Skip to main content

Microbes 1 → 4: Bamboo Grove to 150 kg per 300 Pyeong

Master Cho Han-kyu, interpreted by Kim Chang, Founder of Korean Natural Farming (Janong)

Spoken in Korean. Translated to English and checked line by line.

Cho walks through his Microbes (IMO) slides: the starter caught under bamboo, IMO2 with equal sugar, IMO3 on rice bran, and IMO4 made with half field soil so the local microbes meet their relatives. He says natural farming restores soil in two months where organic takes one to two years, then shows IMO4 spread at 150 kg per 300 pyeong in a Korean greenhouse: white film, earthworms, risen soil, and a 180 cm stick that goes all the way in.

What they found

The question

How do you grow the forest's microbes into something you can spread on a field, and what does it do there?

How they tested it

After the qigong break the camera clip changes (about 30 s of real time missing near 4426 s). Cho lectures from his own slides: photos of bamboo-grove mycelium and castings, the rice box, a Hawaiʻi basket version, IMO2, IMO3, IMO4 heaps, and a Korean greenhouse before and after. The slides carry no readable numbers. An audience member asks which stage he meant, and the interpreter checks the water step with Cho in Korean.

What was compared
  • IMO1 (bamboo grove starter) — Hard-cooked, firm rice (not sticky) in a lunchbox-type box, buried under bamboo. Hawaiʻi version on the slide: rice in a woven basket among dried leaves. Cho, from slides.
  • IMO2 — IMO1 mixed with an equal amount of sugar, 1:1 (the interpreter said brown sugar).
  • IMO3 — Cho: dilute IMO2 1,000 times and use it to bring rice bran to the right moisture. No rice bran: flour or corn flour mixed half and half with dried banana leaf, or steamed, dried, powdered sweet potato or banana. Interpreter only: moisture 65–70%, about 5 gallons of water per 60 lb of material; put Food (FPJ), Cleanser (brown rice vinegar), IMO2 and seawater (Minerals) or Mineral A in the water; turn when the pile reaches 110–120 (°F, units not said), generally once a day. Make it on a soil floor, seven parts shade to three sun, under cover from the weather, covered with a mat of dried, woven sugarcane leaves; nothing synthetic.
  • IMO4 — Cho: IMO3 mixed half and half with soil from your own field or paddy, wetted and fermented again; he adds that half has to come from the mountain. Spread 150 kg per 300 pyeong (about ¼ acre). Feed up to 50% of animal feed. Bed prep shown: no weed scraping, a light rotary till, IMO4, then spray soil treatment solution (SOS); mulch over it outdoors.
  • Soil treatment solution (SOS), promised as 'the recipe' — Not dictated on this page. The handout's soil-foundation column (토양기반조성) lists IMO4, Cleanser (brown rice vinegar) 1:500, Food (FPJ of mugwort and water dropwort) 1:500, Medicine (OHN) 1:1,000, malt (beer or sweet-rice-drink lees) 1:500, seawater 1:20–25, Mineral A 1:1,000; about 1 ton of liquid per 300 pyeong as the standard, soaking the top 20 cm; in drought add only more water.
Results
  1. A small starter, propagated, can bring five acres back to normal

    Cho compared it to the five barley loaves.

    ▶ 1:14:28 As spoken

  2. In a bamboo grove, earthworms gather under mycelium clumps, and their castings are the best organic fertilizer

    The castings take a crumb structure.

    ▶ 1:15:20 From the slides

  3. Chewed bamboo root gives sweet juice for 15 minutes; microbes love sweet, so they crowd into bamboo groves

    That is why the starter is collected there.

    ▶ 1:16:18 As spoken

  4. IMO1: firm cooked rice in a box, buried under bamboo

    Slides show the box and a Hawaiʻi basket version.

    ▶ 1:17:13 From the slides

  5. IMO2: IMO1 with an equal amount of sugar

    ▶ 1:18:51 From the slides

  6. IMO3: IMO2 diluted 1,000 times moistens rice bran

    Cho said rice bran; the room heard rice hull or mill run. Substitutes: flour or corn flour half and half with dried banana leaf; powdered sweet potato.

    ▶ 1:19:18 As spoken

  7. IMO3 moisture 65–70%; about 5 gallons of water to 60 lb of material

    Interpreter's figures, after checking the water step with Cho in Korean.

    ▶ 1:22:42 As spoken

  8. Turn the IMO3 pile at 110–120 (°F), generally once a day

    Interpreter only; units not said.

    ▶ 1:24:04 As spoken

  9. Microbes grow best at seven parts shade to three parts sun, on a soil floor, out of the weather

    In Hawaiʻi, cover with dried sugarcane leaves woven into a mat; nothing woven from synthetic fiber.

    ▶ 1:24:29 As spoken

  10. IMO3 put straight on the field has no strength yet

    ▶ 1:27:44 As spoken

  11. IMO4: IMO3 mixed half and half with soil from your own field or paddy

    Cho adds that half has to come from the mountain; without it you can't make it.

    ▶ 1:28:08 As spoken

  12. Field soil goes in because microbes are jealous: strangers fight, relatives are welcomed

    The field microbes come out to fight and find cousins and uncles already there.

