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LAB Temperature Fixes, Slug-Eating Nematodes, Worm Bin Slugs

Dr. Drake opens with the I Ching reading, then shows the AI tools he built this week to auto-transcribe and chapter the podcast using Whisper and Llama 3.2.

Farmer questions cover LAB that sank instead of floating (a sign of cold temperature; LAB likes 75-82°F), volunteer rhubarb in a garden patch, slugs in a worm bin, and slug-eating nematodes as a natural pest control paired with IMO.

The second half returns to Master Cho's poultry training series: bacterial and mineral water systems run every three hours for 15 minutes, cleaning containers with vinegar or LAB, and a tour of Korean natural farming co-ops near Muju that cycle cow manure into chicken feed and built 70 centimeters of soil in four years.

Questions answered

  • 19:29 My LAB took a week to separate and most sank instead of floating on top — what went wrong? — Your temperature was too low; LAB grows optimally around 75-82°F, and cooler temps just slow separation.
  • 20:26 How can I keep my LAB culture warmer at home? — Try a shop light nearby, or set it in your oven near the pilot light if you have one.
  • 23:07 I think I have rhubarb growing wild in my garden patch — will it keep coming back if I harvest it? — Yes, if the rhizome stays in the ground it comes back; treat it as a gift, ferment it into plant juice, and reapply it to your garden.
  • 24:39 I have slugs in my worm bin — can I use beer traps without hurting the worms? — Be careful, alcohol kills worms; beer's low alcohol content may be okay, but dilute it heavily before adding it.
  • 28:46 What are slug-eating nematodes and how do they work? — They infect slugs through the nervous system, cause paralysis and death, then break down the tissue; IMO applications bring these nematodes into your soil naturally.
  • 34:42 How often did Master Lee run his bacterial and mineral water systems? — Every three hours for 15 minutes, dropping water about two meters onto rocks to oxygenate it before feeding the animals.
  • 37:40 What do Korean natural farmers use to clean their containers? — Vinegar or LAB both work well, vinegar is the better biological cleaner, and some use sodium hypochlorite bleach made from salt and electricity.
  • 40:16 Is 20°C too cold for culturing LAB or IMO? — Yes, 20°C is about 68°F; aim for at least 75°F for good cultivation.
  • 42:09 What are the natural farming co-ops like near Muju, Korea? — Groups of farmers share data and techniques, growing onions and tomatoes and raising cattle and chickens together.
  • 43:39 How do these Korean farmers cycle manure between animals? — Cow manure is applied to pasture and also mixed into chicken feed, cycling nutrients between the two animal systems.
  • 45:48 How much soil did the farmer build using natural farming methods? — After four years of natural farming he built about 70 centimeters of good soil.
  • 49:45 Is it worth getting a higher yield if it degrades your soil? — No; Drake compares it to spending down your bank principal, the real win is improving soil while also raising yield.

Topics: lab, imo, rhubarb, worm bin, beer trap, slug-eating nematodes, bacterial mineral water, container cleaning, vinegar, soil building, co-op farming, fermentation

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 I Ching Reading & Welcome
  2. 6:15 Automating Office Hours With AI Transcription
  3. 19:29 Q&A: LAB Separation And Temperature
  4. 23:07 Rhubarb Regrowth And Fermenting Volunteer Plants
  5. 24:39 Slugs In A Worm Bin And Beer Traps
  6. 28:46 Slug-Eating Nematodes For Pest Control
  7. 33:11 Master Cho Video: Poultry Training Episode 6
  8. 34:42 Bacterial Water And Mineral Water Tanks
  9. 37:40 Cleaning Containers: Vinegar, LAB, Bleach
  10. 40:16 Culture Temperature: 20C Is Too Cold
  11. 42:09 Korean Natural Farming Co-ops In Muju
  12. 43:39 Cycling Cow Manure Into Chicken Feed
  13. 45:48 70 Centimeters Of Soil After Four Years
  14. 49:45 Soil Health Vs Yield: The Real Point
  15. 52:07 Earthworms And IMO Build Soil Exponentially
  16. 1:01:37 Christoph's Garden Tour: No-Till And Wood Chips
  17. 1:11:14 Closing And Thanks

Transcript

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

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