ToolFusion
📋 Case Study

Soybean Desiccant Application Under Variable Terrain in Saskatchewan

Pressure fluctuations ±32% due to elevation changes causing DV0.9 variability >40% and desiccant burn in low areas

🏗️ Project Overview

1,200-ha rolling terrain operation using rate-variable sprayer with GPS terrain compensation

🎯 Challenge

Pressure fluctuations ±32% due to elevation changes causing DV0.9 variability >40% and desiccant burn in low areas

🔧 Design Approach

Active pressure regulation with dual-sensor feedback (inlet + outlet); nozzle-specific pressure mapping; ISO 16122-compliant uniformity verification per 50-m segment

📐 Design Diagram

Soybean Desiccant Application SystemTerrain Elevation Δh → ±28.4 kPaChallenge: DV₀.₉ variability >40% | Burn in low areasΔP SensorInletRegulatorΔP SensorOutletNozzle±32%ActiveDual-SensorMappingISO 16122 Verification: 50-m segments | DV₀.₉ Stability = 0.92Target DV₀.₉ = 1.2 mm | Actual = 1.104 mm

AI-generated project design illustration

📐 Key Calculations

Terrain-Induced Pressure Deviation

ρ × g × Δh / 100
Result: ±28.4 kPa
Measured Δh = ±29 m

DV0.9 Stability Index

1 − |DV0.9_Actual − DV0.9_Target| / DV0.9_Target
Result: 0.92
Target stability >0.90

📊 Results

DV0.9 variability reduced from 42% to 5.1%; uniform desiccation timing across all elevation bands; 100% yield preservation in low-lying zones

💡 Lessons Learned

  • •Outlet pressure sensing is mandatory for terrain compensation
  • •Nozzle-specific calibration offsets improve DV0.9 stability more than global PID tuning

✅ Key Takeaways

  • 1Outlet pressure sensing is mandatory for terrain compensation
  • 2Nozzle-specific calibration offsets improve DV0.9 stability more than global PID tuning