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Assiut Journal of Agricultural Sciences
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(2016). Response of Seewy Date Palm to GA3 and CPPU Spraying. Assiut Journal of Agricultural Sciences, 47(5), 125-137. doi: 10.21608/ajas.2016.2060
. "Response of Seewy Date Palm to GA3 and CPPU Spraying". Assiut Journal of Agricultural Sciences, 47, 5, 2016, 125-137. doi: 10.21608/ajas.2016.2060
(2016). 'Response of Seewy Date Palm to GA3 and CPPU Spraying', Assiut Journal of Agricultural Sciences, 47(5), pp. 125-137. doi: 10.21608/ajas.2016.2060
Response of Seewy Date Palm to GA3 and CPPU Spraying. Assiut Journal of Agricultural Sciences, 2016; 47(5): 125-137. doi: 10.21608/ajas.2016.2060

Response of Seewy Date Palm to GA3 and CPPU Spraying

Article 8, Volume 47, Issue 5, October 2016, Page 125-137  XML PDF (359.75 K)
Document Type: Original Article
DOI: 10.21608/ajas.2016.2060
Abstract
The effects of GA3 and CPPU on fruiting of Seewy date palm grown at the Experimental Orchard, Faculty of Agriculture, Assiut University, Egypt were investigated during 2013, 2014 and 2015 seasons.
All treatments were sprayed after two or eight weeks of pollination. The experiment was set up in a complete randomized block design with five replications of one bunch each.
The obtained results could be summarized as follow:
-         Fruit set and fruit retention percentage were significantly decreased due to spray GA3 at 50 ppm after two weeks of pollination followed by GA3 or CPPU after eight weeks of pollination compared to unsprayed one (control).
-         Spraying the bunch with GA3 twice, once at 50 ppm after two weeks of pollination followed once GA3 at 75 ppm plus CPPU at 7.5 or 15 ppm after eight weeks of pollination gave the highest fruit weight, flesh percentage and dimention of fruits compared to unsprayed ones.
-         Spraying GA3 and CPPU significantly improved the chemical fruit properties in terms of the total soluble solids and sugar contents and significantly decreased the total acidity and total soluble tannins percentages compared to unsprayed ones.

So, it concluded that spray GA3 at 50 ppm after two weeks of pollination plus either GA3 at 75 ppm and CPPU at 7.5 ppm or GA3 at 75 ppm and CPPU at 15 ppm to obtain the high yield with good quality of Seewy dates. GA3 reduce the fruit retention and consequently increase the fruit weight and size induce increased the yield. CPPU induced an increase in fruit weight and size then get high yield of Seewy dates. Thus, spraying the bunches of Seewy date palm with GA3 and CPPU had get the heaviest yield with improvement the physical and tested chemical fruit properties.
Keywords
dactylifera; Gebbberelic acid; Sitofex; Yield; Fruit quality
Main Subjects
Horticulture (Vegetable, Pomology and Ornamentals)
Article Title [العربیة]
استجابة نخیل البلح السیوی للرش بحمض الجبریلیک والسیتوفیکس
Abstract [العربیة]
أجریت هذه الدراسة فی مزرعة کلیة الزراعة- جامعة أسیوط – مصر ، علی أشجار نخیل البلح السیوی  خلال ثلاثة مواسم  2013 ، 2014، 2015 بهدف دراسة تأثیر رش حمض الجبریلبک والسیتوفیکس علی المحصول وخصائص الثمار وقد تم رش حمض الجبریلیک والسیتوفیکس مرتین الاولى بعد التلقیح باسبوعین والاخرى بعد التلقیح بثمانیة اسابیع.
وتوضح  النتائج الاتى:
-   أدی رش السوباطات بحمض الجبریلیک بمعدل 50 ppm بعد أسبوعین من التلقیح نقصا جوهریا فى نسبة العقد الأولی والنهائی للثمار. بما یماثل عملیات خف الثمار.
-   أدى رش السوباطات بـ GA3 بترکیز50ppm  بعد اسبوعین من التلقیح ثم الرش مره اخرى بترکیز 75ppm اضافه الى CPPU بترکیز 7.5 او 15 ppm بعد ثمانیة اسابیع من التلقیح الى تحسین خصائص الثمار الطبیعیه من حیث زیاده وزن وحجم الثمار ونسبة لب الثمار.
-    أدى الرش بحمض الجبریلیک والسیتوفیکس الى تحسین  خصائص الثمار الکیمیائیه حیث تزداد نسبة المواد الصلبه الذائبه والسکریات فى الثمار بینما تقل النسبه المئویه للحموضه والتانینات بالثمار. من نتائج هذه الدراسه نوصى باهمیة رش حمض الجبریلیک بترکیز 50 ppm بعد التلقیح باسبوعین ثم مره اخرى بحمض الجبریلیک  بترکیز 75 ppm والسیتوفیکس بترکیز 7.5 او 15 ppm بعد التلقیح بـثمانیة اسابیع حیث تؤدی هذه المعاملة إلی زیادة وزن وحجم الثمار وبالتالی زیادة المحصول وتحسین خصائص الثمار الطبیعیة والکیمیائیة.
Keywords [العربیة]
داکتیلیفیرا، حمض الجبریلیک، سیتوفیکس، العائد، جودة الفاکهة-نخیل البلح
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