The Response of Sugar Beet (Beta vulgaris L.) to Different Irrigation Methods and Different Nitrogen Fertilization Levels in Summer Time
Ammar Mahmoud(1) Entessar Al Jbawi*(2) Farag Na’om(3) Abdel Ghani Al-Khaldi(4) and Bayan Al-Abdallah(5)
(1). Ph.D. student, Aleppo, Syria.
(2). Researcher at Administration of Crops Research, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.
(3). Professor, Department of Drainage and Land Reclamation, Faculty of Agriculture, Aleppo University, Syria.
(4). Researcher at Administration of Cotton, General Commission for Scientific Agricultural Research (GCSAR), Aleppo, Syria.
(5). Researcher at Hama Research Center, General Commission for Scientific Agricultural Research (GCSAR), Hama, Syria.
Received: 15/08/2021 Accepted: 20/09/2021
The study was conducted at Taizin Research Station for irrigation, Hama Agricultural Research Center, General Commission for Scientific Agricultural Research (GCSAR), during summer time, the growing season of 2020/2021, to study the effect of four irrigation methods (sprinkle, foggy, drip and furrow) and four levels of nitrogen fertilizer (0, 200, (+25%) 250 and (-25%) 150 kg N/hectare) on some yield and quality traits of sugar beet monogerm variety (Dita). The experiment was laid according to the randomized complete block design (RCBD) arranged in split plot, where the main plots occupied by irrigation methods, while the sub plots allocated with fertilization levels, with three replications. The results showed that the use of drip irrigation saves water consumed by 34.4% and increases the number of plants by 5%, and does not negatively affect the qualitative traits (Brix, sucrose and purity), while reducing the yield of roots by about 17% and 8% of the top yield, and 16% of sugar yield, compared to furrow irrigation. The statistical analysis exhibited that there was no significant effect on the quality traits; brix, sucrose, and purity percentages (20.92, 14.57 and 69.61%) respectively, while the nitrogen levels affected significantly the yield traits and plant density, which were the highest at the addition of 250 kg N/hectare (102.8, 50.4, 153.3 and 3.79 ton/hectare, respectively). The highest value of plant number per hectare was (80.74 thousand plant/hectare) at a level of 250 kg N/hectare of nitrogen fertilization. These results assure the importance of the nitrogen fertilizer to enhance the plant’s photosynthesis efficiency and dry matter accumulation.
Keyword: Sugar beet, Irrigation methods, Nitrogen fertilizer, Quality traits, Production traits.
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