Claim Ledger — R08: Living Soil & Indoor No-Till Feasibility

Version: v1.0 — signed off by Danny August 31, 2026 (approval conditional on six precision edits from ChatGPT’s editorial review, all applied; see changelog) · Brief: v1.0 FROZEN 2026-08-31 Grading: evidence status × cannabis-specificity × confidence per PROTOCOL v1.3 §3. R08’s brief-level tiers map to the specificity axis as: T1/T2 → direct, T3 → adjacent, T4 → general, ANECDOTAL flag → anecdotal. Sources: cited inline by verified tuple/DOI; registered as S-094–S-135 in SOURCE_LIBRARY (R08 section) with the URL table holding resolvable links. Every citation below passed R08’s two-check verification (see critique.md + verification/). System letters (a) persistent beds · (b) large minimal-disturbance containers · (c) recycled/re-amended media · (d) biologically-active bottle-fed hybrids, per the frozen brief’s taxonomy.

A. Soil biology indoors (mechanism)

R08-C001 — Cannabis forms functional arbuscular-mycorrhizal (AMF) associations under controlled cultivation, with measured effects on growth and cannabinoid outcomes.

Evidence status: established · Specificity: direct · Confidence: high
Sources: Seemakram et al. 2022 (FPLS 13:845794); Kakabouki et al. 2021 (Plants 10:1333 — DQI +12.4%, root length +34%, root biomass unaffected); Ahmed et al. 2023 (FPLS 14:1219836) · Agreement: both
Systems directly tested: b/d analogues (controlled containers/greenhouse); mechanism plausibly transfers to (a), but persistent-bed performance is untested. Extends R01-C034 into cannabis-direct territory.

R08-C002 — Microbial/AMF inoculation effects on cannabis are inoculum- and genotype-dependent, not universally positive: in the five-cultivar consortium trial, 3 of 5 cultivars gained floral biomass and treatment rankings differed by cultivar.

Evidence status: probable · Specificity: direct · Confidence: high
Sources: Ahmed et al. 2023; Seemakram et al. 2022 · Agreement: both

R08-C003 — A biologically colonized root zone and soluble mineral nutrition are not mutually exclusive: cannabis maintained AMF colonization and diverse microbial function while receiving full-strength mineral solution weekly.

Evidence status: probable · Specificity: direct · Confidence: high
Sources: Ahmed et al. 2023 (coir/perlite + weekly Long Ashton solution) · Agreement: chatgpt-claim, editor-verified
Notes: Direct experimental counterexample to the living-soil-vs-salts binary.

R08-C004 — The claim that synthetic fertilizers “sterilize” soil is contradicted: across 107 long-term datasets, mineral fertilization increased mean microbial biomass carbon ~15.1%, with direction modulated by soil pH (negative below ~pH 5).

Evidence status: established · Specificity: general · Confidence: high
Sources: Geisseler & Scow 2014 (Soil Biol. Biochem. 75:54–63); Ramirez et al. 2012 (GCB 18:1918–1927 — cross-biome 28-soil study: N additions alter communities) · Agreement: both
Notes: Fertilizer regime does change community composition — the calibrated claim is “alters,” never “kills.” Myth M5 verdict.

R08-C005 — Cannabis-specific AMF-suppression thresholds under high fertility have not been measured; the widely quoted pore-water P cutoffs are unanchored.

Evidence status: unknown · Specificity: direct · Confidence: high (that the measurement is absent)
Sources: Gemini’s threshold attribution withdrawn (Treseder 2008 is an N meta-analysis); no replacement found · Agreement: post-correction convergence
Notes: General-agriculture P-suppression of AMF remains probable (R01-C034 sphere); the cannabis numbers don’t exist yet.

B. Nutrition & media

R08-C006 — Organic fertilization can carry an indoor cannabis crop to harvest, but in the one controlled indoor comparison mineral fertigation averaged 23.7 vs 19.6 g/plant inflorescence dry matter (≈+21%); organic plants had higher CBD concentration yet lower total CBD yield (1,197 vs 1,319 mg/plant), attributed by the authors to poorer late-flowering nutrient acquisition from the organic source.

