R08 Ledger in Plain English — Living Soil & Indoor No-Till

Companion to Claim Ledger v1.0 (signed off 2026-08-31). Each entry restates the claim for a general reader, says how solid it is in plain words, and links the evidence. Full citations and grading live in ledger.md and SOURCE_LIBRARY (S-094–S-135).

How to read “how solid”: Solid = multiple good studies agree. Promising = real evidence, limited replication. Grower wisdom = widely practiced, little formal study. Contested = credible evidence disagrees. Honestly unknown = nobody has measured it — and saying so is the finding.

The biology (C001–C005)

• C001 — Cannabis really does partner with mycorrhizal fungi. Solid, and shown in cannabis itself, in controlled pots and greenhouses. Not yet shown in a permanent no-till bed. Seemakram 2022 · Kakabouki 2021 · Ahmed 2023
• C002 — Which microbe, which cultivar, matters a lot. Promising. In the best trial, 3 of 5 cultivars gained flower mass from inoculation and the rankings flipped between cultivars. There is no one magic inoculant. Ahmed 2023
• C003 — Living roots and mineral feeding are not enemies. Promising. Plants stayed biologically colonized while being fed full-strength mineral solution weekly, in the same experiment. Ahmed 2023
• C004 — “Synthetic nutrients kill the soil” is false as stated. Solid (from broad agriculture). Across 107 long-term datasets, mineral fertilizer increased average soil microbial biomass ~15%. Fertilizers change soil communities; they don’t sterilize them. Geisseler & Scow 2014
• C005 — Does high fertility shut down the fungi in cannabis? Nobody has measured the threshold. Honestly unknown. The mechanism is real in general agriculture; the cannabis numbers don’t exist.

Feeding the plant (C006–C012)

• C006 — Organic feeding finished the crop, but yielded ~21% less in the one head-to-head indoor test. Promising (one good study). Organic flower had a higher CBD percentage but less total CBD per plant — concentration is not yield. The gap traced to nutrients arriving too slowly late in flowering. Massuela 2023
• C007 — Organic liquid feeding has measured sweet spots. Promising: about 389 mg/L N in veg and 212–261 mg/L N in flower, depending on the substrate. Caplan 2017 veg · flowering
• C008 — Extra phosphorus doesn’t buy you anything. Solid direction: yield saturates somewhere around 30–59 mg/L P (two good studies disagree on the exact number — we keep the disagreement), and pushing to 90 mg/L just loads the tissue. Skip the P-heavy bloom boosters. Shiponi & Bernstein 2021 · Bevan 2021 · Hershkowitz 2025
• C009 — Genetics writes the terpene menu; growing adjusts the portions. Solid. Root-zone treatments can shift ratios within what the cultivar’s genes allow. Booth & Bohlmann 2019 · Zager 2019
• C010 — Judge a soil mix by measurements, not recipes. Solid (container science). Air porosity, water holding, salts, buffering — those predict performance. Ingredient percentages don’t. Carlile 2015 · Bugbee 2002
• C011 — There is no correct compost percentage. Honestly unknown in both directions. The old “30%+ compost” teaching is unevidenced — and so is the confident counter-claim that more than 20–30% always fails (the study cited to prove that actually grew ornamentals happily at 50–100% compost). Also: percent by weight and by volume are completely different mixes.
• C012 — Can a big enough bed feed a cannabis plant with biology alone? Grower wisdom plus math — not a demonstrated result. The mineralization rates are measured in other crops; no cannabis trial has shown any bed volume doing it across cycles without supplements.

Reusing soil (C013–C017)

• C013 — Reusing growing media works — in managed systems. Solid, from adjacent crops: peat reused through three strawberry crops with no yield loss and no physical breakdown; coir reused for lettuce, same story. Vandecasteele 2024 · Machado 2023 · Jiménez 2012
• C014 — But reuse is a job, not a gift. Solid. Reused media come pre-loaded with nutrients (feed less), and commercial reuse systems steam-sanitize between crops — a tool a living no-till bed can’t use without killing the biology it exists to keep. Vandecasteele 2020
• C015 — “The soil gets better forever” is unproven — and so is “reused soil inevitably fails.” Honestly unknown past a few demonstrated cycles, in both directions.
• C016 — A permanent root zone keeps everything: the good biology AND the pests and diseases. Promising that the trade-off is real; unknown which side wins in cannabis. Disease suppression, where shown, comes from specific antagonist organisms — it’s not an automatic organic perk. Scott & Punja 2023
• C017 — Root diseases hit “clean” hydro media too. Solid: Pythium and Fusarium were pulled out of coco coir and rockwool at commercial grows. Ditching soil doesn’t ditch disease. McGehee & Raudales 2021

