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Register a new userSome Factors Affecting Farmer Decision to Use the Chemical Fertilizer in Al-Ahassa Area of the Kingdom of Saudi Arabia
بعض العوامل المؤثرة في قرار المزارع في استخدام الأسمدة الكيميائية
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هدف هذا البحث إلى دراسة المتغيرات التي تؤثر في قرار المزارع في استخدام الأسمدة الكيميائية، و تحديد أهم تلك المتغيرات. هذا و قد صممت استبانة خاصة لجمع بيانات هذه الدراسة بالمقابلة الشخصية لتسعين مزارعًا من مزارعي محافظة الأحساء - المملكة العربية السعودية. و تم تحليل استبانة ٨٥ مزارعا لاستيفائها البيانات المطلوبة و استخدمت النسب المئوية و التوزيع التكراري لوصف أفراد العينة. كما استخدم الارتباط البسيط و الانحدار المتعدد لتحديد العلاقة الارتباطية و المتغيرات المؤثرة في قرار المزارع في استخدام الأسمدة الكيميائية.
The main objective of this study was to determine factors affecting the farmers decision to use the chemical fertilizer in Al-Hassa area of Saudi Arabia. For this purpose, a questionnaire form was developed and distributed among ٩٠ randomly selected farmers operating in the study area. Interviews conducted to collect the needed data, means and standard error, percentage, frequency, and simple correlation as well as multiple regressions were used to analyze the data.
References used
الأمانة العامة لجامعة الدول العربية وآخرون. ١٩٩٩ . التقرير الاقتصادي العربي الموحد، جمهورية مصر العربية، القاهرة
المنظمة العربية للتنمية الزراعية. ١٩٩٦ . التقرير السنوي للتنمية الزراعية. الخرطوم – جمهورية السودان
وزارة الزراعة والمياه. ١٩٩٨ . تحد وإنجاز عبر مئة عام للزراعة والمياه في المملكة العربية السعودية. الرياض، المملكة العربية السعودية
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This paper investigates the proximate analysis of zooplankton and the
jellyfish Catostylus perezi through studying the content of proteins, lipids and
carbohydrates (as glucose) in three different stations of Al-Khobar coastal area
(Saudi Arabia)
during four seasons. Physical and chemical factors of water,
specific composition, abundance and biomass of zooplankton were also studied.
The results indicate clear temporal and spatial differences in the content of
organic matter of zooplankton. Proteins values were between 118.8 and 439.7
mg/g and lipids values were between below detection levels and 55.2 mg/g;
whereas carbohydrates values ranged between 0.035 and 0.371 mg/g as dry
weight. The results indicate clear differences in the content of organic matter of
the jellyfish parts especially the medusa.
In this research, the natural pyrite ore found in Tartous Governorate was described by studying the two samples taken from Hosn Suleiman -Safita (A) and Al Qadmous (B) area, in addition to studying the optimum conditions for pyrite dissolution (pH -
time - quantity) with aerobic conditions.
The results of X-ray diffraction (XRD) showed that the sample (A) is mainly composed of pyrite mineral and does not contain impurities, while sample (B) is composed of pyrite mineral combined with a small amount of calcite mineral, and these results were confirmed by the result of (FTIR) infrared spectroscopy and Polarised light microscopy (PLM(. The iron percentage in the two samples (A,B) is ranged between (42.6 – 43 %) and the sulfur percentage is between (40 – 53.7 %).
With regard to pyrite dissolution, the results showed that pyrite taken from Hosn Suleiman (A) begins to dissolve at pH values less than 4.5, and the contact time is about 6 hours. By Comparing the results of sample (A) with sample (B), we found that the dissolution of sample (A) was about three times less than the dissolution of sample (B), and this is due to the fact that sample (A) contains pure and well crystallized pyrite ore while sample (B) contains pyrite combind with calcite, which increases its solubility.
This study conducted at Deir Al-Hajar Station during the season 2010-2011
to describe the lactation curve of Shami cattle and determine factors affecting
its shape compenents. 1120 records of 356 Shami cows collected between 1997 –
2010 were used.
Data were subjected to general linear model, and the analysis
of variance used to determine the effect of factors. Duncan test was used to
compare the means using SAS system (1996) and Incomplete gamma functions
were used to estimate the parameters of lactation curve (a, b and on the basis of
daily yield of milk.
Results indicated that the average values of the gamma parameters were
2.14 ± 0.01 kg for a (beginning of milking ), 0.61 ± 0.02 kg for b (increasing milk
production up to peak) and - 0.23± 0.01 kg for c (decreasing milk production
from peak to dry). The effect of calving year was significant (p<0.01) on a, and
(p<0.05) on b and (p<0.001) on c. The effect of age at calving and sex of calf was
significant (p<0.01) on a but non significant on b and c. Season of calving,
parity, and interaction between age and parity was not significant on all
parameters.
It was concluded that improving the productive performance of Shami
cattle, requires applying a long term genetic improvement program to select the
best herd.
Four strains of lactic acid bacteria (LAB) from different genus، species and
sources were tested for their abilities to bind of AFM1 for 14 hours.
Lactobacillus rhamnosus LC705 showed higher ability to bind AFM1 (88.35%)،
followed by Bifidobacteri
um bifidum BG1 (84.21%), Lactobacillus bulgaricus
R21 by 80.41% and finally Streptococcus thermophilus by 71.52% after 14
hours of incubation.
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.
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