Evidence status: probable (single controlled study) · Specificity: direct · Confidence: high
Sources: Massuela et al. 2023 (FPLS 14:1233232 — full-text verified) · Agreement: both (Gemini post-correction)
Notes: Concentration ≠ yield is the teachable core. Feeds M1’s verdict.

R08-C007 — Liquid organic fertilizer response in coir substrates is rate- and substrate-dependent: optima ≈389 mg/L N (vegetative) and 212–261 mg/L N (flowering), with cannabinoid dilution at higher rates; in one of two substrates the highest tested rate maximized yield.

Evidence status: probable · Specificity: direct · Confidence: high
Sources: Caplan, Dixon & Zheng 2017a (HortScience 52(9):1307–1312) and 2017b (52(12):1796–1803) · Agreement: both
Notes: The 55.5–62.3 g/plant range circulated from 2017b remains unreconstructed — do not quote it (SOURCE_LIBRARY caution).

R08-C008 — Excess phosphorus is wasted or harmful in cannabis: floral yield saturates at ~30 mg/L P (80% of max) with cannabinoid concentration reductions up to 25% at high P in one study, while a response-surface study predicts a 59 mg/L optimum; raising root-zone P 15→90 mg/L increases tissue P without yield or cannabinoid gains.

Evidence status: established (direction) / disputed (exact optimum, 30 vs 59 mg/L) · Specificity: direct · Confidence: high
Sources: Shiponi & Bernstein 2021 (FPLS 12:657323); Bevan et al. 2021 (FPLS 12:764103); Hershkowitz, Westmoreland & Bugbee 2025 (FPLS 16:1433985) · Agreement: both
Notes: Removes the rationale for P-heavy “bloom-boosted” living-soil recipes; the 30-vs-59 disagreement is preserved, not averaged.

R08-C009 — Cannabis terpene-production capacity and baseline chemotype are strongly genetically structured (TPS gene family); environment and root-zone treatments modulate expression within that genetic architecture.

Evidence status: established · Specificity: direct · Confidence: high
Sources: Booth & Bohlmann 2019 (Plant Science 284:67–72); Zager et al. 2019 (Plant Physiol 180:1877–1897 — editor-corrected tuple) · Agreement: both
Notes: No verified evidence attributes superior terpene/sensory quality to living-soil practice specifically (searched and largely empty — C030 sphere).

R08-C010 — Container media are correctly evaluated by measured physical/chemical properties (air-filled porosity, total porosity, water relations, EC, buffering), not by recipe labels or fixed ingredient percentages; constituents differ dramatically in behavior.

Evidence status: established · Specificity: adjacent · Confidence: high
Sources: Carlile, Cattivello & Zaccheo 2015 (Vadose Zone J 14(6), DOI 10.2136/vzj2014.09.0125); Bugbee 2002 (Compost Sci Util 10(1):92–98); Bilderback et al. 2005 (HortTech 15:747–751) · Agreement: both
Notes: R01-C033’s practices-not-labels applied to media. Direct consumer: Grow Your 6 Ch 4.

R08-C011 — No evidence-based universal compost percentage exists for container cannabis media: the archive’s “30%+ in soil mass” spec is unevidenced AND the confident counter-spec (“>20–30% v/v fails”) is contradicted by verified compost literature showing optimal ornamental growth at 50–100% biosolids compost; tolerance varies by feedstock, crop, and denominator (mass vs volume are not interchangeable).

Evidence status: unknown (any universal spec) / established (that property-based evaluation replaces percentage specs) · Specificity: adjacent · Confidence: high
Sources: Bugbee 2002; Carlile et al. 2015 · Agreement: editor synthesis after Gemini’s threshold withdrawal
Notes: Myth M10 verdict — unsupported in both directions. The cycle’s best verification story; archive correction flag for the 2018/2020 handouts.

