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Impact of Different Levels of Supplemental Irrigation on Olive Productivity

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Impact of Different Levels of Supplemental Irrigation on Olive Productivity

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Impact of Different Levels of Supplemental Irrigation on Olive Productivity

  1. 1. Impact of Different Levels of Supplemental Irrigation on Olive Productivity N. El Jouni1, M. Hayek1, F. Ayesh1, V. Nangia3, M. Karrou2 and T. Oweis2 1General Commission for Scientific Agricultural Research (Syria) 1International Center for Agricultural Research in the Dry Areas (Jordan/Morocco)
  2. 2. Study general objectives • To enhance crop yields of smallholder olive farmers through the optimization of water management practices applied to olive cultivation • Improved and more stable olive yields are going to lead to improved earnings and livelihoods for the targeted smallholder farmers
  3. 3. Specific objectives • To increase yield of olive groves in the target areas by using advanced strategies • To minimize yearly fluctuations in yield, and securing more stable farm income • To increase water productivity of irrigated olive
  4. 4. Syria Rainfall ~ 300-400 mm Treatments (2 replicates of each) Rainfed (control) Irrigate at 100% CWR Irrigate at 50% CWR
  5. 5. Results • 2012 678 515 353 0 100 200 300 400 500 600 700 800 100% ETc 50% ETc Rainfed Waterapplied(rainfall+ irrigation,mm) Treatment
  6. 6. Olive Yield 11076 9828 7368 9984 7956 4056 0 2000 4000 6000 8000 10000 12000 100% ETc 50% ETc Rainfed Yield(kg/ha) Treatment Sorani cv. Jlout cv.
  7. 7. Oil Yield 2437 2345 11781268 1218 769 0 500 1000 1500 2000 2500 3000 100% ETc 50% ETc Rainfed Oilyield(kg/ha) Treatment
  8. 8. Water Productivity 1.63 1.91 2.09 1.47 1.54 1.15 0.0 0.5 1.0 1.5 2.0 2.5 100% ETc 50% ETc Rainfed Waterproductivity(kg/m3ET) Treatment
  9. 9. Key results from 2012 data • 50% ETc (353 mm rainfall + 162 mm irrigation) compared to rainfed plantation, – fruit yield increased by 2,460 (33%) to 3,900 (96%) kg/ha – Yield of Sorani cv. was always higher than Jlout cv. at all locations – Water productivity ranged between 1.1 and 2.1 kg/m3 ET – There was a further increase of 1,250 (13%) to 2,030 (25%) kg/ha by switching from 50% ETc to 100% ETc
  10. 10. Key results from 2012 data (cont’d) The lowest WP was found for rainfed Sorani cv. at farmer’s field and highest for rainfed Sorani cv. at experimental station in Dara’a, but yields were always higher for irrigated olives plantations compared to rainfed proving that there is a loss of yield if we do not irrigate In terms of percentage oil extracted from fruit, Sorani cv. grown under 50% ETc treatment produced highest values (24%)
  11. 11. Key results from 2013 data (not shown here) • Yields increased by as much as 113% (4,056 kg/ha vs. 8,580 kg/ha) when 142 mm of irrigation was applied (in addition to 416 mm rainfall) by drip • A further increase of 1,560 kg/ha (21%) was achieved by applying additional 142 mm of irrigation (100% ETc) in addition to the rainfall
  12. 12. Statistical Analyses Differences (P < 0.05) • Cultivar • Irrigation treatment • Oil yield • Oil WP • Olive yield
  13. 13. Cost-benefit Analysis Practices 100% Treatment 50% Treatment Rainfed Treatment Inputs: Cost (SYP) Land preparation 15,000 15,000 10,000 Fertilization 36,000 36,000 18,000 Pesticides 20,000 20,000 20,000 Irrigation 43,700 22,000 0 Harvest 66,456 58,968 34,944 Miscellaneous 42,000 42,000 22,000 Total 223,156 193,968 104,944 Revenues: Jlut Sorani Jlut Sorani Jlut Sorani Fruit yield (kg/ha) 9,750 10,320 8,060 8,586 4,446 4,816 Income (per ha) 349,440 387,660 278,460 343,980 141,960 152,880 Net profit (per ha) 126,284 164,504 84,492 150,012 37,016 47,936 Net profit (US$/ha) 2,526 3,290 1,690 3,000 740 960 US$ increase from rainfed treatment (%) 1,786 (241%) 2,330 (243%) 950 (130%) 2,040 (213%) - -
  14. 14. Overarching conclusions • Applying a small amount of water by drip irrigation, in addition to rainfall, can be beneficial in two ways – – it helps increase the yields of fruits as well as oil, and – it helps stabilize the yields
  15. 15. Thank you

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