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Register a new userتأثير المكافحة الكيميائية ومعدلات بذار القمح والتسميد النتروجيني في القدرة التنافسية للاعشاب وغلة المحصول بوادي الفرات الأدنى
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جامعة الفرات أطروحة دكتوراه
Publication date
2010
fields
Agricultural Engineering
and research's language is
العربية
Created by
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تأثير المكافحة الكيميائية ومعدلات بذار القمح والتسميد النتروجيني في القدرة التنافسية للاعشاب وغلة المحصول بوادي الفرات الأدنى
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طباش سمير 1990 الأعشاب الضارة ومكافحتها - مديرية الكتب والمطبوعات جامعة تشرين
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The provision of adequate drainage and the accompanying problem of
accumulation of salt in soil have plagued irrigated agriculture for
centuries. Soil salinity is one of the major problems in arid and semi-arid
zones. In Euphrates valley the high
groundwater level and its high
evaporation rate caused a serious salinity problem. This study was aimed
to allocate the dangerous areas in terms of high water level resulted from
the recent and expected activities. Drainage wells will be drilled at these
areas in order to lower the groundwater level and prevent further soil
salinity.
This research studies the competitiveness ability of Syrian exports and the major factors empowering this ability, the availability of these factors considers one of the most important elements to ensure maximum productivity and best use of resources
, and thus reach higher rates of economic growth, taking into account the importance of analyzing the excellence elements which Syrian Exportation Sector owns in light of all restrictive factors facing
competitiveness ability including production costs quality and government role, this research identified a group of remarks and conclusions indicating that although Syria owns market power elements but they are not invested in a sufficient way.
Therefore, the Syrian market is weak with respect to the competitiveness ability, in addition to a clear weakness of the competitiveness of the Syrian exportations, in particular the industrial exportations. This results in the need to implement a group of recommendations or solutions in order to overcome this dilemma. The forefront of these recommendations is the need to support the Syrian exportation’s sectors that have the best competitiveness ability to compete in a clear and transparent
framework of strategy for external trade.
The aim of this research was to analyze the current structure of Syrian apple exports,
and highlighting the relative advantage of this crop and its competitive position on
the markets of the key importing countries of Syrian apples. The analysis wa
s based
on secondary data published by FAO during 2000-2013. Descriptive statistical
analyses were used, in addition to estimates of time trend equations to identify the
evolution in quantity, value and price of both Syrian apple exports and imports,
and to determine certain indicators of export competitiveness, besides to applicate
the linear programming model for optimal distribution of Syrian apple exports.
The objective of this research was to identify the potentials of Syrian olive
oil exports through studying the current situation of the Syrian olive oil in the
world and local markets and the most important factors effecting its
competitiveness ca
pabilities in the world markets. This study was built on
analyzing the primary data obtained from the delivered questionnaires,
searches lists and personal interviews with the exporting and manufacturing
companies (30 companies) of Syrian olive oil. Some of the economic indicators
were calculated to determine the competiveness status in the import markets.
Results indicated that the Syrian olive oil exports had suffered from low
competitiveness indicators of production which was 0.12 in the most important
import markets for the studied period. In addition, the increased pricing levels
compared with other competitors in the same markets had reached an average
of 3083.98 dollars per ton representing 106% of world export price, high
production costs, the reduction of the market penetration rate related to Syrian
olive oil exports in the most important markets amounted to about 0.245 during
the second period of the study. The low value of the dependence on export
indicator compared with the competitive countries where Syria occupied the
seventh place .This means that Syria doesn’t have a good export efficiency, lack
of marketing researches on the foreign markets, the absence of promotional
programs the restrictions applied by the European Union on the exports of
Syrian olive oil, lack of access to all distribution outlets due to the dependence
of the exported companies on the exclusive agents in the process of distribution
and marketing. The results had recommended that the establishment of a
comprehensive database and accurate studies is very necessary for the Syrian
exported products, in addition to detailed studies about the major and
promising markets to Syrian olive oil exports, iImproving the Syrian business
environment to encourage the foreign direct investment to support the
competitiveness of Syrian olive oil exports.
اختُبر 12 طرازا وراثياً من القمح القاسي Triticuum. durum لصفة الغلة الحبية
في ثلاثة مواقع بيئية متباينة خلال موسمي 2013-2014 , 2014-2015
بثلاثة معدلات بذار ( 150, 200 ,250 ) كغ/ ه و تضمنت المادة الوراثية 7 سلالات
مبشرة و خمسة شواهد تمثل أصناف ا
لقمح القاسي المحلية لمنطقتي الاستقرار الأولى
و الثانية. صممت التجربة وفق تصميم القطاعات الكاملة العشوائية في ثلاثة مكررات,
حللت البيانات و تمت المقارنة وفق اختبار أقل فرق معنوي LSD عند مستوى دلالة 5%.
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