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 — Blair Hoerbert (San Jose, IL, 2025)
+
+- **Publisher:** ProHarvest Seeds (cross-vendor plot report)
+- **Crop:** Corn
+- **Year:** 2025
+- **Location:** San Jose, IL · Logan County
+- **Cooperator:** Blair Hoerbert
+- **Company rep:** Tom Forrest
+- **Planted:** 5/7/2025
+- **Harvested:** 9/26/2025
+- **Previous crop:** Corn
+- **Row width:** 30
+- **Population:** 36,000 seeds/acre
+- **Tillage:** Conventional
+- **Irrigation:** Non-Irrigated
+- **Fungicide:** Yes
+- **Source PDF:** https://proharvestseeds.com/wp-content/uploads/2025/10/Corn-Hoerbert-San-Joes-IL-corn-on-corn-min.pdf
+
+---
+
+## Results (head-to-head)
+
+| Rank | Brand | Hybrid/Variety | Trait | Yield/Ac | % H2O | Test Wt | +/- Ave |
+|---|---|---|---|---|---|---|---|
+| 1 | ProHarvest | 81P19 | VT4P RIB | 267.97 | 24.2 | 54.1 | 33.9 |
+| 2 | ProHarvest | 85P58 | SSRIB | 248.55 | 20.2 | 58.1 | 14.5 |
+| 3 | ProHarvest | 83P48 | SSPRO | 244.4 | 21.7 | 55.2 | 10.4 |
+| 4 | ProHarvest | 79P54 | SSPRO | 239.91 | 19.3 | 56.2 | 5.9 |
+| 5 | ProHarvest | 82P96 | PCE | 226.71 | 20.2 | 55.1 | -7.3 |
+| 6 | ProHarvest | 79P15 | V | 226.52 | 21 | 54.6 | -7.5 |
+| 7 | ProHarvest | 77P25 | TRERIB | 217.12 | 20.1 | 53 | -16.9 |
+| 8 | ProHarvest | 79P87 | SSRIB | 201.03 | 15.8 | 58.7 | -33 |