R08-C012 — Whether biological mineralization alone can meet peak flowering nutrient demand is volume-dependent as a modeled inference only: mineralization kinetics are measured in adjacent systems (feather meal ~56–66% N over 8 weeks; pelleted poultry manure plateaus 41–63% over 52 weeks), but no direct trial demonstrates any bed volume sustaining indoor cannabis without soluble supplementation across cycles.

Evidence status: traditional-practice (large-bed sufficiency) / unknown (demonstrated capacity) · Specificity: adjacent · Confidence: medium
Sources: Hartz & Johnstone 2006 (HortTech 16:39–42); Dion et al. 2020 (CJSS, 10.1139/cjss-2019-0056); Gemini’s demand-vs-volume table reclassified as modeled [ANECDOTAL] · Agreement: post-correction convergence
Notes: M1 verdict: unsupported as universal; conditionally plausible in large beds, undemonstrated.

C. Media reuse & multi-cycle dynamics

R08-C013 — Adjacent-CEA evidence shows organic growing media can be reused across multiple crop cycles without inevitable yield loss or physical collapse: peat through three strawberry uses (no measured physical deterioration; yield equal to virgin), coir into a subsequent lettuce crop (no yield loss), and reused peat in Lilium (measurable physical shifts without production loss).

Evidence status: established · Specificity: adjacent · Confidence: high
Sources: Vandecasteele et al. 2024 (Waste Mgmt 190:296–305); Machado et al. 2023 (Horticulturae 9:1080); Jiménez et al. 2012 (CSSPA 43:243–250) · Agreement: both
Notes: Evidence for reuse, not for undisturbed no-till, and all systems were actively managed.

R08-C014 — Successful media reuse is an actively engineered practice, not a self-maintaining one: reused media retain enough residual N/P/K that fertilization must be re-budgeted, fertigation endings change what carries over, and phytosanitary treatment (e.g. steaming) is used to control carryover of pathogens and weed propagules.

Evidence status: established · Specificity: adjacent · Confidence: high
Sources: Vandecasteele et al. 2020 (J Clean Prod 276:124128); Vandecasteele et al. 2024 · Agreement: both
Notes: Steam sanitation is unavailable to a living no-till bed by definition — the design tension behind C016.

R08-C015 — “The soil gets better every cycle, indefinitely” is unsupported — and so is its inverse (“reused organic media inevitably deteriorates”): finite-duration evidence shows properties can remain functional, shift without harming output, or create management problems depending on formulation and management.

Evidence status: unknown (both directions beyond ~3 demonstrated cycles) · Specificity: adjacent · Confidence: high
Sources: C013/C014 source set · Agreement: both
Notes: M2 verdict. Archive correction flag: the 2018 handout’s “soil literally becomes better and richer over time” and Grow Your 6 Ch 11’s framing both need this calibration.

R08-C016 — A persistent undisturbed root zone preserves biology in both directions: beneficial infrastructure (networks, suppressive potential) and pest/pathogen reservoirs. Which side dominates in cannabis is unquantified; disease suppression, where documented, is antagonist- and pathogen-specific rather than an automatic organic-soil property.

Evidence status: probable (the trade-off’s reality) / unknown (net direction) · Specificity: direct + adjacent · Confidence: high
Sources: Punja et al. 2019 (FPLS 10:1120); Scott & Punja 2023 (CJPP 45:238–252); Vandecasteele 2020 (sanitation rationale) · Agreement: both
Notes: Failure-mode centerpiece; brief question D10.

R08-C017 — Root pathogens (Fusarium, Pythium, Globisporangium) are not a soil-specific problem: pathogenic isolates were recovered from coconut coir and rockwool in commercial marijuana production.

Evidence status: established · Specificity: direct · Confidence: high
Sources: McGehee & Raudales 2021 (Front Agron 3:706138); Punja et al. 2019 · Agreement: both
Notes: Kills the symmetric myth that inert media = clean media.

