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Effect of Foliar Spray With Urea and Iron on Vegetative Growth and Mineral Contente of Peach Transplants cv. Dixired

تأثير الرش الورقي باليوريا و الحديد في النمو الخضري و المحتوى المعدني لشتلات الدراق صنف دكسيرد

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 Publication date 2011
and research's language is العربية
 Created by Shamra Editor




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Peach (Prunus persica Batsch) transplants cv. Dixired were sprayed three times a season with three levels of urea (45% N) (2.5, 5.0 and 7.5 gm/ L), and two levels of iron (10 and 20 mg Fe/ L) using chelated iron Fe-EDDHA (6%iron), each alone or in combination. Meanwhile the control transplants sprayed with distilled water during 2006 and 2007 growing seasons, twenty days intervals between each spray and another, the first spray is done at the first week of May in both seasons. Results indicated that all spray treatments with urea and iron each alone or with each other significantly increased leaves N, K, Fe, chlorophyll and carbohydrate concentration, transplant leaves area, shoots number, transplants height, main stem diameter and vegetative and root dry weight. While leaves P concentration, significantly decreased with the foliar spray with two concentrations of iron alone, or in combination with all concentrations of urea. The best treatment was 7.5 gm urea/ L + 20 mg Fe/ L., which gave the highest means of all studied parameters, except leaves P concentration, which were the highest mean of it was in the control treatment at both seasons.


Artificial intelligence review:
Research summary
تتناول الدراسة تأثير رش أوراق شتلات الخوخ (Prunus persica Batsch) صنف Dixired بثلاث مستويات من اليوريا (45% نيتروجين) (2.5، 5.0، و7.5 جم/لتر) ومستويين من الحديد (10 و20 ملجم Fe/لتر) باستخدام الحديد المخلبي Fe-EDDHA (6% حديد)، سواء بشكل منفرد أو مشترك. تم رش الشتلات ثلاث مرات في الموسم بفاصل زمني عشرين يومًا بين كل رش وآخر، وكانت الرشة الأولى في الأسبوع الأول من شهر مايو في موسمي النمو 2006 و2007. أظهرت النتائج أن جميع المعاملات باليوريا والحديد، سواء منفردة أو مشتركة، زادت بشكل كبير من تركيز النيتروجين والبوتاسيوم والحديد والكلوروفيل والكربوهيدرات في الأوراق، كما زادت مساحة الأوراق وعدد الفروع وارتفاع الشتلات وقطر الساق الرئيسي والوزن الجاف للنباتات والجذور. في المقابل، انخفض تركيز الفوسفور في الأوراق بشكل ملحوظ مع رش الحديد بمستوييه، سواء منفردًا أو مشتركًا مع جميع مستويات اليوريا. كانت أفضل معاملة هي 7.5 جم يوريا/لتر + 20 ملجم Fe/لتر، حيث أعطت أعلى متوسطات لجميع المعايير المدروسة، باستثناء تركيز الفوسفور في الأوراق الذي كان أعلى في المعاملة الضابطة في كلا الموسمين.
Critical review
دراسة نقدية: تعتبر هذه الدراسة ذات أهمية كبيرة لفهم تأثيرات رش اليوريا والحديد على نمو شتلات الخوخ، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، لم تتناول الدراسة تأثيرات طويلة الأمد لهذه المعاملات على الإنتاجية والجودة الفعلية للثمار، وهو ما يمكن أن يكون له تأثير كبير على التطبيق العملي لهذه النتائج. ثانيًا، لم يتم التطرق إلى تأثيرات هذه المعاملات على البيئة والتربة، وهو جانب مهم يجب مراعاته عند استخدام الأسمدة الكيميائية. أخيرًا، كان من الممكن أن تكون الدراسة أكثر شمولية إذا تضمنت تحليلات إضافية مثل تأثير المعاملات على مقاومة الأمراض والآفات.
Questions related to the research
  1. ما هي المستويات المختلفة لليوريا المستخدمة في الدراسة؟

    تم استخدام ثلاث مستويات من اليوريا: 2.5 جم/لتر، 5.0 جم/لتر، و7.5 جم/لتر.

  2. ما هو تأثير رش الحديد على تركيز الفوسفور في الأوراق؟

    انخفض تركيز الفوسفور في الأوراق بشكل ملحوظ مع رش الحديد بمستوييه، سواء منفردًا أو مشتركًا مع جميع مستويات اليوريا.

  3. ما هي أفضل معاملة من حيث زيادة المعايير المدروسة؟

    أفضل معاملة كانت 7.5 جم يوريا/لتر + 20 ملجم Fe/لتر، حيث أعطت أعلى متوسطات لجميع المعايير المدروسة باستثناء تركيز الفوسفور في الأوراق.

  4. ما هي الفترات الزمنية بين كل رش وآخر في الدراسة؟

    كانت الفترات الزمنية بين كل رش وآخر عشرين يومًا.


References used
Al-Bamarny, S. F. A.; M. A. Salman and Z. R. Ibrahim. (2010). Effect of some chemical compounds on some characteristics of shoot and fruit of peach (Prunus persica L.) cv. Early Coronet. Meso. J. Agric. 38 (Supplement 1):35– 44
Arnon, D. I. (1949). Copper enzymes isolated chloroplasts polyphenol oxidase in Beta vulgaris . Plant Physiol. 24 : 1-15
Awad, S. M. and A. R. Atawia. (1995). Effect of foliar sprays with some micronutrient on 'Le-Conte' pear trees. I: Tree growth and leaf mineral content . Annals Agric. Sci. 40 (1): 359-367
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The experiment was carried out during spring season 2016 to study the effect of foliar spraying treatment with Tecamin Flower 2.5 ml/L in comparison with distilled water, on growth of three hybrids of tomatoes at two different levels of irrigation (100 and 50 % of field capacity). Three sprays were conducted started from flowering with two weeks’ interval. The results showed that ‘Finenss’ hybrid had significant differences in plant height, branches per plant and leaves number per plant. ‘Hadeer’ hybrid had superiority in dry matter ratio and content of chlorophyll in leaves. Reducing the level of irrigation resulted in a significant decrease in plant height, total branches number, versus an increase in the leaves number per plant, total leaves area and the percentage of dry matter. The results showed that the treatment with Tecamin flower led to a significant increase in all indicators studied. The interaction treatments shoed that Hadeer hybrid irrigated in level 50 % and spraying of nutrient solution (Tecamin flower) had a significant increase in dry matter ratio and chlorophyll content in leaves. While the hybrid Finenss which irrigated in level 100 % with nutrient solution (Tecamin flower) had a significant increase in leaves number per plant and total leaves area.
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استخدم التسميد الورقي بمستخلص الأعشاب البحرية والخميرة والحديد المخلب بالأحماض الأمينية لتحسين بعض الصفات الفيزيولوجية والإنتاجية لشجرة الدراق صنف red heaven والتخفيف من ظاهرتي إزدواجية ثمار الدراق وإصفرار نقص الحديد.
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