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The effect of foliar spray of nitrogen, boron and zinc on the growth indicators and the content of the leaves of elements of two olive cultivars (Nebaly mohasan and Dan)

تأثير الرش الورقي بالآزوت و البورون و الزنك في نمو شجرة الزيتون و محتوى الأوراق من العناصر المعدنية في صنفي دان و نبالي محسن

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 Publication date 2012
and research's language is العربية
 Created by Shamra Editor




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This experiment was carried out during 2009 and 2010 seasons in fields cultivated with 10 years of Dan and Nebaly cultivars of olive trees in province of Damascus to study the effect of foliar spray of to one of nitrogen (N), boron (B) and zinc (Z) on the leaf area, shoot length, number of flowers, leaves content of mineral elements, fertilization. These elements were sprayed individually or combined together four times during the growing season as follows: nitrogen (5 g/l), boric acid (2g /l), zinc sulfate (2g/ l), nitrogen + boric acid, nitrogen + zinc sulfate, Boric acid + Zinc sulfate, and nitrogen + boric acid + zinc sulphate) at the same rates in single spray.


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Research summary
أجريت هذه الدراسة خلال موسمي 2009 و2010 في بستان زيتون في منطقة المعضمية بمحافظة ريف دمشق، لدراسة تأثير الرش الورقي بعناصر الآزوت والبورون والزنك على نمو شجرة الزيتون ومحتوى أوراقها من العناصر المعدنية لصنفي الزيتون دان ونبالي محسن. تم رش هذه العناصر منفردة أو مجتمعة أربع مرات خلال موسم النمو. أظهرت النتائج زيادة معنوية في جميع المؤشرات المدروسة مقارنة بالشاهد، حيث كانت أفضل معاملة من حيث مساحة الورقة هي معاملة الآزوت للصنف نبالي محسن، ومعاملة (N+B+Zn) للصنف دان. كما لوحظت زيادة معنوية في طول الطرود وعدد الأزهار والثمار العاقدة في المعاملات المختلفة. أظهرت النتائج أيضًا زيادة معنوية في محتوى الأوراق من العناصر الكبرى N.P.K وعنصري B وZn، خاصة في المعاملات التي شملت الآزوت والزنك. لم تُظهر النتائج فروقًا معنوية في محتوى الأوراق من الفوسفور بين المعاملات والشاهد. توصي الدراسة بضرورة استخدام الرش الورقي بعناصر الآزوت والبورون والزنك لتحسين نمو وإنتاجية أشجار الزيتون.
Critical review
تعتبر هذه الدراسة مهمة جدًا لفهم تأثير الرش الورقي بعناصر الآزوت والبورون والزنك على نمو وإنتاجية أشجار الزيتون. ومع ذلك، هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الممكن توسيع نطاق الدراسة لتشمل أصناف زيتون أخرى لزيادة تعميم النتائج. ثانيًا، لم يتم تناول تأثير الرش الورقي على جودة الزيت المستخرج من الثمار، وهو جانب مهم يجب دراسته. ثالثًا، كان من الأفضل تضمين تحليل اقتصادي لتقييم تكلفة وفائدة استخدام هذه المعاملات السمادية. أخيرًا، يجب أن تكون هناك متابعة طويلة الأمد لدراسة التأثيرات المستدامة لهذه المعاملات على صحة الأشجار وإنتاجيتها.
Questions related to the research
  1. ما هي العناصر التي تم استخدامها في الرش الورقي في الدراسة؟

    تم استخدام عناصر الآزوت والبورون والزنك في الرش الورقي في الدراسة.

  2. ما هي الأصناف التي تمت دراستها في هذه التجربة؟

    تمت دراسة صنفي الزيتون دان ونبالي محسن في هذه التجربة.

  3. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    توصلت الدراسة إلى زيادة معنوية في جميع المؤشرات المدروسة مثل مساحة الورقة، طول الطرود، عدد الأزهار، والثمار العاقدة، بالإضافة إلى محتوى الأوراق من العناصر الكبرى N.P.K وعنصري B وZn.

  4. هل أظهرت الدراسة فروقًا معنوية في محتوى الأوراق من الفوسفور بين المعاملات والشاهد؟

    لم تُظهر الدراسة فروقًا معنوية في محتوى الأوراق من الفوسفور بين المعاملات والشاهد.


References used
Argawala, S. C. and P. N. Shorma, 1981. Development and enzymatic changes during pollen development in boron deficient maize plants, J. plandnutr.3: 329-336
Beg, B. and C. McClaugherty. 2008. Plant Litter. Decomposition Humus Formation,Carbon S equetration ,Second ed .Springer
Bouat, A. 1968. Physiology de Loliver et analyse des feuilly.high density olive orchard magazian, No.8
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