Files
seed-mcp/corpus/illinois_vt_trials/ilvt-corn-2025-r4.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

1.5 KiB

Corn yield trial — University of Illinois VT, Region 4, IL 2025


Results (ranked by regional yield)

Rank Brand Product Traits Yield Moisture Lodging Maturity
1 Prairie 8786 - 196.65 13.27 0 115
2 Burrus 5C11 PCE GT:C HT:B IST:M 184.2 12.87 0 110
3 Burrus 8K34 VT2P GT:C HT:G IST:M 177.59 14.15 0 116
4 Whisnand WH403TRE GT:C2L HT:G IST:L 166.28 12.47 0 115
5 Prairie 6854 - 157.49 12.25 0 110
6 Whisnand WH304SS GT:CRL HT:B IST:L 157.45 12.78 0.33 112
7 Whisnand WH303VT2P GT:C2L HT:G IST:L 157.26 12.97 0.17 115
8 Whisnand WH402VT2P GT:C2L HT:G IST:L 155.69 12.85 0 114
9 Burrus 7B14 PCE GT:C HT:B IST:M 152.92 13.02 0.33 114
10 Prairie 7445 - 145.71 12.12 0 113
11 Prairie 6436 - 137.95 12.45 0 111