Document Details
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Document Type |
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Thesis |
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Document Title |
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INTERCROPPING OF AL-HASSAWI ALFALFA ON DIFFERENT SUGAR BEET CULTIVARS UNDER THE EFFECT OF NITROGEN FERTILIZER RATES. تحميل البرسيم الحساوي على أصناف مختلفة من بنجر السكر تحت تأثير معدلات من السماد النيتروجيني |
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Subject |
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Faculty of Meteorology, Environment and Arid Land Agriculture |
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Document Language |
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Arabic |
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Abstract |
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This study was carried out during 2016/2017 and 2017/2018 seasons in the Agriculture Research Station belonged to King Abdulaziz University at Hada AL-Sham, Jeddah, Saudi Arabia. This investigation aimed to study the performance of three sugar beet cultivars and AL-Hassawi alfalfa cultivar under three nitrogen fertilizer rates (100, 200, 300 Kg N/ha), three intercropping systems (1row of sugar beet : 2 lines of alfalfa, (1S : 2F), 1 row of sugar beet : 3 lines of alfalfa, (1S : 3F).
The obtained results showed that the maximum sugar beet dry root yield were 24.66 t/ha and 34.97 t/ha under 300 Kg N /ha in the first and second seasons, respectively, while the lowest sugar beet dry root yields /ha were 17.88 t/ha and 24.23 t/ha under 100 Kg N /ha in both seasons, respectively .The highest sucrose yields /ha were 4.28 t/ha and 6.39 t/ha under 300 Kg N/ha in the 1st and 2nd seasons, respectively. Significant differences were detected between the two intercropping system (1S: 2F or 1S : 3F) in root yields /ha . Dry root /ha ranged from 19.55 t/ha – 16.89 t/ha in the first season and from 37.13 t/ha – 35.11 t/ha in the second season. Sucrose yields were 3.3 t/ha and 6.43 t/ha under (1S: 3F) system and 2.57 t/ha and 5.91 t/ha under sugar beet sole in the first and second seasons, respectively. Farida sugar beet cultivar significantly dominated over Dita and Heros in root yield and sucrose yield /ha, while Dita cv dominated over the other two cvs in sucrose content (%) . Farida cv produced 22.69 t/ha and 37.94 t/ha dry root and 4.15 t/ha and 6.9 t/ha sucrose yield /ha in the first and second seasons, respectively. The highest dry root and sucrose yields /ha were produced from sugar beet sole fertilized with 300 Kg N /ha.As for total dry forage yield of AL-Hassawi alfalfa, the intercropping system (1S : 3F) under 300 Kg N /ha produced 38.41 t/ha and 39.45 t/ha dry forage yield in the first and second seasons, respectively and dominated over the other treatments. Also, Farida cv fertilized with 300 Kg N /ha produced the highest dry forage yield /ha under the interaction between nitrogen fertilizer rates and cultivars. Under the three factors interaction, the highest treatments for sugar beet dry root yields /ha was Farida cv fertilized with 300 Kg N /ha under the 1S : 3F intercropping system. It produced in the first season (5.74 t/ha) and in the second season (8.44 t/ha) . The highest AL-Hassawi alfalfa dry forage yield /ha were produced under the 300 Kg N /ha + (1S : 3F) system + Farida cv with yields of 43.92 t/ha and 41.85 t/ha in the two seasons, respectively. Land use efficiency significantly increased under the intercropping systems compared with the sole plantation of sugar beet and ranged from 3.63 – 2.40 in the first season and 3.63 – 1.66 in the second season. Organic matter (%) and N(%) of the soil significantly increased under the intercropping systems compared to the sole plantation, organic matter (%) was 0.66 % under (1S : 3F) compared to 0.60 % under sole plantation and N (%) was 0.05 % under 0.03 % under the sole plantation . |
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Supervisor |
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Dr. Fathi Saad Al Nakhlawi |
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Thesis Type |
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Doctorate Thesis |
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Publishing Year |
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1440 AH
2019 AD |
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Added Date |
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Tuesday, April 16, 2019 |
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Researchers
| غسان حيدر ادريس | Idris, Ghassan Haider | Researcher | Doctorate | |
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