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Enriched liquid biofertiliser (Rosario)

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Enriched liquid biofertiliser (Rosario)

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Biofertilizers Fermentation Mixed (several origins)

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

 ✅ Authorised (some countries) Bio-inputs in BrazilBio-inputs in BurundiBio-inputs in KenyaBio-inputs in RwandaBio-inputs in TanzaniaBio-inputs in UgandaBio-inputs in South SudanBio-inputs in the Congo - KinshasaBio-inputs in Somalia

Fermented biofertiliser of fresh plants, manures, ash, basalt dust, eggshell, bone ash and milk, validated in the urban gardens of Rosario (Argentina); according to the source it stimulates growth through its nitrogen and mineral content and brings microorganisms to soil and leaves.

Application

Application description: Watered onto soil and plants every 20 days, as a foliar spray, in nursery substrate, for soaking seeds and at transplanting.

Dose: Watering: 1 in 20. Foliar: up to 10%. Seeds: 20%, soaked for 12 hours. Transplanting: 5%.

Tips

Keeps up to 6 months in dark glass in a cool place out of the sun. Use manure from animals not given antibiotics or antiparasitics.

Preparation process

1. Collect the above-ground parts of the plants and chop them coarsely.
2. Mix all the ingredients in the water in the drum.
3. For aerobic fermentation, stir daily; for anaerobic fermentation, close with an airlock (tube bubbling into a bottle of water).
4. After 2 months, filter.
5. Store in plastic or glass containers, preferably dark.

Ingredients

  • Water ⓘ
  • Fresh manure ⓘ — 15.85 gal
  • Fresh plant scraps ⓘ — 22.046 lb
  • Wood ash ⓘ — 6.614 lb
  • Milk or whey ⓘ — 1.321 gal
  • Rock flour (rock dust) ⓘ — 8.818 lb
  • Eggshell ⓘ — 17.637 oz
  • Bone ash ⓘ — 6.614 lb
  • For about 120 L (200 L drum): 10 kg chopped fresh plants (local herbs and legumes); 60 L fresh cow, horse, pig and chicken manure; 3 kg wood ash; 4 kg basalt dust; 500 g ground eggshell or shell; 3 kg bone ash; 5 L milk or whey; rain or standing water up to 170 L.

Tools and equipment

  • Strainer or filter cloth
  • Dark glass or opaque plastic storage container
  • Sealed drum with fermentation valve

Preparation time

2 months.

Product obtained

Dark brown liquid with a fermented smell.

Source / Reference

IPES, RUAF Foundation and FAO (2010). “Biopreparados para el manejo sostenible de plagas y enfermedades en la agricultura urbana y periurbana”, ¿Cómo hacerlo? series, sheet n.º 2, validated by the Rosario municipal urban agriculture programme and Pro Huerta/INTA (Santa Fe, Argentina): https://www.fao.org/3/a-as435s.pdf — guide also circulated by Portal Frutícola. 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 Brazil, in Burundi, in Kenya, in Rwanda, in Tanzania, in Uganda, in South Sudan, in the Congo - Kinshasa and in Somalia Bio-inputs in BrazilBio-inputs in BurundiBio-inputs in KenyaBio-inputs in RwandaBio-inputs in TanzaniaBio-inputs in UgandaBio-inputs in South SudanBio-inputs in the Congo - KinshasaBio-inputs in Somalia

Bio-inputs in Brazil Bio-preparations authorised in Brazil
Bio-inputs in Burundi Authorised bio-preparations: Burundi
Bio-inputs in Kenya Authorised bio-preparations: Kenya
Bio-inputs in Rwanda Authorised bio-preparations: Rwanda
Bio-inputs in Tanzania Authorised bio-preparations: Tanzania
Bio-inputs in Uganda Authorised bio-preparations: Uganda
Bio-inputs in South Sudan Authorised bio-preparations: South Sudan
Bio-inputs in the Congo - Kinshasa Authorised bio-preparations: Congo - Kinshasa
Bio-inputs in Somalia Authorised bio-preparations: Somalia

All the ingredients of this recipe appear on the official lists of permitted substances taken into account for: Brazil, Burundi, Kenya, Rwanda, Tanzania, Uganda, South Sudan, Congo - Kinshasa, Somalia. Their use remains subject to the conditions of those texts (doses, approval of the certification body). Bone ash is listed in the East African standard EAS 456; in Brazil, processed animal products are permitted only with the control body's approval; in Colombia, bovine bone meal is prohibited.

Official texts

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

Documentary information, checked on 28/10/2026. Not a substitute for legal advice; regulations may vary from country to country. See the regulations · Substances authorised in Europe

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