Ibrahim, A., Sokkar, M., Farg, E., Mohamed, M., Nosseir, M. (2022). Deficit Irrigation Technique to Improve Water Productivity of Avocado Grown on Mulched Sandy Soi. Arab Universities Journal of Agricultural Sciences, 30(2), 1-13. doi: 10.21608/ajs.2022.120218.1462
Ahmed Ibrahim; Mostafa Sokkar; Eslam Farg; Manal Mohamed; Mona Nosseir. "Deficit Irrigation Technique to Improve Water Productivity of Avocado Grown on Mulched Sandy Soi". Arab Universities Journal of Agricultural Sciences, 30, 2, 2022, 1-13. doi: 10.21608/ajs.2022.120218.1462
Ibrahim, A., Sokkar, M., Farg, E., Mohamed, M., Nosseir, M. (2022). 'Deficit Irrigation Technique to Improve Water Productivity of Avocado Grown on Mulched Sandy Soi', Arab Universities Journal of Agricultural Sciences, 30(2), pp. 1-13. doi: 10.21608/ajs.2022.120218.1462
Ibrahim, A., Sokkar, M., Farg, E., Mohamed, M., Nosseir, M. Deficit Irrigation Technique to Improve Water Productivity of Avocado Grown on Mulched Sandy Soi. Arab Universities Journal of Agricultural Sciences, 2022; 30(2): 1-13. doi: 10.21608/ajs.2022.120218.1462
Deficit Irrigation Technique to Improve Water Productivity of Avocado Grown on Mulched Sandy Soi
1Soils Department, Faculty of Agriculture, Ain Shams University, P.O. Box 68, Hadayek Shoubra 11241, Cairo, Egypt
2PICO for Modern Agriculture Company, Zamalek, Cairo, Egypt
3Agriculture Applications, Soils, and Marine Division, National Authority For Remote Sensing Space Sciences (NARSS), Cairo, Egypt
Abstract
A field experiment was conducted in new reclaimed areas to improve avocado trees water productivity cultivated under deficit irrigation and mulching. The deficit irrigation treatments were 90, 80, 70, and 60% of reference evapotranspiration (ETo). Results revealed that The average water requirements during different avocado trees physiological growth stages were 613, 1509, 1755, 1391, and 632 m3 /fed for flowering to end of fruit set, fruit set to approximately 50% of the expected market fruit size, during the fruit growth stage, during the fruit ripening stage, and during the flower bud formation stage, respectively. These values represent approximately 10.4%, 25.6%, 29.7%, 23.6%, and 10.7% of the total yearly water requirement. The averages irrigation frequency were 2.45, 2.61, 2.72, 2.87, and 3.91day for 100, 90, 80, 70 and 60% ETo treatments, respectively. The highest crop water productivity value of 1.24 kg/m3 water was attained at 70% ETo followed by 1.18 kg/m3 water at 80% ETo while the least crop water productivity (1.06 kg/m3 water) was realized at 100% ETo. The crop water requirement of 5110 m3 /fed/year with high irrigation frequency is recommended for mulched sandy soil cultivated with avocado trees.
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