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seed-mcp/corpus/iowa_icpt_trials/icpt-soybeans-2025-central-early.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

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{
"source": "iowa_icpt_trials",
"source_key": "icpt-soybeans-2025-central-early",
"data_type": "trial",
"vendor": "Iowa State University",
"brand_aggregator": "Iowa Crop Performance Tests publishes",
"brand": "Iowa Crop Performance Tests",
"crop": "soybeans",
"state": "IA",
"state_abbrev": "ia",
"year": 2025,
"region": "District Central",
"district": "Central",
"season": "Early Season",
"cooperator_sites": [
"Missouri Valley",
"Glidden",
"Nevada",
"Keystone",
"Clarence"
],
"experiment_mean_yield": 69.9,
"results": [
{
"rank": 1,
"brand": "Dyna-Gro",
"product": "S27XF26",
"traits": "RR2XF",
"metrics": {
"MG": 2.7,
"Yield": 74.2,
"WestYield": 75.2,
"EastYield": 72.7,
"Missouri Valley": 78.6,
"Glidden": 73.9,
"Nevada": 73.2,
"Keystone": 71.6,
"Clarence": 73.3
}
},
{
"rank": 2,
"brand": "Golden Harvest",
"product": "GH2315E3",
"traits": "E3",
"metrics": {
"MG": 2.3,
"Yield": 73.1,
"WestYield": 74.2,
"EastYield": 71.5,
"Missouri Valley": 77.6,
"Glidden": 72.9,
"Nevada": 72.1,
"Keystone": 70.2,
"Clarence": 72.4
}
},
{
"rank": 3,
"brand": "Viking/Blue River",
"product": "27B4",
"traits": "Conv",
"metrics": {
"MG": 2.7,
"Yield": 72.3,
"WestYield": 74,
"EastYield": 68,
"Missouri Valley": 85.6,
"Glidden": 72.3,
"Nevada": 64,
"Keystone": 64.6,
"Clarence": 75.3
}
},
{
"rank": 4,
"brand": "Renk",
"product": "G2300E",
"traits": "E3",
"metrics": {
"MG": 2.3,
"Yield": 72.2,
"WestYield": 71.7,
"EastYield": 70.4,
"Missouri Valley": 77.8,
"Glidden": 71.8,
"Nevada": 65.4,
"Keystone": 70.5,
"Clarence": 75.1
}
},
{
"rank": 5,
"brand": "Renk",
"product": "G2480E",
"traits": "E3",
"metrics": {
"MG": 2.4,
"Yield": 72.1,
"WestYield": 72,
"EastYield": 69,
"Missouri Valley": 80.3,
"Glidden": 72,
"Nevada": 63.8,
"Keystone": 68.6,
"Clarence": 74.5
}
},
{
"rank": 6,
"brand": "Golden Harvest",
"product": "GH2674E3",
"traits": "E3",
"metrics": {
"MG": 2.6,
"Yield": 72,
"WestYield": 71.7,
"EastYield": 70.9,
"Missouri Valley": 76.9,
"Glidden": 70.9,
"Nevada": 67.3,
"Keystone": 68.6,
"Clarence": 77
}
},
{
"rank": 7,
"brand": "Renk",
"product": "G2790E",
"traits": "E3",
"metrics": {
"MG": 2.7,
"Yield": 72,
"WestYield": 73.4,
"EastYield": 68.4,
"Missouri Valley": 79.6,
"Glidden": 74.1,
"Nevada": 66.5,
"Keystone": 67.9,
"Clarence": 70.9
}
},
{
"rank": 8,
"brand": "NK Seeds",
"product": "NK26-M6E3",
"traits": "E3",
"metrics": {
"MG": 2.6,
"Yield": 71.7,
"WestYield": 72.8,
"EastYield": 70.6,