Pests, viroid & testing (C018–C024)

• C018 — Hop latent viroid is a serious, measured threat. Solid: 12–42% losses where it takes hold; it spreads through seed (58–80% in one study) and through tools. Which route matters most is still contested. Punja 2023 · Atallah 2023
• C019 — And you cannot bleach it out of living roots. Solid, and it’s the report’s most practical finding: strong bleach cleans tools (10–20% for sappy surfaces), but nothing tested — bleach, HOCl, Virkon, Zerotol — killed the viroid inside root or leaf tissue. If infected roots are woven through your permanent bed, no tested chemical rescues that bed in place. Punja 2025
• C020 — Rice root aphids are a real cannabis pest that lives exactly where no-till doesn’t look: under the mulch, in the root zone. Promising. Cranshaw & Wainwright-Evans 2020
• C021 — Compost tea sometimes works and often doesn’t. Solid on the variability: suppression ranges from zero to strong depending on pathogen, compost, and brewing; sugar additives can even feed the bad guys. Nobody has shown it reliable in cannabis. Scheuerell & Mahaffee 2004 · Idbella 2026
• C022 — Lab tests can punish living soil for being alive. Promising: standard yeast-and-mold plate counts can’t tell friendly microbes from dangerous ones, so biologically rich flower fails “total count” caps that DNA-based (qPCR) rules would pass. How often that actually happens: unmeasured. McKernan 2016 · 2021
• C023 — Hemp pulls metals from its environment, mostly into roots. Promising (field hemp studies). Reused beds that get amended over and over deserve periodic media and flower testing. Angelova 2004 · Linger 2002
• C024 — Living soil buffers pH — it doesn’t manage pH for you. Promising: over time your water’s alkalinity drives bed pH more than the soil’s buffering does. Test your water. (Argo & Fisher’s container-pH framework.)

Quality, money & the big picture (C025–C031)

• C025 — Nobody has shown living soil makes better flower. Honestly unknown: no controlled study attributes higher potency, richer terpenes, better taste, or consumer preference to the living-soil system itself. (Nobody has shown the reverse either.)
• C026 — The only blinded flushing trial found flushing changed nothing — not the flower’s minerals, not the taste panel’s preference (unflushed actually trended better). One industry study, not peer-reviewed; the full flushing question belongs to R06. Rx Green trial
• C027 — Reusing soil is a big climate win outdoors and a small one indoors. Solid: indoor footprints are ~2,300–5,200 kg CO₂e per kg of flower, almost all electricity — so indoors, even a ~2% yield dip would wipe out everything soil reuse saves (that last part is arithmetic, not an experiment). Summers 2021 · Desaulniers Brousseau 2024 · Mills 2025
• C028 — Commercial living-soil grows exist and are certified. Grower-verified fact (company sites, not studies): OCal, Pro-Cert, and FVOPA certified operations run living beds at licensed scale. Existing is not the same as out-competing.
• C029 — Market share, price premium, true costs: no real data was found. Honestly unknown — searched by two independent researchers and empty. Every confident number circulating on these came apart under verification.
• C030 — THE HEADLINE: no study has ever compared a permanent indoor no-till bed against a conventional grow across multiple cycles. Not for yield, quality, disease, labor, or cost. Every strong claim about the system — from either tribe — outruns the evidence. The biology is proven; the production system is still a hypothesis its practitioners are living.
• C031 — Everything growers “know” about running these beds — volumes, watering targets, when to reset — is experience and estimation, not measurement. Valuable, preserved here as grower wisdom, waiting for someone to run the actual numbers.

v1.0 · 2026-08-31 · derived from ledger v1.0 with Danny’s sign-off