Add university-extension trials: Illinois VT + Iowa ICPT + Ohio OCPT (+123 cross-vendor trial docs) (#19)

Co-authored-by: claude <claude@jpaul.io> Co-committed-by: claude <claude@jpaul.io>
2026-06-10 08:36:19 -04:00
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+# Corn yield trial — University of Illinois VT, Region 1, IL 2025
+
+- **Publisher:** University of Illinois Variety Testing (independent cross-vendor trial)
+- **Crop:** Corn
+- **State:** IL
+- **Year:** 2025
+- **Region:** Region 1
+- **Rotation:** corn following soybean
+- **Cooperator / host:** Highland C.C.
+- **County:** Stephenson
+- **Sites:** Freeport, DeKalb
+- **Soil type:** Fayette silt loam
+- **Tillage:** Field cultivator
+- **Planted:** 2025-05-12
+- **Harvested:** 2025-10-21
+- **Source XLSX:** https://vt.cropsci.illinois.edu/wp-content/uploads/2025/11/Region-1-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 | Cornelius | C7164 | IST:L | 272.78 | 16.72 | 1.67 | 111 |
+| 2 | Prairie | 6436 | - | 272.35 | 16.82 | 1.17 | 111 |
+| 3 | Prairie | 4556 | - | 270.9 | 15.7 | 1.17 | 104 |
+| 4 | Prairie | 6251 | - | 270.81 | 15.62 | 0.5 | 111 |
+| 5 | Cornelius | C6618 | IST:L | 270.43 | 15.83 | 0.67 | 106 |
+| 6 | Prairie | 7241 | - | 267.18 | 16.93 | 0.33 | 112 |
+| 7 | Prairie | 3054 | - | 266.64 | 14.85 | 2.67 | 103 |
+| 8 | Cornelius | C7399 | IST:L | 262.83 | 17.25 | 1.83 | 113 |
+| 9 | Prairie | 7445 | - | 262.75 | 17.62 | 1.5 | 113 |
+| 10 | Viking | Blue River | 75-07 | - | 262.73 | 16.12 | 1.5 | 107 |
+| 11 | Cornelius | C6900 | IST:L | 262.33 | 16.57 | 1 | 109 |
+| 12 | Cornelius | C6523 | IST:L | 262.31 | 14.72 | 3 | 105 |
+| 13 | Cornelius | C7026 | IST:L | 261.85 | 16.45 | 1.67 | 110 |
+| 14 | Prairie | 2235 | - | 259.68 | 15 | 2.17 | 105 |
+| 15 | Prairie | 7265 | - | 256.96 | 16.33 | 2.33 | 112 |
+| 16 | Prairie | 6854 | - | 256.2 | 14.77 | 0.17 | 110 |
+| 17 | Viking | Blue River | 76-11 | - | 253.92 | 14.95 | 0.83 | 111 |
+| 18 | Cornelius | C7235 | IST:L | 252.81 | 19.2 | 1.17 | 112 |
+| 19 | Prairie | 2311 | - | 246.88 | 15.08 | 1.83 | 106 |
+| 20 | Prairie | 8786 | - | 246.44 | 15.18 | 0.33 | 115 |
+| 21 | Viking | Blue River | 49-05 | - | 239.94 | 14.43 | 2.33 | 105 |
+| 22 | Prairie | 6755 | - | 237.31 | 16.23 | 0.83 | 110 |