Maximization of Water Productivity and Yield of Two Iceberg Lettuce Cultivars in Hydroponic Farming System Using Magnetically Treated Saline Water

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题名:	Maximization of Water Productivity and Yield of Two Iceberg Lettuce Cultivars in Hydroponic Farming System Using Magnetically Treated Saline Water
作者:	Abdelaziz, M.;Okasha, Abdelaziz M.;Eldi, Eman M.;Eldib, Eman M.;Elme, Adel H.;Elmetwalli, Adel H.;Ahsa, Aitazaz;Farooque, Aitazaz Ahsan;Mundhe, Zaher;Yaseen, Zaher Mundher;Elsaye, Salah;Elsayed, Salah
贡献者:	研究發展處學術發展組
关键词:	magnetic water treatment;hydroponics;soilless;iceberg lettuce;seawater;waterproductivity
日期:	2022-01-01
上传时间:	2023-03-28 02:34:06 (UTC+0)
出版者:	亞洲大學
摘要:	Egypt has limited agricultural land, associated with the scarcity of irrigation water andrapid population growth. Hydroponic farming, seawater desalination and magnetic treatment areamong the practical solutions for sustaining rapid population growth. In this regard, the mainobjective of the present research study was to design and construct a hierarchical engineering unitas a hydroponic farming system (soilless) to produce an iceberg lettuce crop using magneticallytreated saline water. The treatments included four types of irrigation water: common irrigation water(IW1) with an electrical conductivity (EC) of 0.96 dS/m as a control treatment, magnetically treatedcommon irrigation water (IW2) with an EC of 0.96 dS/m, saline water (IW3) with an EC of 4.56 dS/mand magnetically treated saline water (IW4) with an EC of 4.56 dS/m; three depletion ratios (DR)of ?eld capacity (DR0= 50%, DR1= 60% and DR2= 70%) and three slopes of hydroponic pipes(S1= 0.0%, S2= 0.025% and S3= 0.075%). The results revealed that seawater contributed 7.15% toproduce iceberg lettuce in the hydroponic system. The geometric parameter, the slope of the pipes,in?uenced the obtained luminous intensity by an average increase of 21% and 71% for S2and S3,respectively, compared with the zero slope (horizontal pipes). Magnetization of irrigation waterincreased the total soluble solids (TSS) and enhanced the fresh weight and water productivity ofboth iceberg lettuce varieties used. The maximum percentages of TSS were 5.20% and 5.10% forlemur and iceberg 077, respectively, for the combination IW4DR2S2. The highest values of freshweight and water productivity of 3.10 kg/m and 39.15 kg/m3were recorded with the combinationsIW3DR2S3and IW4DR1S3, respectively, for lemur and iceberg lettuce. The percentages of theseincreases were 109.46% and 97.78%, respectively, when compared with the combination IW1DR0S1.The highest values of iceberg lettuce 077 fresh weight and water productivity were 2.93 kg/m and36.15 kg/m3, respectively, which were recorded with the combination IW4DR1S3. The percentagesof these increases were 112.32% and 120.56%, respectively, when compared with IW1DR0S1(thecontrol treatment)
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