54094a0d43
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.
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Corn yield trial — University of Illinois VT, Region 4, IL 2025
- Publisher: University of Illinois Variety Testing (independent cross-vendor trial)
- Crop: Corn
- State: IL
- Year: 2025
- Region: Region 4
- Rotation: corn following soybean
- Cooperator / host: Emmerick Farms
- County: Fayette
- Sites: St Peter, Belleville
- Soil type: Wynoose silt loam
- Tillage: Vertical Till
- Planted: 2025-06-02
- Harvested: 2024-10-24
- Source XLSX: https://vt.cropsci.illinois.edu/wp-content/uploads/2025/11/Region-4-Corn-Table-2025.xlsx
- Index page: https://vt.cropsci.illinois.edu/corn/
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 |