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Advantages of Drip Irrigation


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A presentation on the advantages of using drip irrigation in agriculture by Eli Matan, chief agronomist at Netafim.

Published in: Technology

Advantages of Drip Irrigation

  1. 1. Drip IrrigationDrip IrrigationAdvantagesAdvantagesBy Eli Matan - Agronomist1
  2. 2. 8
  3. 3. Drip irrigation changes the desertDrip irrigation changes the desert9
  4. 4. Drip IrrigationDrip IrrigationIrrigates the plant and not the soil.Deliver the water by a pipe (small diameter) with“smart holes”- Drippers. The water flow rate islow and uniform.Every plant gets the same.10
  5. 5. The Characteristics of Drip Irrigationsystem:1. The water goes out from a point source.2. The volume of the wetted soil is a small & restricted.3. The root system, is very dense and full of activerootlets.5. Smaller root system: advantage and disadvantage4. A very frequent application is a common option.5. Fertilization through the system (fertigation) is veryconvenient.11
  6. 6. Efficiency of irrigating in closed systems -Efficiency of irrigating in closed systems -pressurized irrigationpressurized irrigationSprinklers above canopy – average irrigation efficiency: 60% - 80%Sprinkler efficiency during day with slight wind: 60% - 65%Sprinkler efficiency during hours without wind: 70% - 75%Sprinkler efficiency during nighttime:80%.Efficiency of irrigation with mini-sprinklers in orchards is80%.Efficiency of drip irrigation: 95%.12
  7. 7. Field crops- different methodsirrigationRain fedRain fedFlood furrowFlood furrowPivot sprinklersPivot sprinklersDripDrip14
  8. 8. 15
  9. 9. Efficient root zoneEfficient root zone16
  10. 10. 17
  11. 11. Universal solutionUniversal solution• Unlimited geometry. optimal land use.• Suitable for all soil types.18
  12. 12. Soil type19
  13. 13. Differences inDifferences in Water SpacingWater Spacingaccording toaccording to soil typesoil typeHeavyHeavyHeavyHeavy MediumMediumMediumMedium LightLightLightLight20
  14. 14. Field crops- different methodsfertilization21
  15. 15. Netafim’s new line of dosingsystemsSometimes the main difference betweena poor looking field and a healthy looking fieldIs the fertigation unit22
  16. 16. Broad cast fertigation23
  17. 17. Nutrigation24
  18. 18. All of Them Wet All or a Great Part of the Soil.Soil ManagementIrrigation Systems which encourage weeds are:- Flood Irrigation- Furrow Irrigation- Overhead Sprinklers- Under Canopy Sprinklers (Partly)25
  19. 19. Universal solutionUniversal solution• Steep terrains.• Compatible to all crops.26
  20. 20. • Use of Low quality water- Foliar absorption of saltsand leaf burn is avoided, high frequency irrigation= lower saltcontent, salts from the drip wetted area are continuouslyleached from the active root zone• Chemigation- labor and cost saving, precise application toroot zone, concentration and amount can be adapted to plantneeds, according to growth stage27
  21. 21. What is the big difference?1. In flood and sprinkling Irrigation the water aremoving in a Piston character, pushing the Airand Nutritions away.2. In drip irrigation the water are moving in anOnion shape. The Air and Nutritions staysnear by the roots.28
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  23. 23. Drip irrigation- disadvantages.• High price: expensive equipment.• Filtration is a must.• A lot of work at the beginning and the end ofseason.• Can not be used for plant germination unlessdistance between drips is short (price, flow rate).• Limited reserved water in soil - mistakes can befatal.31
  24. 24. LightTemperatureHumidityCO2Water &Nutrients32
  25. 25. Porosity & Soil water statusPorosity & Soil water status ST- all porous are full withwater. FC- water only in CapillaryPorous. WP- water within balksWater tension increases asmoisture declines.33
  26. 26. Soil moisture regimesSoil moisture regimes• Saturation - Maximum moisture content - NoOxygen!!!• Field Capacity - Moisture level after drainageEnds. High moisture & Oxygen.• Wilting Point - Moisture level at which sunflowerplant wilts.• Water Holding Capacity - water contentbetween FC & WP.34
  27. 27. Monitoring & control principlesMonitoring & control principles• How muchHow much andand whenwhen to irrigateto irrigate• What kind ofWhat kind of toolstools we have to getwe have to getthe right decisionthe right decision35
  28. 28. 06121824303642482 4 6 8 10 12 14dayssoilwatercontents-cm/100cmofsoilDrainageField capacityPlant water useWilting pointFCAWPWPWhen to irrigateWhen to irrigate??????39
  29. 29. Flood irrigation40
  30. 30. Sprinkles irrigation41
  31. 31. Drip irrigation42
  32. 32. Orchards43
  33. 33. 44Golden Delicious, 85 ton/ha. Ein Zivan, Israel44
  34. 34. Nectarine- 50 ton/ha, Yiftach, Israel45
  35. 35. Apple- Starking, 70 ton/ha, Manara, Israel46
  36. 36. 47Table grapes, Thompson seedless, 55 ton/haLachis Israel47
  37. 37. 48Pomegranate, 50 ton/ha. Magal , Israel48
  38. 38. Field crops49
  39. 39. Corn50
  40. 40. Onion51
  41. 41. Potato52
  42. 42. Carrot53
  43. 43. ProcessingTomato54
  44. 44. Cabbage55
  45. 45. Lettuce56
  46. 46. Greenhouse57
  47. 47. •Tomato58
  48. 48. Strawberry59
  49. 49. Cucumber60
  50. 50. Pepper61
  51. 51. Water melon62