Effect of initial soil salinity and subirrigation water salinity on potato tuber yield and size |
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| Institution: | 1. Department of Agricultural and Biosystems Engineering, Faculty of Agricultural and Environmental Sciences, Macdonald Campus of McGill University, 21111 Lakeshore Road, Ste-Anne de Bellevue, Que., Canada H9X 3V9;2. Department of Plant Science, Faculty of Agricultural and Environmental Sciences, Macdonald Campus of McGill University, 21111 Lakeshore Road, Ste-Anne de Bellevue, Que., Canada H9X 3V9;1. Department of Internal Medicine II, Medical University of Vienna, Vienna 1090, Austria;2. 3rd Department of Medicine, Cardiology and Intensive Care Medicine, Wilhelminenspital, Vienna, Austria;1. School of Agriculture, Forest, Food and Environmental Sciences – University of Basilicata, Viale dell’Ateneo Lucano, 10, 85100 Potenza, Italy;2. Institute of Sciences of Food Production, National Research Council (CNR-ISPA), Via Amendola, 122/O, 70126, Bari, Italy;1. Department of Water Resources Engineering, Tarbiat Modares University, Tehran, Iran;2. Department of Ecosystem Science and Management and Department of Biological and Agricultural Engineering, Texas A&M University, USA;1. Institute for Strategies and Technology Assessment, Julius Kühn-Institut (JKI) | Federal Research Centre for Cultivated Plants, Stahnsdorfer Damm 81, 14532 Kleinmachnow, Germany;2. Institute of Farm Management (410c), University of Hohenheim, Stuttgart, Germany;3. Rural Development Theory and Policy (490a), University of Hohenheim, Stuttgart, Germany;4. College of Water Resources and Architectural Engineering, Tarim University, Alaer, China;5. College of Resources and Environmental Science, Xinjiang University, Urumqi, China;6. College of Economics and Management, China Agricultural University, Beijing, China;1. GEOHYD, Département de Géologie, Faculté des Sciences Semlalia, Université Cadi Ayyad, Marrakech, Morocco;2. LP2M2E, Département de Physique Appliquée, Faculté des Sciences et Techniques, Université Cadi Ayyad, Marrakech, Morocco;3. LMME, Département de Physique, Faculté des Sciences Semlalia, Université Cadi Ayyad, Marrakech, Morocco;4. CESBIO, Centre d''Etudes Spatiales de la Biosphère, Toulouse, France;5. CNESTEN, Centre National de l''Energie des Sciences et des Techniques Nucléaires, Morocco;1. Department of Soil Science, Faculty of Agriculture, Shahid Bahonar University of Kerman, Iran;2. Department of Soil Science, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran;3. Department of Irrigation and Drainage, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran |
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| Abstract: | A field lysimeter study was conducted to investigate the effect of initial soil salinity and salinity level of brackish subirrigation water on tuber weight and tuber size of three potato (Solanum tuberosum L.) cultivars (Kennebec, Norland and Russet Burbank) under simulated arid conditions. Both saline and non-saline initial soil conditions were simulated in a total of 36 lysimeters. Eighteen lysimeters were flushed with fresh water (0.2 dS/m), while the remaining 18 lysimeters were flushed with brackish water (2 dS/m). For each soil condition, two subirrigation water concentrations, 1 and 9 dS/m, were used in nine lysimeters each. For each subirrigation water treatment, three potato cultivars were grown. In all lysimeters, water table was maintained at 0.4 m from the soil surface. Arid conditions were simulated by covering the lysimeter top with plastic mulch, allowing the potato shoots to grow through a cut in the mulch. The average root zone salinities (ECw) were found to be 1.2 and 1.5 dS/m in non-saline lysimeters subirrigated with 1 and 9 dS/m waters, respectively. The corresponding salinities were 3.2 and 3.7 dS/m in the saline lysimeters. Across cultivars, there was no significant effect of either initial soil salinity or subirrigation water salinity on total tuber weight. However, the weight of Grade A tubers was higher in non-saline soil than in saline soil. Kennebec and Russet Burbank Grade A tuber weights were not affected by the initial soil salinity. On the contrary, a significant reduction in Grade A and total tuber weight under initially saline soil was evident for the Norland cultivar. |
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