D. Pathology, pests & compliance

R08-C018 — Hop latent viroid infection reduces cannabis floral biomass and secondary metabolites by 12–42%; documented transmission routes include seed (58–80% in one study) and mechanical/tool transfer; relative primacy of routes is unresolved.

Evidence status: established (impacts, routes) / disputed (route primacy) · Specificity: direct · Confidence: high
Sources: Punja et al. 2023 (CJPP 46:174–197); Atallah, Yassin & Verchot 2023 (Viruses 16:30); Punja et al. 2025 (Plants 14:830) · Agreement: gemini-topic, editor re-anchored magnitudes
Notes: Gemini’s original 30–50%/20–50% ranges retired; ledger carries the papers’ own numbers.

R08-C019 — HpLVd decontamination is matrix-dependent, and no tested chemical works on infected plant tissue: undiluted sap on tools/surfaces requires 10% (2 min) or 20% bleach; 5–10% suffices in dilute aqueous matrices; 600–1,000 ppm HOCl is effective; 2% Virkon S fails except in contaminated water; nothing tested (bleach 5–20%, HOCl, Virkon, Zerotol) degraded viroid RNA in whole roots or intact leaves. Infected root fragments persisting in an undisturbed bed therefore could not be chemically remediated in place with the agents and concentrations tested.

Evidence status: established · Specificity: direct · Confidence: high
Sources: Punja et al. 2025 (full text, PMC11902214; verbatim quotes in verification/R08-verify-corrections.md §9a) · Agreement: editor synthesis (both researchers’ versions were partially wrong; so was the editor’s first correction)
Notes: The single most no-till-consequential finding in R08: sanitation-by-reset is structurally unavailable to system (a).

R08-C020 — Rice root aphid (Rhopalosiphum rufiabdominale) is a documented cannabis pest in North American production; soil/root-zone pests of this kind are the acute-failure candidates that persist under mulch in undisturbed media.

Evidence status: probable · Specificity: direct · Confidence: high
Sources: Cranshaw & Wainwright-Evans 2020 (JIPM 11(1), DOI 10.1093/jipm/pmaa008 — editor-corrected) · Agreement: gemini-claim, editor-verified via corrected DOI

R08-C021 — Compost-tea disease suppression is real but heterogeneous (0 to >80% by pathogen, crop, feedstock, and preparation); sugar additives during brewing can stimulate pathogen proliferation; preparation remains insufficiently standardized for universal recommendations; no cannabis-specific replicated reliability evidence exists.

Evidence status: established (heterogeneity) · Specificity: general · Confidence: high
Sources: Scheuerell & Mahaffee 2004 (Phytopathology 94:1156–1163) and 2002 (CSU 10(4):313–338); Idbella et al. 2026 (Appl Soil Ecol 225:107192 — 39 studies); Yin et al. 2025 (ETI 38:104137); Pant et al. 2012 (Sci Hortic 148:138–146) · Agreement: both
Notes: M7 verdict — “reliably” is the word that fails. Idbella’s “516 cases” figure unconfirmed; do not quote.

R08-C022 — Microbial compliance outcomes depend on the assay: non-selective total yeast-and-mold plating counts benign and beneficial organisms alongside pathogens, penalizing biologically active media in TYMC-cap jurisdictions (<10⁴ CFU/g), whereas pathogen-specific qPCR regimes (e.g. California’s four-Aspergillus rule) do not; quantified living-soil failure-rate data do not exist.

Evidence status: probable (assay bias) / unknown (failure-rate magnitudes) · Specificity: direct · Confidence: medium (regulatory details are jurisdiction- and date-sensitive; date-stamp 2026)
Sources: McKernan et al. 2016 (F1000Res 5:2471) and 2021 (F1000Res 10:624) — editor-corrected DOIs · Agreement: gemini-claim, editor re-anchored
Notes: Gemini’s “15–35% failure rates” withdrawn as unsourced.

