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

171 lines
3.7 KiB
JSON

{
"source": "illinois_vt_trials",
"source_key": "ilvt-corn-2025-r4",
"data_type": "trial",
"vendor": "University of Illinois",
"brand_aggregator": "University of Illinois Variety Testing publishes",
"brand": "University of Illinois VT",
"crop": "corn",
"state": "IL",
"state_abbrev": "il",
"year": 2025,
"region": "Region 4",
"rotation": "corn following soybean",
"previous_crop": null,
"cooperator": "Emmerick Farms",
"county": "Fayette",
"sites": [
"St Peter",
"Belleville"
],
"soil_type": "Wynoose silt loam",
"tillage": "Vertical Till",
"planted_date": "2025-06-02",
"harvested_date": "2024-10-24",
"row_width": null,
"latitude": 38.850667,
"longitude": -89.192119,
"results": [
{
"rank": 1,
"brand": "Prairie",
"product": "8786",
"traits": null,
"metrics": {
"Yield": 196.65,
"Moisture": 13.27,
"Lodging": 0,
"Maturity": 115
}
},
{
"rank": 2,
"brand": "Burrus",
"product": "5C11 PCE",
"traits": "GT:C HT:B IST:M",
"metrics": {
"Yield": 184.2,
"Moisture": 12.87,
"Lodging": 0,
"Maturity": 110
}
},
{
"rank": 3,
"brand": "Burrus",
"product": "8K34 VT2P",
"traits": "GT:C HT:G IST:M",
"metrics": {
"Yield": 177.59,
"Moisture": 14.15,
"Lodging": 0,
"Maturity": 116
}
},
{
"rank": 4,
"brand": "Whisnand",
"product": "WH403TRE",
"traits": "GT:C2L HT:G IST:L",
"metrics": {
"Yield": 166.28,
"Moisture": 12.47,
"Lodging": 0,
"Maturity": 115
}
},
{
"rank": 5,
"brand": "Prairie",
"product": "6854",
"traits": null,
"metrics": {
"Yield": 157.49,
"Moisture": 12.25,
"Lodging": 0,
"Maturity": 110
}
},
{
"rank": 6,
"brand": "Whisnand",
"product": "WH304SS",
"traits": "GT:CRL HT:B IST:L",
"metrics": {
"Yield": 157.45,
"Moisture": 12.78,
"Lodging": 0.33,
"Maturity": 112
}
},
{
"rank": 7,
"brand": "Whisnand",
"product": "WH303VT2P",
"traits": "GT:C2L HT:G IST:L",
"metrics": {
"Yield": 157.26,
"Moisture": 12.97,
"Lodging": 0.17,
"Maturity": 115
}
},
{
"rank": 8,
"brand": "Whisnand",
"product": "WH402VT2P",
"traits": "GT:C2L HT:G IST:L",
"metrics": {
"Yield": 155.69,
"Moisture": 12.85,
"Lodging": 0,
"Maturity": 114
}
},
{
"rank": 9,
"brand": "Burrus",
"product": "7B14 PCE",
"traits": "GT:C HT:B IST:M",
"metrics": {
"Yield": 152.92,
"Moisture": 13.02,
"Lodging": 0.33,
"Maturity": 114
}
},
{
"rank": 10,
"brand": "Prairie",
"product": "7445",
"traits": null,
"metrics": {
"Yield": 145.71,
"Moisture": 12.12,
"Lodging": 0,
"Maturity": 113
}
},
{
"rank": 11,
"brand": "Prairie",
"product": "6436",
"traits": null,
"metrics": {
"Yield": 137.95,
"Moisture": 12.45,
"Lodging": 0,
"Maturity": 111
}
}
],
"n_results": 11,
"source_urls": [
"https://vt.cropsci.illinois.edu/wp-content/uploads/2025/11/Region-4-Corn-Table-2025.xlsx",
"https://vt.cropsci.illinois.edu/corn/"
],
"tos_note": "No usage terms posted on UIUC VT site; publicly-funded land-grant data; attribute University of Illinois Variety Testing.",
"fetched_at": "2026-06-10T12:14:51.728652+00:00",
"scraper_version": "0.1.0"
}