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Marigold root extract (Tagetes erecta)

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Marigold root extract (Tagetes erecta)

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Plant vitality Maceration Plant-based

Maceration

Cold extraction by prolonged soaking of the plant material in a liquid (water, oil or alcohol depending on use), without heat. The longer contact time than an infusion extracts compounds that cold water alone would dissolve too slowly.

Process summary

1) Chop or crush the plant material. 2) Fully submerge it in the chosen liquid, in a closed container. 3) Let it sit in a cool, dark place, stirring occasionally, for anywhere from several hours to several days depending on the preparation. 4) Strain and use the resulting liquid.

See all preparation methods

 ✅ Authorised (some countries) Bio-inputs in BurundiBio-inputs in ColombiaBio-inputs in Costa RicaBio-inputs in IndonesiaBio-inputs in IndiaBio-inputs in KenyaBio-inputs in South KoreaBio-inputs in MoroccoBio-inputs in PeruBio-inputs in the PhilippinesBio-inputs in RwandaBio-inputs in TanzaniaBio-inputs in UgandaBio-inputs in South SudanBio-inputs in the Congo - KinshasaBio-inputs in Somalia

Maceration of marigold roots in water, applied at the base of tomato plants in gardens in Quito.

Application

Application description: As a drench directed at the roots (without wetting the leaves): once before transplanting, then weekly for 60 days.

Dose: 10–15 ml per litre of water; 4 L for about 400 m².

Tips

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. Wash the roots well.
2. Cut them into pieces no larger than 2 cm.
3. Put them in the water and macerate for 5 days.
4. Strain.

Ingredients

  • Water ⓘ — 1.057 gal
  • Marigold roots (Tagetes erecta) ⓘ — 17.637 oz
  • For 4 L: 500 g marigold roots; 4 L rain or standing water.

Tools and equipment

  • Strainer or filter cloth
  • Plastic buckets (never metal)

Preparation time

5 days; use within 4 days.

Product obtained

Yellowish liquid.

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 29, validated by the AGRUPAR participatory urban agriculture project (Quito, 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

✅ Authorised in Burundi, in Colombia, in Costa Rica, in Indonesia, in India, in Kenya, in South Korea, in Morocco, in Peru, in the Philippines, in Rwanda, in Tanzania, in Uganda, in South Sudan, in the Congo - Kinshasa and in Somalia Bio-inputs in BurundiBio-inputs in ColombiaBio-inputs in Costa RicaBio-inputs in IndonesiaBio-inputs in IndiaBio-inputs in KenyaBio-inputs in South KoreaBio-inputs in MoroccoBio-inputs in PeruBio-inputs in the PhilippinesBio-inputs in RwandaBio-inputs in TanzaniaBio-inputs in UgandaBio-inputs in South SudanBio-inputs in the Congo - KinshasaBio-inputs in Somalia

Bio-inputs in Burundi Authorised bio-preparations: Burundi
Bio-inputs in Colombia Authorised bio-preparations: Colombia
Bio-inputs in Costa Rica Authorised bio-preparations: Costa Rica
Bio-inputs in Indonesia Authorised bio-preparations: Indonesia
Bio-inputs in India Authorised bio-preparations: India
Bio-inputs in Kenya Authorised bio-preparations: Kenya
Bio-inputs in South Korea Authorised bio-preparations: South Korea
Bio-inputs in Morocco Authorised bio-preparations: Morocco
Bio-inputs in Peru Authorised bio-preparations: Peru
Bio-inputs in the Philippines Authorised bio-preparations: Philippines
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

In the EU, this preparation is not an approved basic substance: a homemade preparation presented for plant-protection use is not authorised there. Plant preparations and extracts appear on the official lists of inputs permitted in organic farming of: Burundi, Colombia, Costa Rica, Indonesia, India, Kenya, South Korea, Morocco, Peru, Philippines, Rwanda, Tanzania, Uganda, South Sudan, DR Congo, Somalia. Depending on the country, the certification body's approval may be required: see each country's page.

Official texts

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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