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Viçosa mixture (caldo Visosa)

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Viçosa mixture (caldo Visosa)

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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 Broth Mineral

Broth

A liquid preparation obtained by cooking or boiling one or more ingredients (plant, mineral or organic matter) in water. The resulting liquid is used as is or diluted, usually after cooling and filtering. Unlike a decoction, which focuses on extracting a plant's active principles, a broth is the finished preparation obtained by cooking a mixture.

Process summary

1) Prepare and measure the ingredients. 2) Put them in water in a suitable container. 3) Bring to a boil and cook for the time given in the recipe, stirring. 4) Let cool, strain if needed and use undiluted or diluted as the recipe states.

See all preparation methods

 ✅ Authorised (some countries) Bio-inputs in BrazilBio-inputs in ColombiaBio-inputs in Costa Rica

Mineral mixture of copper, zinc and magnesium sulphates with borax and lime, from the Latin American agroecological tradition, supplying copper together with micronutrients (zinc, magnesium, boron).

Application

Application description: Sprayed on the canopy of tropical fruit trees (soursop, mango, avocado, plantain) and, diluted, on vegetables, according to the source.

Dose: Undiluted on fruit trees; on vegetables, diluted half and half with water (according to the source).

Tips

Contains copper and borax: gloves, goggles and mask; keep away from children and animals; use plastic, never metal, containers. Copper accumulates in soil. In the EU and many countries, copper-based products are regulated plant protection products: check your country's regulations before any use.

Preparation process

1. Container A: dissolve the copper, zinc and magnesium sulphates and the borax in 20 L of water.
2. Container B: mix the lime into 80 L of water and stir.
3. Pour solution A into B (never the other way round), stirring constantly.
4. Use the same day: it does not keep.

Ingredients

  • Water ⓘ — 26.417 gal
  • Copper sulfate [CuSO4] ⓘ — 17.637 oz
  • Slaked lime (calcium hydroxide) [Ca(OH)₂] ⓘ — 17.637 oz
  • Zinc sulfate [ZnSO4] ⓘ — 21.164 oz
  • Magnesium sulfate [MgSO4] ⓘ — 14.11 oz
  • Borax or boric acid [H3BO3] ⓘ — 14.11 oz
  • For 100 L: 500 g copper sulphate; 600 g zinc sulphate; 400 g magnesium sulphate; 400 g borax; 500 g hydrated lime; 100 L water.

Tools and equipment

  • Wooden stirring paddle
  • Protective gloves, goggles and mask
  • Manual or backpack sprayer
  • Plastic buckets (never metal)

Goggles, gloves and mask required

Preparation time

About 30 minutes; use the same day.

Product obtained

Blue-green mixture that settles at the bottom.

Source / Reference

Asohofrucol, with FAO, the European Union in Colombia and AICS: “Guía para la implementación de biofábricas” (biofactories for peasant, family and community farming), Colombia, 2024: https://portalciudadanoagricultura.valledelcauca.gov.co/wp-content/uploads/2025/11/Guia-Asohofrucol-Biofabricas-2024.pdf — 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 Colombia and in Costa Rica Bio-inputs in BrazilBio-inputs in ColombiaBio-inputs in Costa Rica

Bio-inputs in Brazil Bio-preparations authorised in Brazil
Bio-inputs in Colombia Authorised bio-preparations: Colombia
Bio-inputs in Costa Rica Authorised bio-preparations: Costa Rica

Colombia expressly lists “caldo Visosa” among permitted inputs, if the certification body recognises the need (Resolution 199 of 2016). Brazil permits copper as sulphate and in mixtures, hydrated lime and micronutrients (zinc, boron, magnesium), with the control body's approval and at most 6 kg of copper per hectare per year (MAPA Ordinance 52/2021, annexes V and VII). In Costa Rica, copper and trace elements are permitted with restrictions (Decree 29782-MAG). In the EU, a homemade preparation presented for plant-protection use is not authorised.

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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