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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+# Soybean yield trial — Joliet Junior College Soybeans (Joliet, IL, 2025)
+
+- **Publisher:** ProHarvest Seeds (cross-vendor plot report)
+- **Crop:** Soybean
+- **Year:** 2025
+- **Location:** Joliet, IL · Will County
+- **Source PDF:** https://proharvestseeds.com/wp-content/uploads/2025/10/Soy-JJC-Joliet-IL.pdf
+
+---
+
+## Trial data (verbatim from PDF)
+
+```
+2025 Soybean Variety Plot
+J.F. Richards Land Laboratory
+Cooperator Joliet Junior College Planting Date 14-May
+Address 1215 Houbolt Road; Joliet, IL 60431 Harvest Date 2-Oct
+Coodinates 41.49841° N, 88.16956° W
+County Will
+Crop Soybeans; 30" rows
+Planting Rate 145,000
+Previous Crop Corn
+Tillage System spring disk/spring cultivate
+Plot width 20'
+Plot length 270'
+Formula: Bu/A = A ÷ B ÷ C Herbicide Enlist One + Liberty
+A = [(100 - measured % moisture) * 0.01 ] x harvest weight Additional N / Fungicide n/a
+B = [(1-0.130) x 60 lb/bu] C = [(plot width) x (plot length)/43,560ft²/A]
+Harvest Harvest Bu/Acre @
+Entry Brand Variety Traits RM Rank
+Weight Moisture % 13% moisture
+check₁ Channel CT2725 Enlist 3 2.7 313 8.4 44.3 2
+2 DonMario 2729E Enlist 3 2.7 309 8.4 43.8 3
+3 ProHarvest AE2860 Enlist 3 2.8 330 8.3 46.7 1
+check₂ Channel CT2725 Enlist 3 2.7 309 8.2 43.8 3
+5 Mershman 2526E Osage Enlist 3 2.6 283 8.4 40.2 4
+6 Alloy A29E35 Enlist 3 2.9 258 8.5 36.5 7
+7 Golden Harvest GH2674E3 Enlist 3 2.6 258 8.3 36.6 6
+checkᵌ Channel CT2725 Enlist 3 2.7 263 9.0 37.0 5
+PLOT AVERAGE: 41.1
+```