Irrigation Pointers for Raised Beds          in High Tunnels
Raised Beds   Warm quicker   Better Drained
Why Manage Irrigation?   Maximize return on investment       High tunnel structure       Transplants/seed       Irriga...
Types of Irrigation   Overhead   Surface   Micro-Irrigation   Subsurface
Micro-Irrigation   Point Source       Micro-Sprinklers etc.   Line Source       T-Tape etc.
Role of water in plants   Cell processes   Cooling   Carry nutrients   Turgor pressure   Photosynthesis
Advantages of Drip   Improved crop yield and quality   Better management of applied crop protection materials   Crop pr...
Disadvantages   High management requirement. A delay    in operation decision may result in    irreversible damage to cro...
Soil type wetting patterns
Monitor soil moisture
Factors that influence soil moisture   Sun   Wind   Rain   Temp   Relative humidity   Crop removal
Soil Moisture Techniques The "Feel Method" Neutron Probe Electrical Resistance Soil Tension New Technology Plant Ind...
Feel
Water quality   pH   Hardness   Iron   Suspended materials
Success   Determine number of lines per bed and spacing    and flow rate   Zone as appropriate   Fertigate in timely fa...
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
Hightunnelirrigationpdf
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  1. 1. Irrigation Pointers for Raised Beds in High Tunnels
  2. 2. Raised Beds Warm quicker Better Drained
  3. 3. Why Manage Irrigation? Maximize return on investment  High tunnel structure  Transplants/seed  Irrigation equipment Minimize crop loss  Biotic disease  Abiotic disease Improve crop quality  Firmness  Flavor
  4. 4. Types of Irrigation Overhead Surface Micro-Irrigation Subsurface
  5. 5. Micro-Irrigation Point Source  Micro-Sprinklers etc. Line Source  T-Tape etc.
  6. 6. Role of water in plants Cell processes Cooling Carry nutrients Turgor pressure Photosynthesis
  7. 7. Advantages of Drip Improved crop yield and quality Better management of applied crop protection materials Crop protection savings due to reduced run-off Fertilizer can be delivered directly to the plant’s root zone Water savings Less evaporation Uniform watering Energy savings Decreased disease and weed pressure
  8. 8. Disadvantages High management requirement. A delay in operation decision may result in irreversible damage to crop. May be easily damaged by rodents, insects and workers.
  9. 9. Soil type wetting patterns
  10. 10. Monitor soil moisture
  11. 11. Factors that influence soil moisture Sun Wind Rain Temp Relative humidity Crop removal
  12. 12. Soil Moisture Techniques The "Feel Method" Neutron Probe Electrical Resistance Soil Tension New Technology Plant Indicators Computerized Irrigation Scheduling
  13. 13. Feel
  14. 14. Water quality pH Hardness Iron Suspended materials
  15. 15. Success Determine number of lines per bed and spacing and flow rate Zone as appropriate Fertigate in timely fashion with correct materials Know your water quality Automation????? Mechanical monitoring of soil moisture levels

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