Files
seed-mcp/corpus/ohio_ocpt_trials/ocpt-corn-2025-nw-3yr-upper-sandusky.md
T
claude 54094a0d43 Add university-extension variety trials: Illinois VT + Iowa ICPT + Ohio OCPT (+123 trial docs)
Independent third-party performance data — land-grant programs that test every
entered brand side-by-side with replication + LSD stats. This is the legitimate
way to get Pioneer / DEKALB / Brevant / Channel performance the corpus can't
scrape directly (data_type=trial, results[] shape; falls through the trial
chunker).

- illinois_vt_trials (30 docs, 1,392 rows) — U of Illinois VT. Per-region XLSX
  (openpyxl), corn + soy + WHEAT, 2024+2025. Rich per-site agronomic metadata;
  corn-following-corn vs -soybean kept distinct.
- iowa_icpt_trials (24 docs, 674 rows) — Iowa State ICPT. ASP.NET GridView
  (viewstate postback for year/district), corn + soy by district x season.
- ohio_ocpt_trials (69 docs, 4,647 rows) — OSU/CFAES OCPT. Report PDF
  (pdfplumber; per-site column groups split by header Yield-token count +
  x-coord footnote bucketing), corn + soy per site, 2024+2025.

91 distinct seed brands across the three; majors confirmed present in the
independent rankings: DEKALB 395, Golden Harvest 249, Channel 241, NK 212,
Xitavo 135, LG 103, Pioneer 88, Asgrow 59. (A brand only appears where it
ENTERED a given program — e.g. Brevant not in Iowa, DEKALB/Channel not in
Illinois — true negatives, not parse gaps.)

- rag/chunk.py: gated `include_region` on _render_gh_plot_chunk; the 3 university
  sources route through it so the region/district is in the embedded chunk +
  labeled "variety trial (cross-vendor, independent third-party)". Existing plot
  sources (gh/lg/agrigold/proharvest) unchanged.
- requirements.txt: openpyxl (Illinois XLSX; scrape-time only).
- sources.json + README/CLAUDE/lessons: registered + attributed; lessons
  trial-data + Pioneer entries updated (Pioneer/DEKALB performance now available
  indirectly via these trials).

Validation: all 123 chunk via rag.chunk.chunks_from_trial (0 errors), 0
out-of-range yields, 0 dup keys. Public land-grant data; attribution recorded in
each tos_note. CI rebuilds the index from the committed corpus.
2026-06-10 08:35:50 -04:00

2.3 KiB

Corn yield trial — Upper Sandusky, OH (NW, 2025)

  • Publisher: Ohio Crop Performance Test (independent third-party, all brands)
  • Vendor: The Ohio State University (CFAES extension)
  • Crop: Corn
  • Year: 2025
  • Region: NW
  • Site: Upper Sandusky
  • Source table: TABLE 6. Three year hybrid performance in NORTHWESTERN Ohio, 2023-2025 continued on next page.
  • Source PDF: https://ohiocroptest.cfaes.osu.edu/corntrials/CountryJournal2025.pdf
  • Note: © OSU on the report; explicit no-endorsement clause; public CFAES extension publication; attribute Ohio Corn/Soybean Performance Test, OSU CFAES.

Results (by yield rank)

Rank Brand Hybrid/Variety Traits Yield Harv. Moisture Stalk Lodging Final Stand Emergence
1 DEKALB DKC66-06RIB RR,CB,TRE,WBC 286.3 22.9 1 339 96
2 EBBERTS 1335C NON-GMO 285.3 18.1 0 340 97
3 EBBERTS 9779SSX RR,CB,RW,LL,CEW 283.5 19.9 0 375 98
4 SEED GENETICS DIRECT AGI-C-4111 PWE RR,CB,LL,Enlist 281.3 20.4 0 361 97
5 FS INVISION FS 6133VDG RIB RR,CB,DT 280.9 21.8 0 359 98
6 EBBERTS 7993PC RR,CB,LL,Enlist 278.7 22.9 0 337 97
7 NK NK1188-AA GT,CB,LL 278.2 21.7 0 358 98
8 AXIS SEED 57K72 - 278.1 18.3 2 354 96
9 EBBERTS 6883DGVT2P RIB - 278 21.2 0 360 96
10 EBBERTS 7209TR RR,CB,TRE,WBC 276.3 19.7 0 335 96
11 DEKALB DKC56-26RIB RR,CB,TRE,WBC 275 18.8 0 343 97
12 CHANNEL 211-11VT2PRIB - 274.6 19.9 1 351 97
13 GOLDEN HARVEST G11V76-AA GT,CB,LL 274.6 21.9 0 360 97
14 DEKALB DKC64-22RIB RR,CB 273.5 19.7 1 350 97
15 AXIS SEED 59D20 - 272.8 19.7 1 356 98
16 BA GENETICS BA 25-12 VT2P - 272.2 20.6 0 333 93
17 EBBERTS 7188PC RR,CB,LL,Enlist 271.8 20.6 0 348 97
18 DEKALB DKC68-35RIB RR,CB 270.3 22.2 0 330 95
19 VIKING / BLUE RIVER 85-09 NON-GMO 265.3 20.2 0 331 97
20 SEED GENETICS DIRECT Direct 2111-AA - 265 21.8 0 354 95
21 DEKALB DKC101-35RIB - 263.8 18.1 0 338 96
22 EBBERTS 1660C - 262.7 20.7 0 345 98