R08-C023 — Cannabis/hemp accumulates heavy metals with roots retaining the most and reproductive tissues the least (leaf-vs-stem ordering varies by metal and study); repeated amendment inputs to multi-cycle beds motivate periodic media and flower testing.

Evidence status: probable · Specificity: adjacent (field hemp) · Confidence: medium
Sources: Angelova et al. 2004 (ICP 19:197–205 — roots>stems>leaves>seeds in hemp); Linger et al. 2002 (ICP 16:33–42 — aboveground: leaves highest) · Agreement: both, editor-corrected ordering
Notes: Multi-cycle accumulation in living beds specifically: unmeasured (gap).

R08-C024 — Organic container media buffer pH through exchange capacity, but long-term substrate pH in container systems is driven primarily by irrigation-water bicarbonate alkalinity (~100 mg/L CaCO₃ is the standard management threshold); buffering does not make pH management unnecessary.

Evidence status: probable · Specificity: adjacent · Confidence: high
Sources: Argo & Fisher 2002, Understanding pH Management for Container-Grown Crops (Meister, ISBN 1892829134); Carlile et al. 2015 · Agreement: both (mechanism), editor calibration
Notes: M9 verdict: mechanism real, operational conclusion overclaimed. Archive flag: Grow Your 6 Ch 6 “living soil buffers pH for you.”

E. Quality & flushing

R08-C025 — No verified evidence attributes superior cannabinoid potency, terpene quality, sensory character, or consumer preference to living-soil/no-till practice as a system; fertility and microbial treatments can shift concentrations and ratios, but attribution to the bundled practice package is absent from the literature.

Evidence status: unknown (searched and largely empty) · Specificity: direct · Confidence: high
Sources: absence finding across both runs; C006/C008/C009 hold the verified component effects · Agreement: both
Notes: M4 verdict. Quality decomposes five ways per the brief; no dimension has living-soil-attributable evidence.

R08-C026 — In the one blinded flushing trial located (industry, non-peer-reviewed), 0–14-day pre-harvest flushes produced no significant differences in flower N/P/K/Ca/Mg/S and no panel preference for flushed flower (the 0-day flush trended best on flavor).

Evidence status: probable · Specificity: direct · Confidence: medium (single industry white paper; authors Wedryk, Wall & Bennett — the circulating “Stemler et al.” attribution is fabricated)
Sources: Rx Green Technologies 2019 flushing trial (URL in SOURCE_LIBRARY; industry-labeled) · Agreement: gemini-claim, editor-verified
Notes: R06 handoff (flushing is R06’s question; ledgered here because it collided with archive doctrine in three documents).

F. Environment & economics

R08-C027 — Indoor cannabis carbon intensity (2,283–5,184 kg CO₂e/kg dried flower) is dominated by electricity/HVAC; growing media are a minor indoor term but the dominant outdoor-container term — up to ~75% of GWP (61.8–110.7 kg CO₂e/kg across N treatments) in the single outdoor field LCA identified. Consequently media reuse is a significant carbon lever outdoors and a minor one indoors, where (modeled inference) a ~2% yield penalty would erase the media-reuse savings. (CORRECTED 2026-09-02, cross-model audit: prior text gave “25–38% in one LCA and up to ~75% in another” — the 25–38% figure belongs to the paper’s metal-depletion category, not GWP, and the “second LCA” was the same paper double-registered as S-132/S-003. See verification/audits/R08-audit-2026-09-02.md.)

Evidence status: established (figures) / probable (the modeled break-even) · Specificity: direct · Confidence: high
Sources: Summers et al. 2021 (Nat Sustain 4:644–650); Desaulniers Brousseau et al. 2024 (ACS AST 4:690–699) = R05’s S-003 (S-132 was a duplicate registration, now retired); Mills 2025 (One Earth 8:101179) · Agreement: both (Gemini’s original 65–75% figure stands; the verify-B “correction” was the error)
Notes: The narrow R05-C012 handoff question, answered: reuse-for-sustainability is real but system-dependent, and indoors it is hostage to yield.