    ▶ 1:29:00 As spoken

  13. Organic farming takes one to two years to bring soil back; natural farming materials take two months

    ▶ 1:32:04 As spoken

  14. True organic farming is sunlight, air, water, soil, crops and people in organic harmony

    Using organic materials is 'organic-materials farming'; using a little less chemical and calling it organic is 'a lie'.

    ▶ 1:33:35 As spoken

  15. IMO4 can make up to 50% of animal feed with no problem

    ▶ 1:37:34 As spoken

  16. Spread IMO4 at 150 kg per 300 pyeong (about ¼ acre)

    Slide: a greenhouse bed covered in white IMO4. The interpreter first said 300 kg.

    ▶ 1:37:58 As spoken

  17. IMO4 forms a white film over the ground and weeds can't come up through it

    Outdoors, mulch over it: direct sun kills the microbes. The greenhouse bed shown had no mulch.

    ▶ 1:38:25

  18. That bed was poor soil; on rich soil the growth comes out black, not white

    ▶ 1:39:40 As spoken

  19. Bed prep: no weed scraping, a light rotary till, IMO4, then soil treatment solution

    Interpreter: 'like a chicken scratching the surface'.

    ▶ 1:40:24 As spoken

  20. After two years of this, you won't need anything else

    Cho: microbes are high-grade protein and high-grade calcium, so the crop does fine on that alone.

    ▶ 1:42:18 As spoken

  21. Inside the greenhouse the same soil swelled up after soil-foundation building

    Cho: dough without yeast stays hard; with yeast it becomes castella sponge cake.

    ▶ 1:43:03

  22. After 4 years of natural farming, a 180 cm stick goes all the way in anywhere in the cucumber greenhouse

    Microbes and small animals did the deep tilling a tractor can't.

    ▶ 1:45:03

Hold it loosely
  • The slides are photos with no readable numbers; the greenhouse results are one farm's pictures, not measured trials.
  • Several figures are the interpreter's alone: 65–70% moisture, 5 gal per 60 lb, turning at 110–120, and a '15 to 25 Celsius' whose meaning is unclear.
  • About 30 s of real time is missing at the camera-clip join near 4426 s, and Cho's first words on the IMO slides are unclear.
  • Cho said rice bran; the interpreter and audience said rice hull and mill run.
  • 'Half from the mountain' is clear in Korean, but whether he means the IMO3 or extra forest soil is not.
  • Cho's 50% of feed is higher than the 30% he gave in Hawaiʻi in 2018.
For your farm
  • Catch the starter where it's sweet: bamboo groves are full of microbes.
  • Mix IMO1 1:1 with sugar for IMO2; dilute IMO2 1:1,000 to moisten rice bran for IMO3.
  • Make IMO3 and IMO4 on bare soil, in shade, under a natural cover.
  • Mix in your own field soil for IMO4 so the field's microbes meet relatives, not strangers.
  • Spread about 150 kg per 300 pyeong (¼ acre), mulch it outdoors, and follow with soil treatment solution.
  • Let microbes and small animals do the deep tilling.

Next to Master Cho's teaching

  • Agrees

    IMO1: cooked rice in a lunchbox in a bamboo grove Janong says to bury the lunchbox in the local bamboo field or leaf mold. Here he adds why: bamboo roots are sweet, and microbes love sweet.

    Cho, Janong Natural Farming (2010 draft), p. 29

  • Agrees

    IMO3: IMO2 diluted 1,000 times on rice bran, 65–70% moisture, nutrient liquids in the water His recipe book says dilute IMO2 500–1,000 times, mix with rice bran, 65–70% moisture, OHN, FPJ, BRV and Mineral A in the water. Only the interpreter says rice hull.

    Cho, Natural Farming Agricultural Materials (Recipe), p. 15

  • Agrees

    IMO4 at 150 kg per 300 pyeong The recipe book gives a minimum of 150 kg per 0.1 ha (about 300 pyeong), scattered thin before planting.

    Cho, Natural Farming Agricultural Materials (Recipe), p. 18

  • Differs

    IMO4 up to 50% of animal feed In Hawaiʻi in 2018 Cho put IMO4 at up to 30% of feed, and in the 2017 fruit seminar he cited a trial where 50% was too much and 30–40% worked.

    2018/Cho - advanced hawaii/cho advanced 2018 2-3 @ 1:00:58 (translated)

“It can do as much as the five barley loaves.”

▶ 1:14:18

“The field microbes come out to pick a fight, and who's there? Their own relatives! Cousins and uncles have come out!”

▶ 1:30:15

“Sunlight, air, water, soil, crops and people have to farm in organic harmony. Only that is organic farming.”

▶ 1:35:50

“This wasn't made with scholarship or with technology.”

▶ 1:44:03

In this talk

  1. 1:13:44IMO1: the starter from the bamboo grove
  2. 1:18:51IMO2 and IMO3: one to a thousand on rice bran
  3. 1:21:17Question: IMO2 or IMO3? Water and moisture
  4. 1:24:18Seven shade, three sun: where microbes grow
  5. 1:27:44IMO4: field soil, jealous microbes, welcome relatives
  6. 1:31:51Two months, not two years: what organic really means
  7. 1:37:28IMO4 in feed and on the field: 150 kg per 300 pyeong
  8. 1:41:23Greenhouse results: risen soil, a 180 cm stick

Transcript

English translation, checked against the Korean as spoken.