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 — Vonderfecht Brothers (Gladstone, NE, 2024)
+
+- **Publisher:** ProHarvest Seeds (cross-vendor plot report)
+- **Crop:** Corn
+- **Year:** 2024
+- **Location:** Gladstone, NE · Jefferson County
+- **Cooperator:** Vonderfecht Brothers
+- **Company rep:** Trent Geistlinger
+- **Planted:** 5/23/2024
+- **Harvested:** 10/29/2024
+- **Previous crop:** Corn
+- **Row width:** 30
+- **Population:** 24,500 seeds/acre
+- **Tillage:** No-Till
+- **Irrigation:** Non-Irrigated
+- **Source PDF:** https://proharvestseeds.com/wp-content/uploads/2024/11/Corn-Vonderfecht-Brothers-Gladstone-NE-68352.pdf
+
+---
+
+## Results (head-to-head)
+
+| Rank | Brand | Hybrid/Variety | Trait | Yield/Ac | % H2O | Test Wt | +/- Ave |
+|---|---|---|---|---|---|---|---|
+| 1 | ProHarvest | 83P48 | SSPRO | 152.21 | 11.8 | 61.3 | 19.5 |
+| 2 | ProHarvest | 83P66VT2PRORIB | - | 139.92 | 11.9 | 59 | 7.2 |
+| 3 | ProHarvest | 85P58 | SSRIB | 137.84 | 12.1 | 61.5 | 5.1 |
+| 4 | ProHarvest | 83P33 | DGVT2PRIB | 137.69 | 12.2 | 59.3 | 5 |
+| 5 | ProHarvest | 81P65 | V | 136.89 | 11.9 | 59.3 | 4.2 |
+| 6 | ProHarvest | 82P79 | VT2PRIB | 136.76 | 11.5 | 59.7 | 4 |
+| 7 | ProHarvest | 83P17 | PCE | 136.26 | 11.9 | 59.9 | 3.5 |
+| 8 | ProHarvest | 78P23 | PCE | 135.07 | 12.1 | 60.5 | 2.3 |
+| 9 | ProHarvest | 81P20 | PCE | 127.54 | 11.3 | 59.9 | -5.2 |
+| 10 | ProHarvest | 84P78 | TRERIB | 127 | 11.5 | 59.3 | -5.7 |
+| 11 | ProHarvest | 80P75 | PCE | 126.46 | 11.7 | 58.1 | -6.3 |
+| 12 | ProHarvest | 84P30 | AA | 99.22 | 12.3 | 60.1 | -33.5 |