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Fruit and milk bio-extract (LDD formula)

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Fruit and milk bio-extract (LDD formula)

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Biostimulants Fermentation Plant-based

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 in some countries Bio-inputs in ThailandBio-inputs in Brazil

Liquid ferment from Thailand's Land Development Department (LDD): low-grade raw milk, juicy fruit and molasses ferment for 15 days with the Super LDD 2 microbial activator, which the LDD distributes to farmers. According to the LDD, the product contains auxins, gibberellins, cytokinins, amino acids and humic acids.

Application

Application description: Foliar spray or watering, diluted.

Dose: According to the LDD: field crops 3.75 L in 1,250 L of water per hectare, every 10 days before flowering; fruit trees 20 tablespoons in 100 L of water, monthly before flowering; rice 12 tablespoons in 60 L of water at days 30, 50 and 60.

Tips

Molasses can be replaced by 5 kg of sugar or 10 L of cane juice. A new batch can be started with 2 L of 5-7-day-old bio-extract, one sachet of activator and the same ingredients. The LDD gives no precautions: work with clean containers and avoid milk or fruit of doubtful origin.

Preparation process

1. Chop the fruit.
2. In a lidded drum, mix the milk, fruit and molasses.
3. Dissolve the activator in a little water and add it; stir well.
4. Close loosely and leave to ferment for 15 days in the shade, stirring now and then.
5. It is ready when bubbling slows, the alcohol smell fades and the pH falls to 3-4. Strain before use.

Ingredients

  • Molasses ⓘ — 22.046 lb
  • Milk ⓘ — 7.925 gal
  • Ripe seasonal fruit (banana, papaya or pineapple) ⓘ — 44.092 lb
  • Super LDD 2 microbial activator (LDD, Thailand) ⓘ — 0.882 oz
  • 30 L of raw milk (low grade); 20 kg of fresh, juicy fruit; 10 kg of molasses; 1 sachet (25 g) of Super LDD 2 activator.

Tools and equipment

  • Wooden stirring paddle
  • Strainer or filter cloth
  • Manual or backpack sprayer
  • Airtight drum or fermenter with fermentation valve

Preparation time

15 days.

Product obtained

Acidic liquid (pH 3-4) with a sweet-and-sour smell.

Source / Reference

Land Development Department (LDD), Tailandia / Thaïlande / Thailand. «Microbial Activator Super LDD 2»: https://webeng.ldd.go.th/pv/?cd=271 — WOCAT (2018), «Bio-fermentation for Soil Improvement (Thailand)», D. Saroj, LDD: https://qcat.wocat.net/en/wocat/technologies/view/permalink/6232/ — Recipe written in our own words.

Recipe written in our own words by biopreparados.es. Copyright and sources

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Country: Argentina

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Regulatory status

✅ Authorised in Thailand and in Brazil Bio-inputs in ThailandBio-inputs in Brazil

Bio-inputs in Thailand Authorised bio-preparations: Thailand
Bio-inputs in Brazil Bio-preparations authorised in Brazil

Authorised in Thailand and Brazil. Thailand: the recipe and the Super LDD 2 activator come from the Land Development Department (LDD), a public body that promotes them among farmers; bio-extracts made on the farm for own use need no registration, which is only required to sell fertilisers (Fertilizer Act B.E. 2518). Brazil: Law 15.070 of 2024 allows bio-inputs to be produced on the farm for own use, without registration and without sale. Use as a fertiliser or biostimulant, without claiming any effect against pests or diseases.

Official texts

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

Documentary information, checked on 01/11/2026. Not a substitute for legal advice; regulations may vary from country to country. See the regulations · Substances authorised in Europe

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