"Missouri Valley": 75.2,
"Glidden": 71.9,
"Nevada": 71.5,
"Keystone": 69.5,
"Clarence": 70.9
}
},
{
"rank": 9,
"brand": "Dyna-Gro",
"product": "S25EN74",
"traits": "E3",
"metrics": {
"MG": 2.5,
"Yield": 71.6,
"WestYield": 72.7,
"EastYield": 68.9,
"Missouri Valley": 77.7,
"Glidden": 71.9,
"Nevada": 68.6,
"Keystone": 66.7,
"Clarence": 71.5
}
},
{
"rank": 10,
"brand": "P3 Genetics",
"product": "2527E",
"traits": "E3",
"metrics": {
"MG": 2.7,
"Yield": 71.3,
"WestYield": 71,
"EastYield": 70,
"Missouri Valley": 76.8,
"Glidden": 69.5,
"Nevada": 66.7,
"Keystone": 73.5,
"Clarence": 69.9
}
},
{
"rank": 11,
"brand": "Renk",
"product": "RS255NXF",
"traits": "RR2XF",
"metrics": {
"MG": 2.5,
"Yield": 71.2,
"WestYield": 73,
"EastYield": 69.9,
"Missouri Valley": 76.9,
"Glidden": 69.2,
"Nevada": 72.9,
"Keystone": 63.2,
"Clarence": 73.6
}
},
{
"rank": 12,
"brand": "Renk",
"product": "RS266E",
"traits": "E3",
"metrics": {
"MG": 2.6,
"Yield": 71,
"WestYield": 74.7,
"EastYield": 66.9,
"Missouri Valley": 80.9,
"Glidden": 73.3,
"Nevada": 70,
"Keystone": 59.9,
"Clarence": 70.7
}
},
{
"rank": 13,
"brand": "P3 Genetics",
"product": "2424E",
"traits": "E3",
"metrics": {
"MG": 2.4,
"Yield": 71,
"WestYield": 71.5,
"EastYield": 69.6,
"Missouri Valley": 80.2,
"Glidden": 66.6,
"Nevada": 67.8,
"Keystone": 64.4,
"Clarence": 76.5
}
},
{
"rank": 14,
"brand": "Xitavo",
"product": "XO 2556E",
"traits": "E3",
"metrics": {
"MG": 2.5,
"Yield": 71,
"WestYield": 72.5,
"EastYield": 69.8,
"Missouri Valley": 75.4,
"Glidden": 71.1,
"Nevada": 71,
"Keystone": 69.5,
"Clarence": 68.8
}
},
{
"rank": 15,
"brand": "Asgrow",
"product": "AG25XF5",
"traits": "RR2XF",
"metrics": {
"MG": 2.5,
"Yield": 71,
"WestYield": 71.2,
"EastYield": 69,
"Missouri Valley": 78.8,
"Glidden": 69.2,
"Nevada": 65.5,
"Keystone": 67.5,
"Clarence": 74.1
}
},
{
"rank": 16,
"brand": "P3 Genetics",
"product": "2626E",
"traits": "E3",
"metrics": {
"MG": 2.6,
"Yield": 70.5,
"WestYield": 71.4,
"EastYield": 68.2,
"Missouri Valley": 81.2,
"Glidden": 65.9,
"Nevada": 67.1,
"Keystone": 67.2,
"Clarence": 70.3
}
},
{
"rank": 17,
"brand": "Nutech/G2 Genetics",
"product": "25N05E",
"traits": "E3",
"metrics": {
"MG": 2.5,
"Yield": 70.5,
"WestYield": 72.6,
"EastYield": 67.1,
"Missouri Valley": 82.6,
"Glidden": 69.5,
"Nevada": 65.8,
"Keystone": 59.9,
"Clarence": 75.7
}
},
{
"rank": 18,
"brand": "Pioneer",
"product": "P25A16E",
"traits": "E3",
"metrics": {
"MG": 2.5,
"Yield": 70.4,
"WestYield": 70.5,
"EastYield": 68.8,
"Missouri Valley": 76.9,
"Glidden": 69.3,
"Nevada": 65.3,
"Keystone": 65.5,
"Clarence": 75.5
}
},
{
"rank": 19,
"brand": "Xitavo",
"product": "XO 2735E",
