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    Assessment of irrigation water salinity effects on red beet under Mediterranean conditions
    (Akdeniz Üniversitesi, 2022) Kurunc, Ahmet; Doğanay, Kıvanç Hayri
    Plant tolerance to salinity stress is vital for irrigation scheduling, decision-making, planning and operation, and most critically, water resource management. Although there are numerous scientific data on the response of various plants to salinity stress, there are few studies on red beet in the literature, and specifically under Mediterranean conditions. This study aimed to investigate the effects of water salinity stress on water use, growth, yield parameters, and salinity threshold and slope values of red beet in Mediterranean conditions. In addition to control (0.6 dS m-1), five irrigation water salinity levels including low (1.5 dS m-1), medium-low (3.0 dS m-1), medium (4.5 dS m-1), medium-high (6.0 dS m-1) and high salinity (8.0 dS m-1) stresses were used as treatments. Increased water salinities caused increases in electrical conductivity and pH values of saturated soil paste extracts and drainage waters, while decreases in water use affected plant height storage root yield and water use efficiency. The salinity threshold and slope values of red beet were determined as 3.10 dS m-1 and 4.42% per dS m-1.
  • [ X ]
    Öğe
    Assessment of water stress effects on red beet under the Mediterranean conditions
    (Akdeniz Üniversitesi, 2022) Kurunc, Ahmet; Doğanay, Kıvanç Hayri
    Although there are numerous scientific data on the response of various plants to water stress, there are few studies on red beet in the literature, and non-specifically under the Mediterranean conditions. This study aimed to investigate the effects of water stress (WS) levels (control-WS0, low-WS20, medium-WS40, high-WS60, and extreme-WS80) on water use, growth, yield parameters, and yield response factor of red beet (Beta vulgaris) in Mediterranean conditions. During the growing season, the highest daily evapotranspiration values were 3.7, 2.8, 2.1, 1.4, and 0.7 mm for the control treatment, low, medium, high, and extreme water stresses, respectively. Soil salinity, plant height, fresh leaf yield, and storage-root yield values were decreased as water stress increased. However, there were no significant differences in soil pH, taproot length, and plant water use efficiency between treatments. Significantly important strong- or moderate-positive linear correlations were observed between soil salinity, evapotranspiration, plant height, fresh leaf yield, and storage-root yield values. The yield response factors for red beet storage-root and fresh leaf yields were found to be 0.88 and 0.98, respectively. The results revealed that red beet is slightly tolerant to water stress, with comparatively lower storage-root and fresh leaf yield reductions under the reduced evapotranspiration caused by water stress.
  • [ X ]
    Öğe
    Salinity Stress Effects on the Growth Yield and Quality Performance of Two Sweet Potato Varieties
    (Amer Chemical Soc, 2023) Doganay, Kivanc Hayri; Kurunc, Ahmet; Dincer, Cuneyt
    Theyield response of several sweet potato varieties to salinitystress has been extensively studied in the scientific literature,but no research on the Koganesengan and Beniazuma varieties has beenidentified. The purpose of this study was to examine the effects ofvarious irrigation salinity levels on the growth (vine and tuber lengths,stem and tuber diameters, and number of leaves, shoots, and tubers),yield (fresh, dry, tuber, and total yields, and water use efficienciesfor vine, tuber, and total yields), and quality parameters (dry matter,ash, crude fiber, starch, phenolic matter, antioxidant activity, ss-carotene,ascorbic acid, protein, saccharose, glucose, and fructose contents)of these sweet potato varieties under drip irrigation. The findingsshow that without a varietal difference, increasing water salinitylevels increased soil salinity and decreased soil pH values. Somegrowth and yield parameters of Beniazuma were negativelyaffected by the salinity level, but not those of Koganesengan.Irrigation salinity levels only had an effect on the crude fiber contentand antioxidant activity of Koganesengan and the ash,starch, ss-carotene, and ascorbic acid contents of Beniazuma.Significant variations between varieties were only seen under thecontrol treatment for all yield parameters (except dry vine yield)and water use efficiency values. According to the calculated salinitythreshold and slope values, Beniazuma is more sensitiveto salt stress than Koganesengan.