Impact of Irrigation Levels and Fertigation Frequency on Yield, Water and NPK Use Efficiencies of Safflower under New Valley Conditions /
قطاع الدراسات الزراعية / General
تخصص البحث : General
Assiut Journal of Agricultural Sciences / / vol. 46, no. 3 - september 2015
تاريخ تقديم البحث 06/12/2015
تاريخ قبول البحث 30/12/2015
عدد صفحات البحث 15
يوسف خيرى انور( 01226313930 )
Safflower, fertigation, New Valley, NPK, water use efficiency
Two field experiments were conducted at the Research Farm, Agricultural Research Station, El-Kharga, New Valley Governorate, Egypt, during 2011/2012 and 2012/2013 seasons to study the impact of irrigation levels (I1=100%, I2= 80% and I3= 60% of potential evapotranspiration, ETp) and fertigation frequency (F1= 3, F2= 6, F3= 12 and F4= 18 doses) on safflower crop. The experiments were laid out in randomized complete block design in strip-plot arrangement with three replicates. Results showed that the highest mean values of seed yield, oil yield and NPK use efficiency were recorded from drip irrigation at 100% of ETp with number fertigation splitting to 12 equal doses. The increment percentage of seed yield due to I1F3 treatment over fertigation splitting 3 doses under the same irrigation treatment were 62.2% and 61.1%, 42.34% and 41.63% when using I2F4 treatment in both seasons, respectively as compared to 100% of ETp with fertiga-tion splitting 3 equal doses (I1F1). The highest mean values of water use effi-ciency were recorded from drip irrigation at 80% of ETp with fertigation splitting 18 doses in both seasons. So, it is concluded that treated safflower plants with I2F4 to get economical yield and water use efficiency, respectively; therefore it may be saving 20% of irrigation water.
Response of Two Varieties Productivity to Planting Methods and Weed Control under Sohag Governorate Conditions /
قطاع الدراسات الزراعية / General
تخصص البحث : General
Assiut Journal of Agricultural Sciences / / vol. 46, no. 3 - september 2015
تاريخ تقديم البحث 08/12/2015
تاريخ قبول البحث 30/12/2015
عدد صفحات البحث 13
يوسف خيرى انور( 01226313930 )
Broadcast, drill, weed control and biological yield.
Two field experiments were carried out in the Research Farm at Al-Kawthar, Faculty of Agriculture, Sohag University, in two successive seasons of 2010/2011 and 2011/2012 to study the response of Giza 168 and Sids 12 varieties to three planting methods (Afir broadcast, Afir drill and Afir in furrows) and four weed control trials (hand weeding twice at 30 and 45 days after sowing, Granstar 75% DF at rate 8 g/fed. at 30 days after sowing, Topik 15 % WP at rate of 140 g/fed. at 40 days after sowing and Granstar 75% DF at rate 8 g/fed. at 30 days after sowing + Topik 15% WP at rate of 140 g/fed. at 40 days after sowing) on yield and yield components. A randomize complete block design (RCBD) in split-split plot with four replicates was used. Data indicated that the varieties, planting methods and weed control had significantly effect on the all studied traits; plant height (cm), spike length (cm), number of spikes/m2, number of spikelets/spike, 1000-grain weight (g), grain yield (ardab/fed.) and biological yield (ton/fed.) in both seasons. Sids 12 variety produced the highest number of spikes/m2, number of spikelets/spike, 1000-grain weight, grain yield and biologi-cal yield, but Giza 168 surpassed in plant height and spike length. Afir drill method increased significantly number of spikes/m2, number of spikelets/spike, 1000-grain weight, grain yield (ardab/fed.) and biological yield (ton/fed.), as well as Afir broadcast and Afir in furrows methods increased plant height (cm) and Spike length (cm). The application of Granstar 75% DF + Topik 15% WP mix-ture increased spike length (cm), number of spikes/m2, number of spikelets/spike, 1000-grain weight (g), grain yield (ardab/fed.) and biological yield (ton/fed.). In general the highest grain yield (20.02 ardab/fed.) was obtained from the applica-tion of Granstar 75% DF + Topik 15% WP mixture under drill method.