"traits": "E3",
"metrics": {
"MG": 2.7,
"Yield": 69.7,
"WestYield": 69.2,
"EastYield": 67.2,
"Missouri Valley": 75.5,
"Glidden": 70.3,
"Nevada": 61.8,
"Keystone": 68.2,
"Clarence": 71.8
}
},
{
"rank": 20,
"brand": "Pioneer",
"product": "P23A40E",
"traits": "E3",
"metrics": {
"MG": 2.3,
"Yield": 68.8,
"WestYield": 69.8,
"EastYield": 68.2,
"Missouri Valley": 73,
"Glidden": 67.8,
"Nevada": 68.8,
"Keystone": 61.2,
"Clarence": 74.6
}
},
{
"rank": 21,
"brand": "ISU",
"product": "IAS25C2",
"traits": "Conv",
"metrics": {
"MG": 2.5,
"Yield": 68.3,
"WestYield": 70,
"EastYield": 66.7,
"Missouri Valley": 73.8,
"Glidden": 68,
"Nevada": 68.2,
"Keystone": 61.7,
"Clarence": 70.3
}
},
{
"rank": 22,
"brand": "Xitavo",
"product": "XO 2366E",
"traits": "E3",
"metrics": {
"MG": 2.3,
"Yield": 67.7,
"WestYield": 69.4,
"EastYield": 64.4,
"Missouri Valley": 77.6,
"Glidden": 69,
"Nevada": 61.5,
"Keystone": 61.7,
"Clarence": 69.9
}
},
{
"rank": 23,
"brand": "Asgrow",
"product": "AG27XF4",
"traits": "RR2XF",
"metrics": {
"MG": 2.7,
"Yield": 67.2,
"WestYield": 65.3,
"EastYield": 67.9,
"Missouri Valley": 71,
"Glidden": 61.5,
"Nevada": 63.4,
"Keystone": 63.8,
"Clarence": 76.5
}
},
{
"rank": 24,
"brand": "ISU",
"product": "IAS27C3",
"traits": "Conv",
"metrics": {
"MG": 2.7,
"Yield": 65.9,
"WestYield": 65.5,
"EastYield": 63.7,
"Missouri Valley": 73.2,
"Glidden": 65.6,
"Nevada": 57.8,
"Keystone": 60.4,
"Clarence": 72.8
}
},
{
"rank": 25,
"brand": "Confluence Genetics",
"product": "BX27Q266",
"traits": "Conv",
"metrics": {
"MG": 2.7,
"Yield": 64.3,
"WestYield": 64.1,
"EastYield": 64.5,
"Missouri Valley": 67.3,
"Glidden": 62.6,
"Nevada": 62.5,
"Keystone": 59.3,
"Clarence": 71.8
}
},
{
"rank": 26,
"brand": "Cornelius",
"product": "CB24XF75",
"traits": "RR2XF",
"metrics": {
"MG": 2.4,
"Yield": 64.2,
"WestYield": 63.2,
"EastYield": 65,
"Missouri Valley": 60.9,
"Glidden": 65.3,
"Nevada": 63.5,
"Keystone": 58.8,
"Clarence": 72.7
}
},
{
"rank": 27,
"brand": "Confluence Genetics",
"product": "N2358",
"traits": "Conv",
"metrics": {
"MG": 2.3,
"Yield": 61.2,
"WestYield": 58.4,
"EastYield": 62.3,
"Missouri Valley": 61.2,
"Glidden": 56.8,
"Nevada": 57.1,
"Keystone": 56.6,
"Clarence": 73.3
}
}
],
"n_results": 27,
"source_urls": [
"https://www.croptesting.iastate.edu/Soybean/SoybeanDistrict2.aspx"
],
"tos_note": "Footer 'Copyright (c) ...ISU...All rights reserved' (no automation clause, no robots.txt); public ICPT data; low request rate; attribute Iowa Crop Performance Tests / ISU.",
"fetched_at": "2026-06-10T12:13:17.022833+00:00",
"scraper_version": "0.1.0"
}
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