Files
seed-mcp/corpus/iowa_icpt_trials/icpt-corn-2024-south-early.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

4.4 KiB

Corn yield trial — Iowa South District (Early Season), 2024

  • Source: Iowa Crop Performance Tests (independent third-party trial)
  • Publisher: Iowa State University / Iowa Crop Improvement Association
  • Crop: Corn
  • State: IA
  • District: South
  • Maturity season: Early Season
  • Year: 2024
  • Experiment mean yield: 216 bu/a
  • Cooperator sites: Atlantic, Corning, Milo, Batavia, Crawfordsville
  • URL: https://www.croptesting.iastate.edu/corn/CornDistrict2.aspx

Results (by yield, all brands)

Rank Company Entry Traits RM Yield Yldp Moist Wyld Eyld Atlantic Corning Milo Batavia Crawfordsville
1 NuTech/G2 Genetics 70F6V LL,RR2 VE 110 230.2 106.5 14.3 233.5 228.9 268.3 196.1 236.1 262.8 187.9
2 Viking/Blue River 76-11 - 111 229.2 106 14.6 226.2 239 237 195.5 246.1 267.5 203.3
3 NuTech/G2 Genetics 69C7PCE LL,RR2 PCE 109 227.8 105.4 15.9 226.1 233.1 256.8 186.2 235.5 271 192.7
4 Renk RK825VT4P RR2 VT4P 112 226.2 104.6 16.2 231.6 229 240.7 209.1 245 248.6 193.6
5 NuTech/G2 Genetics 69B5V LL,RR2 VE 109 225.7 104.4 15 225.9 218.3 261 209.5 207.3 251 196.5
6 NuTech/G2 Genetics 71A2V LL,RR2 VE 111 225.2 104.1 15.6 224.5 213.9 270.3 207.4 195.9 250.3 195.7
7 NuTech/G2 Genetics 71A7V LL,RR2 VE 111 222.8 103.1 15.7 223.3 228 249.5 180.1 240.4 258.4 185.2
8 Latham LH 6009 SS RR2 SS 110 222.7 103 15.1 232.5 215.9 252.3 215.8 229.4 238.2 180.3
9 NuTech/G2 Genetics 72C1PCE LL,RR2 PCE 112 221.4 102.4 15.8 222.3 223.5 241.5 194.7 230.7 252.1 187.8
10 Renk RK832SSPRO LL,RR2 SSP-RIB 112 221.1 102.3 15.8 221.9 219.3 250.7 198.4 216.7 256.1 185.1
11 Cornelius Seed C7235PC LL,RR2 PC 112 221 102.2 15 227.1 220.4 232.3 212.9 236.2 243 182
12 Cornelius Seed C7216VT4P RR2 VT4P 112 220.5 102 15.9 222.6 227.5 218 204.6 245.1 249.4 188.1
13 Cornelius Seed C7026PCE GT,LL PC 110 220.4 101.9 15.5 220.6 225.3 236.5 189.9 235.3 252.9 187.7
14 Renk RK800VT4P RR2 VT4P 110 219.5 101.5 14.8 214.2 214.5 239.7 208.6 194.4 257.5 191.6
15 NuTech/G2 Genetics 70B4AM LL,RR2 AM 110 219.3 101.4 14.8 216.6 226.8 226.1 190.4 233.2 251.7 195.6
16 Pioneer P1185Q LL,RR2 Qrome 111 218.9 101.3 16.3 220.3 211.1 252.1 203.9 204.9 237.6 191
17 Latham LH 5906 PCE LL,RR2 PC-RIB 109 218.7 101.1 14.3 207.9 230.4 198.9 195.3 229.6 273.4 188.1
18 Cornelius Seed C7202SSP LL,RR2 SSP 112 218 100.8 16.5 225.8 214.4 249 194.6 233.9 248.9 160.3
19 NuTech/G2 Genetics 73A6AML LL,RR2 AML 113 217.8 100.7 16.5 219.7 213 242.1 207.4 209.7 250.3 179.1
20 Dyna-Gro D51VC95RIB LL,RR2 VT2P-RIB 111 210 97.1 14.6 206.2 216.3 195.2 204.2 219.3 243.4 186.1
21 Pioneer P1093Q LL,RR2 Qrome 110 209.3 96.8 16.1 212.6 201.1 245.3 197.9 194.7 231.9 176.7
22 Renk RK895DGVT2P LL,RR2 DGVT2P 112 209.3 96.8 16.1 203.7 214.8 220 182.1 208.9 247.1 188.3
23 Dekalb DKC112-29SSPRIB LL,RR2 SSP-RIB 112 208.4 96.4 15.8 208.6 215.5 214.6 185.2 225.9 260.1 160.5
24 Latham LH 6155 VT2 PRO RIB RR2 VT2P-RIB 111 200.1 92.5 15.3 199.1 206.3 195 186.5 215.7 231.9 171.3
25 Latham LH 5815 VT2 PRO RR2 VT2P-RIB 108 199.9 92.4 14.6 196.9 206.5 221.1 162 207.5 243.7 168.5
26 Dyna-Gro D49PN05RA LL,RR2 PC-RIB 109 199.2 92.1 14.7 190.4 217.5 195.6 154.2 221.5 243.7 187.5
27 Epley Brothers Hybrids E1920 - 109 197.7 91.4 16.1 196.2 197.4 207.6 190.2 190.6 238.7 162.9
28 NK Seeds NK1056-V GT,LL VIP 110 194 89.7 15.4 188 196.4 208.6 174.4 181 232.3 175.8

Top 5 by Yield: 70F6V (NuTech/G2 Genetics) 230.2, 76-11 (Viking/Blue River) 229.2, 69C7PCE (NuTech/G2 Genetics) 227.8, RK825VT4P (Renk) 226.2, 69B5V (NuTech/G2 Genetics) 225.7.