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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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Soybean yield trial — University of Illinois VT, Region 1, IL 2025

Publisher: University of Illinois Variety Testing (independent cross-vendor trial)
Crop: Soybean
State: IL
Year: 2025
Region: Region 1
Rotation: corn following soybean
Cooperator / host: John and Jim Boesche
County: DeKalb
Sites: DeKalb
Soil type: Catlin silt loam
Tillage: Field cultivator
Planted: 2025-05-12
Harvested: 2025-10-28
Source XLSX: https://vt.cropsci.illinois.edu/wp-content/uploads/2025/11/2025-Region-1.xlsx
Index page: https://vt.cropsci.illinois.edu/soybeans/

Results (ranked by regional yield)

Rank	Brand	Product	Traits	Yield	Lodging	Height	Protein	Oil
1	Viking	Blue River	32B6	HT:CV	95.69	3.33	44.67	35.17
2	Xitavo	XO 2926E	HT:EN ST:Be	94.6	3.67	40.67	34.27	19.93
3	Xitavo	XO 2366E	HT:EN ST:Be	94.36	2.67	38	34.1	20.53
4	DeRaedt	2526 E-3	HT:EN ST:B	94.22	3.33	39.33	34.07	19.7
5	Lakeview Farms	LVF2872	HT:CV ST:B	92.74	4.33	42	34.43	19.57
6	Viking	Blue River	27B4	HT:CV	92.56	4	44	34.57
7	Xitavo	XO 2556E	HT:EN ST:Be	91.07	1.67	38.67	34.5	19.6
8	DONMARIO	DM24E84	HT:EN ST:BS	90.5	1.67	40	35.67	19.23
9	Burrus	2916E	HT:EN ST:BS	90.42	4	40.67	33.73	20.23
10	Viking	Blue River	30B6	HT:CV	89.57	3.33	35.33	33.57
11	DeRaedt	2525 E-3	HT:EN ST:B	89.52	4.33	41.33	34.77	20.13
12	DeRaedt	2624 E-3	HT:EN ST:B	89.49	2	37.33	33.77	20.5
13	Xitavo	XO 3014E	HT:EN ST:Be	87.34	1.67	40	33.77	20.1
14	Viking	Blue River	30B4	HT:CV	87.15	2	44.67	35.17
15	Lakeview Farms	LVF1973	HT:CV ST:B	86.76	7	40.67	34.17	20.37
16	Cornelius	CB25C10	HT:CV ST:BS	85.98	2.67	40	35.03	19.63
17	Lakeview Farms	LVF3073	HT:CV ST:B	85.07	3.33	47.33	34.7	19.17
18	Northern Star	2788Np	HT:CV ST:B	84.66	4.33	42	34.87	19.87
19	Confluence Genetics	BH23H228	HT:CV ST:BS	84.63	4	42.67	36.93	18.57
20	Lakeview Farms	LVF2545	HT:CV ST:B	84.03	6.67	42	34.13	20.23
21	Cornelius	CB27C10	HT:CV ST:BS	83.87	4	45.33	35.3	19.3
22	Viking	Blue River	3418N	HT:CV	83.52	1.67	44	34.9
23	Xitavo	XO 2865E	HT:EN ST:Be	83.47	5.67	40	34.77	19.23
24	Lakeview Farms	LVF2849	HT:CV ST:B	81.91	5	37.33	33.73	21.03
25	Baird Seed	Illini 2812Na	HT:CV ST:B	80.1	4	40	35.6	19.43
26	Lakeview Farms	LVF2632	HT:CV ST:B	78.89	2.33	41.33	35.2	19.7
27	Baird Seed	Illini 1958N	HT:CV ST:B	77.24	5.33	42	34.3	20.77
28	Confluence Genetics	BH31Q146	HT:STS ST:BS	75.11	0.67	42	39.7	17.47

3.0 KiB Raw Blame History

Soybean yield trial — University of Illinois VT, Region 1, IL 2025

Results (ranked by regional yield)

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Raw Blame History