Deficit Irrigation Technique to Improve Water Productivity of Avocado Grown on Mulched Sandy Soi | ||
| Arab Universities Journal of Agricultural Sciences | ||
| Article 6, Volume 30, Issue 2, December 2022, Pages 315-327 PDF (588.42 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ajs.2022.120218.1462 | ||
| Authors | ||
| Mostafa Sokkar1; Eslam Ahmed2; Ahmed Ibrahim* 3; Manal Mubarak3; Mona Nosseir3 | ||
| 1PICO for Modern Agriculture Company, Zamalek, Cairo, Egypt | ||
| 2Agriculture Applications, Soils, and Marine Division, National Authority For Remote Sensing Space Sciences (NARSS), Cairo, Egypt | ||
| 3Soils Department, Faculty of Agriculture, Ain Shams University, P.O. Box 68, Hadayek Shoubra 11241, 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. | ||
| Keywords | ||
| Avocado crop; Drip irrigation; Soil mulching; Deficit irrigation; Water productivity | ||
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