Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system
Yıl: 2020 Cilt: 4 Sayı: 2 Sayfa Aralığı: 134 - 141 Metin Dili: İngilizce DOI: 10.31015/jaefs.2020.2.2 İndeks Tarihi: 03-10-2020
Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system
Öz: The aim of this study was to determine the effects of different rates and forms of nitrogen (N) on shoot growth androot morphological and leaf physiological responses of watermelon (cv. Crimson Tide F1) under hydroponic growthcondition. The nutrient solution experiment was conducted between January - March in 2018 by using an aeratedDeep Water Culture (DWC) technique in a fully automated climate room placed in the Plant Physiology Laboratoryof Erciyes University, Faculty of Agriculture, Kayseri in Turkey. Plants were tested under two N-Rates (N1: 1000 andN2: 2000 µM N) and three different N-Forms (Am-N: NH4+, Nit-N: NO3-, 50% mixture of both N-Forms Mix-N:NH4+NO3) by growing in 8 L pots filled continuously aerated nutrient solution (modified Hoagland). The experimentwas conducted with a completely randomized block design with four replications. From each pot two plants wereharvested 42 days after treatment (DAT) by separating into stem, leaf and root fractions. The results indicated thatshoot growth, root morphological and leaf physiological responses were significantly (p<0.001) affected by N-Rate,N-Form and N-Rate x N-Form interaction. The lowest performance under sole Am-N supply was achieved, since itseverely reduced shoot and root growth and leaf area development as compared to sole Nit-N and Mix-N treatments.Irrespective of N rates, best growth performance in shoot growth was achieved under Mix-N supply, while rootgrowth significantly improved under sole Nit-N supply. All these clearly indicate that the application of sole ammonium (1000 µM N) is detrimentally toxic for hydroponically grown watermelon plants. On the other hand, a 50%mixed of ammonium with nitrate even at a higher dose (N2: 2000 µM ammonium N) can be more advantageous forthe growth and development of watermelon plants grown in the hydroponic system. Furthermore, our study showedthat the effects of N-Form (Nit-N and Mix-N) on the improvement of shoot growth, root morphology and leaf physiological development and photosynthesis were significantly higher than the effects of N-Rate. Therefore, the application of nitrogen fertilizers in the form of Mix-N could be a useful N management strategy for growth and yield ofwatermelon plants under hydroponic conditions.
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| APA | ULAS A (2020). Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system. , 134 - 141. 10.31015/jaefs.2020.2.2 |
| Chicago | ULAS Abdullah Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system. (2020): 134 - 141. 10.31015/jaefs.2020.2.2 |
| MLA | ULAS Abdullah Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system. , 2020, ss.134 - 141. 10.31015/jaefs.2020.2.2 |
| AMA | ULAS A Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system. . 2020; 134 - 141. 10.31015/jaefs.2020.2.2 |
| Vancouver | ULAS A Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system. . 2020; 134 - 141. 10.31015/jaefs.2020.2.2 |
| IEEE | ULAS A "Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system." , ss.134 - 141, 2020. 10.31015/jaefs.2020.2.2 |
| ISNAD | ULAS, Abdullah. "Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system". (2020), 134-141. https://doi.org/10.31015/jaefs.2020.2.2 |
| APA | ULAS A (2020). Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system. International Journal of Agriculture, Environment and Food Sciences, 4(2), 134 - 141. 10.31015/jaefs.2020.2.2 |
| Chicago | ULAS Abdullah Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system. International Journal of Agriculture, Environment and Food Sciences 4, no.2 (2020): 134 - 141. 10.31015/jaefs.2020.2.2 |
| MLA | ULAS Abdullah Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system. International Journal of Agriculture, Environment and Food Sciences, vol.4, no.2, 2020, ss.134 - 141. 10.31015/jaefs.2020.2.2 |
| AMA | ULAS A Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system. International Journal of Agriculture, Environment and Food Sciences. 2020; 4(2): 134 - 141. 10.31015/jaefs.2020.2.2 |
| Vancouver | ULAS A Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system. International Journal of Agriculture, Environment and Food Sciences. 2020; 4(2): 134 - 141. 10.31015/jaefs.2020.2.2 |
| IEEE | ULAS A "Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system." International Journal of Agriculture, Environment and Food Sciences, 4, ss.134 - 141, 2020. 10.31015/jaefs.2020.2.2 |
| ISNAD | ULAS, Abdullah. "Growth, root morphology and leaf physiology of watermelon as affected by various rates and forms of nitrogen in the hydroponic system". International Journal of Agriculture, Environment and Food Sciences 4/2 (2020), 134-141. https://doi.org/10.31015/jaefs.2020.2.2 |
