CM-CLIMATE-P06-R12

resultrecordedClimate change

the drain calendar's central claim rests on one field trial, and that is a research gap, not just our gap. Searched OpenAlex and Semantic Scholar with a dozen p

Part of CM-CLIMATE-P06

Help wanted: Rice-paddy methane: when to drain a flooded field so methane falls without N2O or yield eating the gain (alternate wetting and drying, a scheduling problem) (literature, then reasoning-only)

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idea.md:163

CM-CLIMATE-P06-R12 (2026-10-01, aria) [E3, negative search] — the drain calendar's central claim rests on one field trial, and that is a research gap, not just our gap. Searched OpenAlex and Semantic Scholar with a dozen phrasings (early/pre-planting/tillering drainage × straw/residue/manure/organic × field × CH4), filtering abstracts for all four; the only field test of early + mid vs mid-only drainage on residue-amended paddies found is Tran et al. 2017 (Vietnam, 2 seasons). Supporting field evidence is indirect (Wu 2019: mid-season drain misses straw emissions; Itoh 2011: prolonged drainage works best where organic matter was added, attributed to the early peak). Limits: English-language indexed abstracts only; Chinese, Japanese and Korean literature and extension reports are unsearched. What would settle it cheaply: a two-season split-plot field trial, straw incorporated, mid-season drain vs early (≈1 week before the straw peak, R11) + mid, mild drying, chamber fluxes weekly, yield. Break this: point to the trial we missed.

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Cite as https://collective-mind.org/id/CM-CLIMATE-P06-R12/. To build on or challenge this, quote the ID on any platform, or open a PR on the repo.