Performance and Stability Analysis of Several Yellow Maize Hybrids /
قطاع الدراسات الزراعية / General
تخصص البحث : General
Assiut Journal of Agricultural Sciences / / vol. 46, no. 3 - september 2015
تاريخ تقديم البحث 08/12/2015
تاريخ قبول البحث 30/12/2015
عدد صفحات البحث 15
يوسف خيرى انور( 01226313930 )
stability, maize, grain yield
Performance and stability of 13 maize single cross hybrids were estimated under five different environments in Egypt during 2013 summer season. A ran-domized complete block design was used at each environment. Mean squares due to environments, Genotypes and G x E interaction were highly significant for grain yield and other agronomic traits. Based on combined data H2 possessed the highest grain yield (5.15 kg/plot) and significantly outyielded the check hybrid H13 (4.59 kg/plot). According to stability analysis the G x E (linear) interaction was not significant and had low portion of the G x E interaction when compared to the environment linear mean of squares for grain yield and the other studied. If the mean yield ( ), regression coefficient value (bi) and the deviation from the regression are considered together, then the most stable hybrid would be H2 and H9. The most stable hybrids according to the ecovalence method were H10, H8, H1, H9. These hybrids were not the best ranked for grain yield, except H9, which possessed the first rank for grain yield with 5.15 kg plote-1 (Plot size is 9.6 m2) and is considered as a promising hybrid for stability.
Control of Genetic Variation in Stem Diameter, Number of Vascular Bundles and their Relationships with Grain Yield under Heat Stress in Bread Wheat /
قطاع الدراسات الزراعية / General
تخصص البحث : General
Assiut Journal of Agricultural Sciences / / vol. 46, no. 3 - september 2015
تاريخ تقديم البحث 08/12/2015
تاريخ قبول البحث 30/12/2015
عدد صفحات البحث 18
يوسف خيرى انور( 01226313930 )
heat stress, vascular bundles, stem diameter in wheat.
The genetic system controlling variability in stem diameter and number of vascular bundles in wheat was investigated in an 8 parent diallel cross grown in favorable environment (normal sowing date) and heat stress environment (late sowing date). For the two stem attributes genes with additive effects were operat-ing with non-allelic gene interaction being involved for number of vascular bun-dles under normal sowing date, heat stress reduced stem diameter by 14.1% on average while the average reduction in vascular bundles amounted to 10.65%. The narrow-sense heritability estimates were reasonably. high and comparable in the two environments being 0.78and 0.62 for stem diameter, 0.78 and 0.73 for number of vascular bundles under favorable and heat stress conditions, respec-tively. The two stem attributes were positively and significantly correlated in both favorable (r = 0.77, p < 0.01) and heat stress environment (r = 0.69, p < 0.01), indicating the considerable proportion of the variation in stem diameter is accounted for by variation number of bundles in the stem. The impact of heat stress was grater on grain yield per spike (38.5% reduction) than on 1000 kernel weight (22.1% reduction). For the two yield components analyzed, the narrow-sense heritability was rather low being 0.47 and 0.40 for grain yield per spike in normal and stress environments. Stem diameter was significantly correlated with both; 1000 kernel weight under favorable (r = 0.59, p < 0.01) and heat stress con-dition (r = 0.59, p < 0.01). Stem diameter was also correlated with grain yield per spike in the two environments (r = 0.47, and 0.42, p < 0.01). Meanwhile, number of vascular bundles was significantly correlated with 1000 kernel weight under favorable conditions only (r = 0.53, p < 0.01) and with grain yield per spike on the two environments (r = 0.47 and r = 42, p < 0.01). Moreover, the positive sig-nificant association between stem diameter and 1000 kernel weight was consis-tently displayed in the 9 F2 segregating populations analyzed. Meanwhile the as-sociation of stem diameter with grain yield per spike was significantly positive in only six of the 9 F2 populations. The results of the present study clearly demon-strate the utility of selecting for stem diameter for improving heat stress tolerance as an easy storable character with reasonable high narrow-sense heritability which will increase storage ability of assimilates in the stem via affecting number of vascular bundles.
