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العنوان
IMPROVING FRUIT SET AND YIELD OF KHADRAWI DATE PALM CULTIVAR /
المؤلف
MOUSTAFA,ALI RABIE ABD EL-AZIEM.
هيئة الاعداد
باحث / ALI RABIE ABD EL-AZIEM MOUSTAFA
مشرف / Abeer Tahsin Abd El-Wahab
مشرف / Ahmed Abd El-Fattah El-Gazzar
مشرف / Ahmed Abd El-Hamid Awad
تاريخ النشر
2018
عدد الصفحات
125p.:
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
البساتين
تاريخ الإجازة
1/1/2018
مكان الإجازة
جامعة عين شمس - كلية الزراعة - الفاكهة
الفهرس
Only 14 pages are availabe for public view

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Abstract

Two independent experiments were carried out in this study during 2015 and 2016 seasons on Khadrawi date palm cultivar. The first experiment: dealt with effect of spraying spathes with moringa extract at 3%, garlic extract at 3% or ascorbic acid at 300 ppm at three times (3 hours before pollination then 4 and 8 weeks after pollination) on fruit set, yield and fruit quality.
Spraying date palm spathes with moringa extract or garlic extract recorded the highest initial fruit set in the first and second seasons, respectively. As well as, moringa extract gave the highest fruit retention and yield in both seasons. In addition, all treatments improved fruit physical characteristics i.e. fruit weight, flesh weight, fruit volume and fruit length compared to the control treatment (water spray) in the two studied seasons. Also, moringa extract or ascorbic acid increased TSS%, total sugars % and reducing sugars % in both seasons compared to the control. Meanwhile, the lowest fibers % was obtained by garlic extract in the two seasons. Morever, all treatments had no significant effect on total acidity % and tannins content in both seasons.
The second experiment was carried out to study the effect of strand thinning (removing 15% and 30 of the total number of strands from the bunch center after 8 weeks from pollination) on yield and fruit quality. Thinning treatment by removing 15% of the total number of strands after 8 weeks from pollination gave the highest bunch weight and yield per palm compared to thinning 30% in the two seasons. Also, removing 30%
and 15% of the total number of strands improved fruit physical properties i.e. fruit weight, flesh weight, fruit length and fruit diameter than control in both seasons. Meanwhile, thinning by removing 30% of the total number of strands gave the highest fruit flesh % and fruit volume compared to other treatments in the two seasons. On the other hand, both thinning treatments improved some chemical properties such as TSS %, total sugar % and reducing sugar % than control (without thinning). However, all thinning treatments had no significant effect on non reducing sugar %, total acidity % and tannins content in the two studied seasons.
Key words: Date palm, Khadrawi, Fruit set, Yield, Fruit quality, Moringa extract, Garlic extract, Ascorbic acid, Strands thinning.