and mask required

Preparation time

3 días.

Product obtained

Líquido negro y espeso, muy alcalino.

Source / Reference

López, Juanfran (2022). The Biofertiliser Manual, 2nd edition. www.juanfranlopez.com — Recipe written in our own words

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

✅ Authorised in the EU

Bio-preparations authorised in the European Union

Allowed in organic farming in the EU: Annex II of Implementing Regulation (EU) 2021/1165 includes humic and fulvic acids obtained with inorganic salts or solutions (except ammonium salts), such as potassium hydroxide, and leonardite if it is a by-product of mining. Made for own use, it needs no authorisation as a fertiliser.

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 19/10/2026. Not a substitute for legal advice; regulations may vary from country to country. See the regulations · Substances authorised in Europe

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