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Improvement of seedlings production techniques of Ceratonia siliqua L. in the nursery and investigating the influence of improvement done on seedlings survival ratio in out planting

تحسين تقنيات انتاج غراس الخرنوب Ceratonia siliqua L. في المشتل و تأثيرها على نسبة البقاء في الأرض الدائمة

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 Publication date 2013
and research's language is العربية
 Created by Shamra Editor




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The aim of this study was to determine the best size and shape of containers to produce higher quality seedlings, and determine which treatments (moving the seedlings to other beds, or transfer to bigger containers, or pruning the shoot and root system of Ceratonia siliqua seedlings in the nursery) are the best for growth and stabilization in out planting. The study showed that the control seedlings D1 which were growing in traditional plastic containers (1 liter) gave low survival rate which did not exceed 20%, and this was due to numerous reasons mainly roots deformation. Seedlings D8, the containers(2 liters) improved the morphological characteristics of root and shoot system and reduced the roots deformation, which led to higher survival rate reached more than 82%. While the deep containers and the air pruning improved the structure and spread the root system of seedlings D9 and limited the roots deformation, which led to higher survival ratio reached more than 95%. Moving the seedlings to other beds in the nursery improved the survival rate in out planting, which amounted ,in D2, to more than 95% and in D3 over than 67%. Also, the study confirmed that cutting the developing top of shoot system and leaving the seedlings in the beds until their planting date D4 did not give a significant effect compared to D5 in which the developing top of their shoot system was cut and was transferred to bags of (12 liters) with pruning the root system, and the survival rate was more than 72% in D4, and over 62% in D5. Regarding to survival rate under the influence of transport operations to larger bags, the D7 which was transferred to bags of 3 liters capacity surpassed in significant differences and was 77.5% compared to D5 and D6 which was transferred to 12 liters bags, where the survival rate in which was 62.5%.


Artificial intelligence review:
Research summary
تهدف هذه الدراسة إلى تحسين تقنيات إنتاج غراس الخرنوب (Ceratonia Siliqua L) في المشتل وتحديد تأثير هذه التحسينات على نسبة البقاء في الأرض الدائمة. تم اختبار عدة معالجات مثل نقل الغراس إلى مراقد أخرى، أو نقلها إلى أوعية أكبر حجماً، أو تقليم المجموعين الخضري والجذري. أظهرت النتائج أن الغراس المزروعة في أوعية تقليدية بسعة 1 لتر أعطت نسبة بقاء منخفضة لا تتجاوز 20%، بينما الغراس المزروعة في أوعية بسعة 2 لتر أو أوعية عميقة مع تقليم هوائي للجذور أظهرت نسبة بقاء مرتفعة تصل إلى 95%. كما بينت الدراسة أن نقل الغراس إلى مراقد أخرى في المشتل أو نقلها إلى أوعية أكبر حجماً حسن من نسبة البقاء في الأرض الدائمة. تم استخدام تصميم عشوائي كامل لتحليل البيانات، وأظهرت النتائج أن تحسين نوعية الغراس وتقنيات الزراعة يمكن أن يزيد من نسبة النجاح في مشاريع التشجير.
Critical review
دراسة نقدية: الدراسة قدمت نتائج مهمة حول تحسين تقنيات إنتاج غراس الخرنوب وتأثيرها على نسبة البقاء في الأرض الدائمة. ومع ذلك، يمكن توجيه بعض النقد البناء لتحسين البحث في المستقبل. أولاً، كان من الأفضل تضمين تحليل اقتصادي لتكاليف كل تقنية مقارنة بالفوائد المتحققة منها. ثانياً، لم يتم تناول تأثير العوامل البيئية المختلفة مثل التربة والمناخ بشكل كافٍ، مما قد يؤثر على تعميم النتائج. ثالثاً، كان من الممكن توسيع نطاق الدراسة لتشمل أنواع نباتية أخرى للحصول على صورة أشمل حول فعالية التقنيات المستخدمة. وأخيراً، كان من المفيد تقديم توصيات أكثر تحديداً حول كيفية تطبيق النتائج في مشاريع التشجير الفعلية.
Questions related to the research
  1. ما هي الأوعية التي أعطت أفضل نسبة بقاء لغراس الخرنوب؟

    الأوعية العميقة مع تقليم هوائي للجذور أعطت أفضل نسبة بقاء بلغت أكثر من 95%.

  2. ما هي المعالجة التي لم تعط تأثيراً معنوياً على نسبة البقاء؟

    قص القمة النامية للمجموع الخضري وترك الغراس في مرقدها حتى موعد زراعتها لم يعط تأثيراً معنوياً مقارنة بالمعالجات الأخرى.

  3. ما هو تأثير نقل الغراس إلى أوعية أكبر حجماً على نسبة البقاء؟

    نقل الغراس إلى أوعية أكبر حجماً (3 لتر) أدى إلى تحسين نسبة البقاء بشكل ملحوظ مقارنة بالأوعية التقليدية بسعة 1 لتر.

  4. ما هي التوصيات التي قدمتها الدراسة لتحسين نسبة بقاء غراس الخرنوب؟

    الدراسة أوصت باستخدام أوعية أكبر حجماً، وضع شرائح من النايلون تحت الأوعية لمنع خروج الجذور، وتحريك الغراس من مراقدها في أوقات مختلفة، واستخدام تقنيات التقليم الهوائي للجذور.


References used
Balisky, A.C, Salonius. P., Walli, C. and Brinkman, D. Seedling roots of forest floor: misplaced and neglected aspects of British Columbia's reforestation effort? Forestry Chronicle. 71,1995, 59-65
Burdett AN. Physiological processes in plantation establishment and the development of specifications for forest planting stock. Canadian Journal of Forest Research. 20, 1990, 415-427
Chirino, E., Vilagrosa, A., Cortina, J., Valdecantos, A., Fuentes, D., Trubat, R., and Vallejo, V. R. Ecological restoration in degraded drylands: The need to improve the seedling quality and site conditions in the field. Forest Ecology and Management .ISBN: 978-1-60692-504-1. 2008, 84- 158
Franclet, A. La, motte de culture Melfert Informations forets, 165. (1), 1981, 1-15
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