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Effect of Summer Pruning on Fruit Calcium Concentration and Physiological Disorders in Apple Cultivers Starking Delicious and Golden Delicious

تأثير التقليم الصيفي في تركيز الكالسيوم و في الإصابة بالأمراض الفيزيولوجية في ثمار صنفي التفاح Golden Delicious و Starking Delicious

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 Publication date 2002
and research's language is العربية
 Created by Shamra Editor




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In this research, we have studied the effects of some summer pruning at the mid June and Juli, in addition to the common periodical winter pruning during February. Both studies were done to evaluate calcium concentration of fruits, quality and yield the apearance of physiological disorders during the storage and fruits. Experiments were conducted on 8 year apple trees of Starking Delicious and Golden Delicious, which are sensiitve to laek of calcium and as a result caused bitter-pit as an important physiological disorder on apple fruits. Summer pruning of apple trees at mid june increases their content of calcium and their colors, also decreases physiological disorder, weight loss during storage, without affecting the annual yield of trees. Accorrding to the attained results, we recommend the farmers of apple trees to follow summer pruning, because of its benefits on improving the condition of trees and achieving the balance between vegetative and generative growth, and reduced the alternate Summer pruning. Also improve the quality of fruits, their storability and their resistance for some physiological disorders during storage.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة تأثير التقليم الصيفي على تركيز الكالسيوم في ثمار التفاح واضطراباتها الفسيولوجية في صنفي Starking Delicious و Golden Delicious. أجريت التجارب على أشجار تفاح عمرها 8 سنوات، حيث تم تطبيق التقليم الصيفي في منتصف يونيو ويوليو بالإضافة إلى التقليم الشتوي الدوري في فبراير. أظهرت النتائج أن التقليم الصيفي يزيد من محتوى الكالسيوم في الثمار ويحسن لونها، كما يقلل من الاضطرابات الفسيولوجية وفقدان الوزن أثناء التخزين، دون التأثير على الإنتاج السنوي للأشجار. توصي الدراسة المزارعين باتباع التقليم الصيفي لتحسين حالة الأشجار وتحقيق التوازن بين النمو الخضري والتكاثري، وتحسين جودة الثمار وقدرتها على التخزين ومقاومتها لبعض الاضطرابات الفسيولوجية أثناء التخزين.
Critical review
دراسة نقدية: تقدم هذه الدراسة رؤية شاملة حول فوائد التقليم الصيفي على أشجار التفاح، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، لم تتناول الدراسة بشكل كافٍ تأثيرات التقليم الصيفي على المدى الطويل وعلى مختلف أنواع التربة والمناخات. ثانياً، كان من الأفضل تضمين تحليل اقتصادي لتكلفة التقليم الصيفي مقارنة بالعوائد المتوقعة. أخيراً، يمكن تعزيز الدراسة بمزيد من البيانات التجريبية من مزارع مختلفة لضمان تعميم النتائج.
Questions related to the research
  1. ما هو الهدف الرئيسي من الدراسة؟

    الهدف الرئيسي هو دراسة تأثير التقليم الصيفي على تركيز الكالسيوم في ثمار التفاح والاضطرابات الفسيولوجية في صنفي Starking Delicious و Golden Delicious.

  2. ما هي الفوائد التي وجدتها الدراسة للتقليم الصيفي؟

    وجدت الدراسة أن التقليم الصيفي يزيد من محتوى الكالسيوم في الثمار، يحسن لونها، يقلل من الاضطرابات الفسيولوجية وفقدان الوزن أثناء التخزين، دون التأثير على الإنتاج السنوي للأشجار.

  3. ما هي التوصيات التي قدمتها الدراسة للمزارعين؟

    توصي الدراسة المزارعين باتباع التقليم الصيفي لتحسين حالة الأشجار وتحقيق التوازن بين النمو الخضري والتكاثري، وتحسين جودة الثمار وقدرتها على التخزين ومقاومتها لبعض الاضطرابات الفسيولوجية أثناء التخزين.

  4. هل تناولت الدراسة تأثيرات التقليم الصيفي على المدى الطويل؟

    لا، لم تتناول الدراسة بشكل كافٍ تأثيرات التقليم الصيفي على المدى الطويل وعلى مختلف أنواع التربة والمناخات.


References used
Cooks, G. W. 1971. The effect of calcium and other minerals on incidence of bitter pit in cox orange apple. N.Z.J. Agric. Res., 5: 202-309
Dallacqua, G. 1994. The contol of bitter pit, mineral deficiencies, apple trees. Terra Trentina, 40(1) p. 34-38
Dodds, K. A., L. J. Penrose, H. Nicol, and C. C. Bower 1994. The importance of pest and disease damage as a cause of commercial downgrading of apple fruit. Australian-Journal-of-Experimental-Agriculture. 34(3)p. 431-434
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