The effects of replacing mineral-N fertilization partially by organic or bio-fertilization on growth and fruiting of Seewy date palms were studied during 2012, 2013 and 2014 seasons. The palms are grown in a private orchard at El-Dakhla oasis, New Valley, Egypt, where the texture of soil is sandy loam. Ammonium nitrate, farmyard manure and nitrobien were added as mineral, organic and bio-forms of N, respectively. The experiment was set up in a com-plete randomized block design with nine treatments and three replicates, one palm per each. The obtained results indicated that: - Fertilizing the palms with either two forms (mineral plus organic) or (or-ganic plus bio-form), as well as, three forms (mineral, organic plus bio-form) considerably increased the leaf area and N, P & K contents of leaves compared to using mineral-N source only. Using three forms gave the highest values of these traits. - Using either two form or three forms of nitrogen fertilization increased the residually of N, P and K compared to use mineral-N source only. - The heaviest bunch weight was detected on the palms that fertilized with the three forms, contained the third of them. Moreover, using either two or three forms was accompanied with improving fruit quality in terms of increasing fruit weight, total soluble solids and sugar contents and decreasing the moisture per-centage. So, it is concluded that Seewy date palm production can rely on organic and bio-fertilization as alternatives to mineral-N fertilization or at least rationalize its use in the production of organic palm dates as well as increasing soil fertility, the nutritional status and yield besides reducing environmental pollution that may occurr by excess of chemical fertilizers used.
This study was carried out at the Experimental Orchard, Faculty of Agricul-ture, Assiut University, Egypt, to investigate the response of Manfalouty pome-granate trees for Azotin (bio-fertilizer) and Enciaben (slow release-N fertilizers) during 2013 and 2014 seasons. The experiment was arranged in a complete ran-domized block design with six treatments and three replications, each one tree. The results of this study showed that all studied fertilization treatments sig-nificantly increased the leaf area as well as percentage of N, P and K in leaves compared to use the recommended dose of nitrogen (RDN) as fast mineral nitro-gen source only. No significant differences on these traits due to use slow re-lease-N fertilizer at any dose as well as 60% of RDN as two or three forms. All studied fertilization treatments studied significant increasing the yield/tree and decrease the fruit splitting percentage compared to use (RDN) as fast mineral-N source only. The maximum yield/tree and least fruit splitting percentage were re-corded on the trees that fertilized by three different fertilization source (three forms). Fertilization with the slow release dose, two forms (mineral plus bio) or three forms (mineral plus bio and slow release) significantly improved the fruit quality in terms of increasing the fruit weight, pulp % and total soluble solids % as well as sugar, vitamin C and anthocyanin contents and decreasing the total acidity and tannin content compared to use the RDN as release mineral-N source. Hence, the cost wise evaluation of the application of these N sources is in favour of 60% RDN at either two, three forms or slow release-N. It is evident from the obtained results that such fertilization programs are very important for the production of pomegranate fruits since it improves the fruit quality and packable yield and reduces the production costs and environ-mental pollution.
This study was conducted through three successive seasons 2010/2011, 2011/2012 and 2012/2013 on Flame Seedless grape 12 years old. The grapevines were grown at the vineyard of Plant Pathology Department, Faculty of Agricul-ture, Assiut University. The study was performed to examine the effects of spray-ing garlic and camphor oils at 1.0% and 1.5% each on bud fertility, yield (kg/vine) and berry quality. The grapevine were trained as bilateral cordon leav-ing 48 buds/vine. These natural oils were sprayed twice at full bloom and at the beginning of the veraison stage (when 20% of berries of 50% bunch/vine were softened). The experiment was carried out as split-plot arrangement at one level of randomized complete block design with three replicates, one grapevine each. All treatments of garlic and camphor oils induced significant improvement in bud fertility, yield (kg/vine), and berry weight (g). The inferior taste of garlic oil, we recommend to use camphor oil at 1.0% to improve bud fertility, yield and berry quality of Flame Seedless grape cv.
