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IRRIGATION
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IRRIGATION

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  1. IRRIGATION Rick Schlegel Agricultural Engineer USDA - NRCS OKLAHOMA

  2. HOW IS OKLAHOMA NRCS ASSISTING WITH IRRIGATION AND SAVING WATER? • INSTALLING MORE EFFICIENT IRRIGATION SYSTEMS • DEVELOPING IRRIGATION WATER MANAGEMENT PLANS • PROMOTING IRRIGATION SCHEDULING USING EVAPOTRANSPIRATION (ET) • PROMOTING WELL DECOMMISIONING

  3. HOW CAN WE MAKE SYSTEMS MORE EFFICIENT? • CONVERTING FROM LESS EFFICIENT FURROW OR SIDE ROLL IRRIGATION SYSTEMS TO MORE EFFICIENT CENTER PIVOTS OR LINEAR SYSTEMS • CONVERTING LESS EFFICIENT SPRINKLER SYSTEMS TO GREATER EFFICIENCIES OR REPLACING WITH SUBSURFACE DRIP SYSTEMS

  4. GENERALLY SPEAKING, WHAT TYPES OF INEFFICIENT SYSTEMS ARE WE REPLACING? • Furrow Systems • Hand Move Systems • Side Roll Systems • Conventional Impact Systems • Conventional Spray Systems

  5. FURROW IRRIGATION

  6. FURROW IRRIGATION USING SIPHON TUBES

  7. FURROW IRRIGATION USING GATED PIPE AND SURGE VALVE

  8. Furrow Irrigation Using Collapsible Gated Pipe

  9. Hand Move Sprinkler System

  10. CONVENTIONAL SIDE ROLL IMPACT SPRINKLER Side Roll Sprinkler System

  11. CONVENTIONAL IMPACT

  12. CONVENTIONAL SPRAY

  13. WHAT TYPES OF SYSTEMS ARE WE PROMOTING TO REPLACE THE OLDER LESS EFFICIENT SYSTEMS? • LEPA - Low Energy Precision Application • LESA - Low-Elevation Spray Application • LPIC - Low Pressure In-Canopy • MESA - Mid-Elevation Spray Application • Subsurface Drip Irrigation Systems

  14. LEPA & LESA IRRIGATION SYSTEMS

  15. LEPA SYSTEM

  16. LEPA SYSTEM

  17. LESA SYSTEM

  18. LPIC & MESA IRRIGATION SYSTEMS

  19. LPIC SYSTEM

  20. MESA MESA SYSTEM

  21. USDA-NRCS Sprinkler Certification Requirements CPED PROGRAM USDA-ARS developed the computer program CPED needs a pivot design printout from the manufacturer for input data CPED is used to certify the Coefficient of Uniformity (CU) of the pivot

  22. OTHER SYSTEM IMPROVEMENTS • INSTALLING PRESSURE REGULATORS • INSTALLING FLOW METERS • INSTALLING CHEMIGATION VALVES • WELL DECOMMISSIONING

  23. PRESSUREREGULATORS

  24. PRESSURE

  25. FLOWMETER

  26. CHEMIGATION VALVE

  27. WELL DECOMMISSIONING

  28. DRIP IRRIGATION SYSTEMS

  29. Drip Tapes

  30. DRIP LINES PLOWED IN

  31. FILTER SYSTEM

  32. DEVELOPING IRRIGATION WATER MANAGEMENT PLANS

  33. IRRIGATION SCHEDULING USING EVAPOTRANSPIRATION ( ET )

  34. ET GAGE

  35. EVAPOTRANSPIRATION USING THE OKLAHOMA MESONET

  36. MESONET SITE

  37. QUESTIONS ?