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IRRIGATION_3

IRRIGATION_3. Design of Irrigation Systems by László Ormos. Design of Pressurized Irrigation System for Citrus Orchard. ( After Rajaram B. Patil, India; Mario Petrus (Cyprus); L aszlo Ormos (Hungary); Tshering Drukpa (Bhutan); Michael Nwachukwu (Nigeria); Gwendolyn Bidad-

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IRRIGATION_3

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  1. IRRIGATION_3 Design of Irrigation Systems by László Ormos

  2. Design of Pressurized Irrigation System for Citrus Orchard (After Rajaram B. Patil, India; Mario Petrus (Cyprus);Laszlo Ormos (Hungary); Tshering Drukpa (Bhutan); Michael Nwachukwu (Nigeria); Gwendolyn Bidad- Folgo (Philippines) Design Consideration • Farm land area: A=8 hectares • Crop: cytrus • Line space: l=6 m • Plant space: d=4 m • Root zone depth: ZR=0.8 m • Crop factor: KC=1 • Pan factor: KP=0.63 • Peak evaporation: EP =8.3 mm/day

  3. 4m Design of Pressurized Irrigation System for Citrus Orchard The farm field 6m 200m 400m

  4. Design of Pressurized Irrigation System for Citrus Orchard • Soil: clay loam • Infiltration rate: v=10 mm/hr • Specific weight: S=1.33 g/cm3 • Field capacity: FS=36.04 % • Permanent wilting point: PW=19.8 % • Peak water deficit:PWD=40 % • Emitter: dripper • Wetted area per dripper: PWA=30 % • Irrigation efficiency: ir=85 % • Maximum allowable operating hours: tmop=14 hrs/day • Water source: river, (60m far away from the field)

  5. Design of Pressurized Irrigation System for Citrus Orchard • Determination of irrigation interval Peak water consumption: Available net water for 100% coverage in the root zone layer:

  6. Design of Pressurized Irrigation System for Citrus Orchard Net water application depth: Irrigation interval Irrigation interval consists of 3 days for irrigation and 1 day for maintenance.

  7. Design of Pressurized Irrigation System for Citrus Orchard 2. Required irrigation rate Net water application depth for 100% coverage (adjusted) Net water application depth for 30% coverage (adjusted)

  8. Design of Pressurized Irrigation System for Citrus Orchard Gross water dose Required irrigation rate

  9. Design of Pressurized Irrigation System for Citrus Orchard • Dripper selection • Outlet water quantity of dripper: 3.5 l/hr • Diameter of wetted area: ~1.6 m (in clay loam soil) Wetted are per dripper

  10. Design of Pressurized Irrigation System for Citrus Orchard Number of required drippers Dripper spacing

  11. drippers Design of Pressurized Irrigation System for Citrus Orchard Dripper setting 4m 4m 6m

  12. Design of Pressurized Irrigation System for Citrus Orchard • Adjusted irrigation rate (as per selected dripper) • Irrigation time Since AIR>RIR the selected dripper satisfies requirements.

  13. Design of Pressurized Irrigation System for Citrus Orchard • Maximum number of shifts • Maximum area irrigated per shifts

  14. Design of Pressurized Irrigation System for Citrus Orchard • Position discharge

  15. From the water head 60m Design of Pressurized Irrigation System for Citrus Orchard • Farm lay-out A ~133.3m ~133.3m ~133.3m 200m 400m

  16. From the water head ~133.3m ~133.3m ~133.3m 60m Design of Pressurized Irrigation System for Citrus Orchard • Farm lay-out B 200m 400m

  17. References Azenkot, A.(1998):”Design Irrigation System”. Ministry of Agricul- ture Extension Service (Irrigation Field service), MASHAV Israel Dr. Avidan, A.(1995):”Soil-Water-Plant Relationship”. Ministry of Agriculture Extension Service (Irrigation Field service),CINADCO, Ministry of Foreign Affairs, MASHAV, Israel Sapir, E.-Dr. E. Yagev (1995):”Drip Irrigation”. Ministry of Agricul- ture and Rural Development, CINADCO, Ministry of Foreign Affairs, MASHAV, Israel Sapir, E.-Dr. E. Yagev (2001):”Sprinkler Irrigation”. Ministry of - culture and Rural Development, CINADCO,Ministry of Foreign Affairs, MASHAV, Israel Eng. Nathan, R. (2002):”Fertilization Combined with Irrigation (Fertigation)”. Ministry of Agriculture and Rural Development, CINADCO,Ministry of Foreign Affairs, MASHAV, Israel

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