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800 Acres of Macadamia on KNF for $21 an Acre a Year

Chris Trump, Macadamia nut farmer (family farm, 800 acres), Hawaiʻi · United States (Hawaiʻi)

Chris Trump, who farms 800 acres of macadamia nuts in Hawaiʻi with his family, reports six years of feeding the whole orchard with natural farming only. He says the full program, labor included, costs $21 per acre per year, and that 98% of diseased trees recovered. He also explains why he moved from huge solid Microbes (IMO4) piles to a sprayed liquid Microbes (liquid IMO) program after a storm hit a 50-ton pile.

What they found

The question

Can natural farming alone feed and protect a large commercial macadamia orchard, and at what cost?

How they tested it

Family-run 800-acre macadamia orchard in Hawaiʻi, natural farming used for about six years, starting small and expanding. No control block, no plot design, no yield figures given; results are the grower's own observations. Location of the farm on the islands not stated.

What was compared
  • Solid Microbes (IMO4) in large piles — Made in batches of about 50 tons with a turner; the speaker says he made 150,000 lb of IMO4 himself. One pile was rained on for a week and had to be spread before it finished.
  • Liquid Microbes (liquid IMO) — Brewed from Master Cho's soil treatment solution (SOS) recipe; 30+ batches tested and checked under a microscope for a balanced or fungal-leaning culture. Slide: a highly fungal liquid IMO sprayed three times a week, covering all 800 acres three times a year, sprayed in the afternoon. Dilution and per-acre rate not stated.
  • Farm-waste compost inoculated with IMO — Wood chips and macadamia shell inoculated with IMO and turned with equipment. IMO3 also made on macadamia nut waste (shell and kernel); IMO2 collected from wild native forest.
Results
  1. Whole nutrition program costs $21 per acre per year

    Includes making the solutions, labor at a high local wage, tractors and fuel to apply them (slide: 'with all labor included').

    ▶ 2:11 Said and shown on the slides

  2. 98% of diseased trees recovered after six years

    The speaker calls fungal IMO4 'a viable cure for Phytophthora'. No tree counts, controls or lab confirmation of the disease were shown.

    ▶ 9:24 Said and shown on the slides

  3. Very little pest pressure, with predatory insects increasing

    Observed by the grower; no counts given.

    ▶ 1:42 Said and shown on the slides

  4. Yields and nut diameter increasing while costs stay flat

    Nut size growing enough that the husking equipment may need changing. No numbers given.

    ▶ 10:04 Said and shown on the slides

  5. Leaf yellowing and nutritional stress gone

    Grower observation.

    ▶ 9:59 Said and shown on the slides

  6. Solid IMO4 beats liquid IMO, but large piles need a roof

    Quality holds in 50-ton piles, but a week of rain ruined one batch; he concludes a covered structure is needed unless the climate is dry.

    ▶ 4:05 Said and shown on the slides

Hold it loosely
  • One farm's report, no control blocks, no statistics.
  • No yield, nut-size or tree-count numbers shown; 98% recovery is the grower's own count with no method given.
  • Phytophthora diagnosis and the 'cure' claim are not backed by lab data in the talk.
  • The $21/acre cost is local to Hawaiʻi in 2016 and no breakdown was given.
  • Liquid IMO dilution and application rate not stated.
For your farm
  • Big IMO4 piles can keep quality, but protect them from rain with a roofed structure, or move to liquid IMO.
  • Check your Microbes under a microscope; for trees, aim for a balanced or fungal-leaning culture.
  • What you start with decides the result: collect from diverse, wild forest.
  • Farm waste such as nut shell and wood chips can be turned into IMO-inoculated compost.
  • Natural farming can be run at orchard scale at low cost per acre, according to this grower.

Next to Master Cho's teaching

  • Agrees

    Liquid IMO from the soil treatment solution recipe Cho's course material lists the soil treatment solution (SOS) as a blend; Cho in Hawaiʻi also showed liquid IMO4 by soaking IMO4 in water, and the speaker credits Cho's book for his recipe.

    notes: cho-hawaii-2016-2017 — Recipes & methods demonstrated

  • Agrees

    Afternoon application Cho's recipe book says to apply IMO4 2–3 hours before sunset, which fits spraying in the afternoon.

    Cho recipe book (scan), p. 6

  • Agrees

    Cover piles against rain Cho tells growers to cover IMO piles so they are not drenched in the rainy season, the same lesson the speaker learned with a 50-ton pile.

    2018/Cho - advanced hawaii/master cho 2018 1-2 @ 1:44:24 (translated)

  • Agrees

    Solid IMO4 is best for the soil foundation The CGNF summary says IMO3 or IMO4 is used in a liquid 'tea' and IMO4 is best as a top dress for the soil foundation, matching his view that solid beats liquid.

    cho_solutions, p. 10–11

  • Goes further

    IMO4 as a cure for Phytophthora Cho teaches IMO for soil health and against successive-cropping disorder; a direct cure claim for Phytophthora goes beyond what the search found in his texts.

    Cho recipe book (scan), p. 6

“Our entire nutrition program costs $21 per acre per year.”

▶ 2:36

“Liquid IMO is very good, but the solid is still the best.”

▶ 5:48

“He said natural farming is not finished.”

▶ 11:21

“Capitalism can be the Trojan horse that we use to spread natural farming across the world.”

▶ 12:22

In this talk

  1. 0:00Intro and the 800-acre farm
  2. 1:13No other inputs, no disease, $21 an acre
  3. 2:48Solid IMO4 at 50-ton scale
  4. 3:34The storm and the case for a roof
  5. 4:57Switching to liquid IMO
  6. 6:35Microscope checks for fungi
  7. 7:18Start with good collections
  8. 8:10Where they are now: liquid spray and compost
  9. 9:24Results after six years
  10. 10:37Wisdom, not knowledge
  11. 11:55Vision: help large farms copy the success

Transcript

Transcribed and checked by hand against the recording. Click any time to play from there.