R08-C028 — Certified organic/living-soil commercial production exists at licensed scale (e.g. No Till Kings, OCal-certified indoor; Coast Mountain Cannabis, Pro-Cert; Rubicon Organics/Simply Bare, FVOPA greenhouse; Stewart Farms, aquaponic living beds) — refuting “inherently incompatible with commercial indoor production” as an existence claim, while establishing nothing about competitiveness.

Evidence status: traditional-practice · Specificity: direct · Confidence: high (existence) — all operational specifics anecdotal
Sources: producer sites verified live 2026-08-31 (Coast Mountain, Rubicon, Stewart Farms, No Till Kings); Sweet Dirt/Habitat references stale; whistlercannabis.com dead · Agreement: both (post-correction)
Notes: M6 verdict. Coast Mountain’s “40+ consecutive cycles” remains an operator claim — anecdotal, uncorroborated.

Evidence status: unknown · Specificity: direct · Confidence: high
Sources: convergent searched-and-empty declarations, ChatGPT run + Gemini correction round · Agreement: both
Notes: M8 verdict lives here. Practitioner cost estimates exist (Gemini’s table, anecdotal modeled), usable only as hypothesis material.

R08-C030 — Keystone. No controlled, replicated, multi-cycle study was identified that compares persistent indoor no-till cannabis beds against conventional substrate systems on yield/area/time, chemistry, sanitation, labor, or economics. In the literature located for R08, the central claims of indoor no-till discourse therefore rest on component evidence and extrapolation rather than demonstrated system-level outcomes.

Evidence status: unknown (verified absence) · Specificity: direct · Confidence: high
Sources: independent searched-and-empty findings, both researchers; editor confirms no counterexample surfaced in 46-source verification · Agreement: both
Notes: R08’s synthesis spine: the biology is much better demonstrated than the production system. Sets the research agenda (Wave 4 soil-ecology reports feed this).

R08-C031 — Operating-condition and failure-mode knowledge for indoor no-till (bed volumes, irrigation set-points, reset triggers, cumulative salinity/P drift trajectories, cover-crop HVAC penalties) currently exists only as practitioner rules-of-thumb and modeled inference; no cannabis-CEA measurements were identified for these operating parameters in the R08 search.

Evidence status: traditional-practice / unknown (measured versions) · Specificity: direct · Confidence: high (that this is the state of knowledge)
Sources: Gemini’s operating tables, reclassified anecdotal post-correction; ChatGPT’s parallel gap list · Agreement: both
Notes: Preserved as hypothesis inventory for the learning library and Grow Companion — labeled lore, not findings. Brief question D11’s honest answer.

Myth verdict index (details in critique.md §7)

M1 unsupported-universal (C006, C012) · M2 unsupported both directions (C015) · M3 unsupported (C012, C016) · M4 unsupported (C025) · M5 contradicted-literal (C004) · M6 contradicted-as-existence (C028) · M7 “reliably” contradicted (C021) · M8 unsupported (C029) · M9 mechanism-real/conclusion-overclaimed (C024) · M10 unsupported both directions (C011)

Changelog

v1.0 (2026-08-31) — Danny sign-off after ChatGPT’s editorial pass. Six precision edits applied: C001 systems bounded to tested analogues (transfer rule); C009 “dictated”→“strongly genetically structured”; C019 remediation conclusion bounded to agents/concentrations tested; C023 kelp-As/rock-phosphate-Cd examples removed (unprovenance); C029/C030 “exists”→“was identified” (absence claims describe the search record, not omniscience); C031 same absence-language treatment. S-094–S-135 registered.
v0.1 (2026-08-31) — 31 claims drafted by editor from verified material: ChatGPT run (clean verification) + Gemini run as re-anchored through the correction round.

Source file in the research repository: research/reports/R08-living-soil-indoor-no-till/ledger.md. Private links, some names and practitioner-record passages are removed from the public copy, and broken character encoding from file conversion is repaired; nothing else is changed.