التنمية الاقتصادية المستدامة لقرى الظهير الصحراوي بمحافظة المنيا /
قطاع الدراسات الزراعية / General
تخصص البحث : General
Assiut Journal of Agricultural Sciences / / vol. 46, no. 3 - september 2015
تاريخ تقديم البحث 09/12/2015
تاريخ قبول البحث 30/12/2015
عدد صفحات البحث 23
يوسف خيرى انور( 01226313930 )
التنمية الاقتصادية , المنيا , التنمية المستدامة
تواجه التنمية المستدامة في مصر أنواع من التحديات والتي تتمثل في الزيادة السكانية دون توزيع مخطط ومدروس وموجة نحو الاستفادة من الطاقات البشرية الكامنة والمتنوعة، و التعدي علي الأراضي الزراعية والبناء عليها وأثر ذلك علي قلة المساحه وانخفاض الإنتاج وارتفاع الاستهلاك مما أدى إلي زيادة فى الفجوة الغذائية وارتفاع في الأسعار ووجود فجوة في المتاح من الموارد المائية اللازمة للتوسعات التنموية وبالإضافة إلي بعض الآثار السلبية للتغيرات المناخية، والتي أثرت جميعها علي الإنتاج الزراعي. وتستهدف التنمية المستدامة توجيه الجهود القصوى لاستخدام عناصر الإنتاج، الأرض, العمل, رأس المال, والإدارة أو التنظيم المتاحة والممكنة بشكل أمثل مما يؤدي إلي زيادة في قيمة الدخل القومي الأمر الذي يؤدي إلي تحسين في مستوى المعيشة مع مراعاة عدم المساس بمقدرات الأجيال القادمة من الموارد والمحافظة عليها من الاستنفاذ وكذلك المحافظة علي التوازن البيئي. ونظرا لقلة الرقعة الزراعية في مصر والزيادة السكانية العالية سنويا اتجهت الدولة إلي الاستفادة من الظهير الصحراوي لمحافظات مصر المختلفة في شكل مشروع قومي كبير وذلك بهدف التوسع الأفقي في الصحراء المصرية الواسعة وذلك أملا في وضع إطار قومي مخطط ليواجه الزيادة السكانية بشكل متوازن وتعمير الصحراء وهذا يتطلب الكثير من الوقت والجهد والموارد والدقة في اختيار المشروعات الهامة التي تفيد الشباب وكذلك أن تكون هناك إدارة ناجحة ورؤية مستقبلية وذلك لتحقيق الهدف الذى يبني علي أساسه هذه المشروعات مما يؤدي إلى انتعاش الاقتصاد المصري وكذلك القضاء علي مشكلة البطالة والتضخم.
The success of mass micropropagation of fruit trees may be reached by us-ing plant tissues culture techniques, since this has shown efficient results on seedling production with high quality and health. Preliminary experiments were carried out to define the constitution of culture medium that provides better re-sults, in multiplication as well as in vitro rooting and acclimation methods of blackberry cv. ’Triple Crown’ (Rubus fruticosus L.). The best survival percentage was 90% when both shoot tips and stem segments were treated with 40% sodium hypochlorite for 30 minutes. Murashige and Skoog (MS) medium supplemented with 2.0 mg BA+0.5 mg 2ip/l was the most efficient treatment on in vitro multi-plication of blackberry inducing a higher number of shoots was 7.78 shoot/ ex-plant. Also the combinations of MS medium with NAA and BA improved the multiplication of blackberry in vitro, the highest value was 4.42 shoot/explant that was observed in the presence of 1.0 mg BA combined with 0.1 mg NAA /l. The best rooting condition for explants of the blackberry was reached by keeping the explants in full strength MS medium enriched with 2.0 mg IBA+0.5 mg NAA/l which produced long roots with sub roots which were thick and involved in medium.
جميع البيانات التي يتم تسجيلها على النظام هي ملك للجهة صاحبة هذه البيانات
لا يتم الاطلاع على هذه البيانات من قبل مهندسي المركز إلا للضرورة القصوى ولغرض الدعم الفني وبالاتفاق مع الجهة صاحبة البيانات شفوياً أو كتابياً
لا يتم إعطاء أي بيان من بيانات النظام لأي فرد او جهة فرعية تنتمي للجهة صاحبة البيانات او لأي جهة أخرى إلا بموافقة كتابية من الجهة صاحبة البيانات
يمكن استخدام البيانات المسجلة على النظام بهدف عمل إحصائيات يستفاد منها فى قياس اداء النظام وكفاءة استخدامه من قبل مستخدميه
يتم تأمين جميع البيانات الخاصة بالنظام من خلال تأمين الحاسب الخادم الذي يستضيف البيانات ومن خلال تأمين انتقال البيانات بين جهاز المستخدم والحاسب الخادم وكذلك تأمين واجهة النظام التي يستخدمها المستخدم
كل مستخدم للنظام مسئول مسئولية كاملة عن كلمة المرور الخاصة به وعليه اتخاذ كافة الاحتياطات الممكنة حتى لا يستطيع أى شخص آخر الحصول عليها
تسجيل دخول 
Download Paper
