Different irrigation methods and water stress effects on potato yield and yield components |
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| Institution: | 1. Department of Irrigation and Drainage, Faculty of Agriculture, Mustafa Kemal University, 31001 Hatay, Turkey;2. Department of Crop Science, Faculty of Agriculture, Mustafa Kemal University, 31001 Hatay, Turkey;1. International Potato Center-Liaison Office for Central Asia and the Caucasus, 6 Osiyo str., 100000 Tashkent, Uzbekistan;2. International Potato Center-Liaison Office for Bolivia, Calle Gabriel Gonsalvez 240, La Paz, Bolivia;3. International Potato Center, Avenida La Universidad 795, La Molina, Apartado 1558, Lima 12, Peru;1. International Water Management Institute, P.O. Box 5689, Addis Ababa, Ethiopia;2. Tigray Agricultural Research Institute, P.O. Box 492, Mekelle, Ethiopia;3. UNESCO-Ihe Institute for Water Education, P.O. Box 3015, Delft, The Netherlands;1. Department of Agroecology, Aarhus University, Blichers Allé 20, Postboks 50, DK-8830 Tjele, Denmark;2. Department of Agricultural Research for Northern Sweden, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden;1. International Potato Center (CIP), Apartado 1558, Lima 12, Peru;2. Water Resources PhD Program, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru;1. Plant Nutrition Department, National Research Centre, Giza, Egypt;2. Vegetable Research Department, National Research Centre, Giza, Egypt;3. Institute for Horticultural Sciences, Humboldt University of Berlin, Berlin, Germany |
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| Abstract: | This research was conducted during the spring seasons of 2000 and 2002 in Hatay province located in the East Mediterranean Region of Turkey. The research investigated the effects of two drip irrigation methods and four different water stress levels on potato yield and yield components. The surface drip (SD) and subsurface drip (SSD) irrigation methods were used. The levels were full irrigation (I100), 66% of full irrigation (I66), 33% of full irrigation (I33) and un-irrigated (I0) treatments. Five and three irrigation were applied in 2000 and 2002 early potato growing seasons, respectively. Total irrigation amount changed from 102 to 302 mm and from 88 to 268 mm in 2000 and 2002, respectively. Seasonal evapotranspiration changed between 226 and 473 mm and 166 and 391 mm in 2000 and 2002, respectively. SD and SSD irrigation methods did not result in a significant difference on yield. However, SD method has more advantages than SSD method, which has difficulties in replacement and higher system cost. Irrigation levels resulted in significant difference in both years on yield and its components. Water stress significantly affected the yield and yield parameters of early potato production. Water deficiency more than 33% of the irrigation requirement could not be suggested.Water use efficiency (WUE) of SD irrigation methods had generally higher values than SSD irrigation methods. Treatment I33 gave maximum irrigation water use efficiency (IWUE) for both years. SSD irrigation method did not provide significant advantage on yield and WUE, compared to SD irrigation in early potato production under experimental conditions. Therefore, the SD irrigation method would be recommended in early potato production under Mediterranean conditions. |
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