Add ProHarvest Seeds: 119 varieties + 161 cross-vendor plot reports (#16)

Co-authored-by: claude <claude@jpaul.io> Co-committed-by: claude <claude@jpaul.io>
2026-06-04 21:05:30 -04:00
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+# Corn yield trial — Klein Family Transport LLC (Sherrill, IA, 2025)
+
+- **Publisher:** ProHarvest Seeds (cross-vendor plot report)
+- **Crop:** Corn
+- **Year:** 2025
+- **Location:** Sherrill, IA · Dubuque County
+- **Cooperator:** Klein Family Transport LLC
+- **Company rep:** Ryan Frederich
+- **Planted:** 5/8/2025
+- **Harvested:** 10/10/2025
+- **Previous crop:** Soybeans
+- **Row width:** 30
+- **Population:** 35,000 seeds/acre
+- **Tillage:** Conventional
+- **Irrigation:** Non-Irrigated
+- **Source PDF:** https://proharvestseeds.com/wp-content/uploads/2025/10/Corn-Klein-Family-Transport-Sherrill-IA.pdf
+
+---
+
+## Results (head-to-head)
+
+| Rank | Brand | Hybrid/Variety | Trait | Yield/Ac | % H2O | Test Wt | +/- Ave |
+|---|---|---|---|---|---|---|---|
+| 1 | Channel | 205-08 | SSPRO | 227.37 | 15 | 587 | 19.1 |
+| 2 | Channel | 207-34 | SSPRO | 226.98 | 17.3 | 56.6 | 18.7 |
+| 3 | ProHarvest | 74P10 | PCE | 212.72 | 15.9 | 57.8 | 4.4 |
+| 4 | ProHarvest | 75P85 | SSRIB | 209.11 | 19.5 | 55.1 | 0.8 |
+| 5 | ProHarvest | 79P54 | SSPRO | 201.07 | 14.9 | 56.7 | -7.2 |
+| 6 | ProHarvest | 77P25 | VT4PRIB | 200.57 | 15.8 | 56.1 | -7.7 |
+| 7 | ProHarvest | 77P25 | VT4PRIB | 198.65 | 17.2 | 55.7 | -9.6 |
+| 8 | Channel | 208-25 | SSPRO | 189.76 | 17 | 58.3 | -18.5 |