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Aqueous extract of barbasco roots and bark

EN FR ES DE IT PT

Aqueous extract of barbasco roots and bark

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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:

By

Plant vitality Extract Plant-based

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

 ⛔ Not authorised EU

Milky extract of ground barbasco roots and bark (Lonchocarpus nicou), an Amazonian plant containing rotenone, with biodegradable soap, documented in Ecuador.

Application

Application description: Sprayed diluted every 5–7 days according to the source; tried on strawberry, rose and carnation.

Dose: 5–7 ml per litre of water; 1 L in 200 L of water for 1–1.5 ha.

Tips

Rotenone is toxic to fish, beneficial insects and people: gloves, goggles and mask; do not apply near watercourses. Rotenone is not approved in the EU nor allowed in most organic regulations. Keep for less than a month in dark bottles in a cool place. Before any use, check your country's regulations: in the EU, a homemade preparation presented for plant-protection use is not authorised.

Preparation process

1. Grind the roots and bark.
2. Mix with the 8 L of water.
3. Squeeze through flannel to obtain a milky extract.
4. Remove the coarse material and stir in the soap.

Ingredients

  • Water ⓘ — 2.113 gal
  • Liquid soap or neutral detergent ⓘ — 1.058 oz
  • Barbasco roots and bark (Lonchocarpus nicou) ⓘ — 17.637 oz
  • For 10 L: 500 g barbasco roots and bark; 30 g biodegradable soap (potassium or black soap); 8 L rain or standing water.

Tools and equipment

  • Strainer or filter cloth
  • Protective gloves, goggles and mask
  • Manual or backpack sprayer
  • Plastic buckets (never metal)
  • Mortar or crushing tool

Goggles, gloves and mask required

Preparation time

Less than an hour.

Product obtained

Milky extract.

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 15, validated by the Faculty of Agricultural Sciences of the Central University of Ecuador (Cotopaxi and Pichincha, Ecuador): 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

⛔ Not authorised in the EU as a home-made preparation

In the EU, rotenone is not an approved active substance and a homemade preparation presented for plant-protection use is not authorised. This plant does not appear on any of the official organic input lists consulted. Documentary recipe (FAO/IPES guide); no country proposed.

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

Documentary information, checked on 26/10/2026. Not a substitute for legal advice; regulations may vary from country to country. See the regulations · Substances authorised in Europe

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