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Carbon-Nitrogen Ratio, Bokashi IMO5, GCM Farms in Korea

Drake opens with a schedule note: no office hours next Sunday, Easter. He answers Stone Mason's question about using fermented Bokashi compost as a nitrogen source for IMO5, walking through carbon-nitrogen ratio: compost wants roughly 4 to 10 parts carbon per 1 part nitrogen, while healthy soil runs closer to 24 to 1. Too much nitrogen burns off soil carbon fast.

He also addresses claims that Chris and Steve "invented" IPMO, saying the underlying microbe methods are older and open-source; they only popularized it.

The rest of the episode is unreleased footage from Drake's 2019 trip to Korea studying GCM (gelatinase and chitinase microbes), led by Dr. Park. He tours a reactor facility with up to five heated, stirred tanks that brew microbes and pump them to farmers like a gas station. Footage covers a rice field farmed with TCM/GCM that held up through typhoons better than chemical-fed neighbors, a pepper greenhouse running five years pesticide-free, and a garlic and chive farm skipping replanting (turnover) for four years, harvesting eight times a year instead of four.

Drake is clear he isn't endorsing GCM, calling it chemical- and industrial-leaning, but says it's worth understanding to tune KNF's IMO toward similar results. He closes with an announcement: this month's members-only meeting features Spencer Karen of Royal Flush Farms in Nyssa, Oregon, and longtime KNF group admin Lauren Haney.

Questions answered

  • 5:57 Will there be office hours next Sunday? — No, Drake is taking Easter Sunday off to spend time with family and visit a neighbor's church.
  • 11:07 Did Chris and Steve really invent IPMO? — No, Drake says the microbe method predates them and is open-source public knowledge they only popularized.
  • 12:34 What is GCM and how does it relate to IPMO? — GCM stands for gelatinase and chitinase microbes, a specific brewed-microbe method Drake studied on a 2019 trip to Korea.
  • 17:46 Can I make IMO5 using fermented Bokashi compost as the nitrogen source? Is that too much lactic acid bacteria? — Drake says probably not too much, since excess protectors just get consumed as it heats up, but getting the carbon-nitrogen ratio right matters more.
  • 18:35 What is carbon-nitrogen ratio and why does it matter for compost and soil? — Compost wants about 4 to 10 parts carbon per 1 part nitrogen, soil wants around 24 to 1, and too much nitrogen burns out soil carbon.
  • 24:38 Can I use what's left after Bokashi's anaerobic fermentation in my compost? — Yes, just compost it and keep the carbon-nitrogen ratio balanced; lactic acid bacteria may even speed up composting.
  • 31:22 How do Korean farmers brew and distribute GCM? — Big heated, stirred reactor tanks brew the microbes, then transfer pumps load it into farmers' trucks like a gas station.
  • 37:47 How does GCM/TCM rice compare to conventional rice in bad weather? — The host farmer said his TCM rice held steady through typhoons and drought while chemical-fed neighbors' yields dropped, with less pesticide needed.
  • 53:08 How does GCM affect pepper farming and shelf life? — The Korean pepper farmer said GCM extended shelf life and let him grow pesticide-free for five years.
  • 57:10 Can garlic and chives keep producing without replanting (turnover) using GCM? — Yes, the farmer skipped turnover for four years and expects up to ten, harvesting eight times a year versus four for conventional growers.
  • 1:01:44 Does Drake recommend GCM for KNF growers? — No, he calls it chemical- and industrial-leaning, but worth understanding so you can tune your own IMO toward what GCM achieves.
  • 1:07:26 Who's the guest at this month's members-only meeting? — Spencer Karen of Royal Flush Farms in Nyssa, Oregon, alongside longtime KNF group admin Lauren Haney.

Topics: gcm, imo5, bokashi, cn ratio, ipmo, rice, garlic, peppers, sweet potato, jadam

KNF Office Hours is a free live Q&A every Sunday at 9 AM HST. Bring your question to pureknf.org/learn/questions or join live.

In this episode

  1. 0:00 Intro and I Ching reading
  2. 5:57 No office hours next Sunday (Easter)
  3. 8:53 KNF Support and the Jadam series
  4. 11:07 Did Chris and Steve invent IPMO?
  5. 12:34 GCM: gelatinase and chitinase microbes
  6. 13:26 Moon calendar: full moon planting advice
  7. 17:46 Bokashi compost as an IMO5 nitrogen source
  8. 18:35 Carbon-nitrogen ratio explained
  9. 24:38 Membership and donation support issue
  10. 26:35 2019 Korea GCM trip footage begins
  11. 31:22 Inside the GCM reactors
  12. 37:47 Rice field grown with TCM/GCM
  13. 40:53 Reclaimed ocean land rice farm
  14. 53:08 Pepper greenhouse using GCM
  15. 57:10 Garlic and chives without turnover
  16. 1:01:44 Wrap-up thoughts on GCM
  17. 1:07:26 Monthly meeting: Spencer Karen preview
  18. 1:10:02 Sign-off

Transcript

Auto-transcribed with Whisper. Click any timestamp to play from there.

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