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يتناول كتاب (التجارب الزراعية : التصميم والتحليل) والذي قام بتأليفه (فاضل مصلح المحمدي) في حوالي (446 صفحة) من القطع المتوسط موضوع (الزراعة) مستعرضا المحتويات التالية : الفصل الأول : المنطق، البحث والتجربة، الفصل الثاني : بعض المفاهيم الأساسية، الفصل الثالث : تحليل التباين والاختبارات، الفصل الرابع : التصميم العشوائي الكامل، الفصل الخامس : تصميم القطاعات العشوائية الكاملة، الفصل السادس : اختبار المتوسطات، الفصل السابع : تصميم المربع اللاتيني، الفصل الثامن : تصميم القطع المنشقة، الفصل التاسع : تصميم القطع المنشقة، الفصل العاشر : تصميم القطاعات المنشقة، الفصل الحادي عشر : القطع الثانوية كمشاهدات مكررة، الفصل الثاني عشر : التحويلات، الفصل الثالث عشر : الارتباط والانحدار الخطي، الفصل الرابع عشر : العلاقات المنحنية، الفصل الخامس عشر : طرق الانحدار المختصرة، الفصل السادس عشر : الارتباط والانحدار المتعدد، الفصل السابع عشر : تحليل العدات، الفصل الثامن عشر : تحسين الدقة.

This research aims to study the most important factors affecting profit function. Cross sectional data were used in the light of a random sample of 130 farmers in Dhi Qar province. The results showed that the proportion of costs of production inputs amounted to 73% of the total production costs. Also, profit function showed that the amount of output has a significant impact on profit compared to other independent variables since value of the parameter of the quantity of production amounted to about 308879 and was significant at the level of 1% according to t-test. The coefficient determination of about 93% for the equation estimated with OLS. However, heteroscedasticity was obvious according to the White Test. So the model was estimated using robust regression method to avoid this problem, but that led to a decrease in R2 to about 69%. The research recommended the need to increase the rates of production growth and productivity through an organized agricultural economic policy that links the policy of supporting input requirements, both in terms of reducing prices or providing quantity and quality, especially fertilizers and seeds in conjunction with the policy of supporting prices of output. Also, research recommended encouraging farmers to expand wheat crop cultivation in the province of Dhi Qar by increasing the cultivated areas.

الكتاب يشير مجلس معايير المحاسبة الدولي إلى أن طبيعة النشاط الزراعي تخلق عدم تأكد أو تعارض عند تطبيق النماذج المحاسبية التقليدية لأن الأحداث الهامة المرتبطة بالتحول البيولوجي (النمو والتحلل والإنتاج والتكاثر) التي تغير جوهر الأصول البيولوجية من الصعب أن يتناولها نموذج محاسبي مبني على التكلفة التاريخية والتحقيق ونظرا لأهمية \"محاسبة الأصول البيولوجية\" وما تشهده من تطورات على الساحة الدولية والعالمية والمحلية والتي تعبر عن فكر ومضمون جديد للممارسات المحاسبية خاصة في العالم العربي كانت فكرة إعداد هذا \"الكتاب التعليمي\" المعتمد على معايير التقارير المالية الدولية، الذي أراه مفيدا للمحاسبين الموظفي والمهنيين والممارسين والمهندسين الزراعيين والمزراعين وشركات تربية الدواجن والنحل ومنتجي البيض والمديرين الماليين في الشركات والمجتمع المالي في العصر الحالي.

دار المقال حول موضوع بعنوان التوسع الأفقي والتوسع الرأسي في الزراعة العربية مع إشارة خاصة لجمهورية مصر العربية. واستعرض المقال الحديث عن المحتوى المعرفي التي تثير مختلف التجارب الدولية والإقليمية إلى أنه على مر التاريخ الحديث فإن تحقيق التنمية الاقتصادية يصعب إنجازه بدون تحقيق تنمية زراعية مستدامة. وركز على أوضاع التوسع الرأسي في الزراعة المصرية. وأهتم بـ أوضاع التوسع الأفقي في الزراعة المصرية. وعرض أهم الدروس المستفادة في مجال التوسع الأفقي منها، أهمية فكر شمول التنمية، تعميق فكر التوطين وتهيئة البيئة الاجتماعية، التناسق في الأداء بين الجهات المختلفة للدولة والمجتمع، استغلال مقومات التمايز بين أقاليم ومناطق الدولة في مشروعات استصلاح واستزراع الأراضي. واختتم المقال بذكر أهمية النقاش وأنه أثرى مجموعة من المداخلات من السادة الحضور من أهل الفكر والاختصاص. كُتب هذا المستخلص من قِبل المنظومة 2022\"

The issue of food security in Algeria is considered a major challenge facing the country amidst continuous economic and environmental changes. It is a vital and sensitive issue related to providing sufficient and healthy food for all of the country's population. Food security in Algeria faces several challenges including desertification, water scarcity, climate change, and heavy reliance on food imports. Algeria is moving towards enhancing self-sufficiency by supporting local agriculture and developing agricultural technologies to increase production. However, there is still an urgent need for effective measures including improving water resource management, enhancing climate change adaptation, and improving food supply chains to address current and future challenges in food security. The study focuses on analyzing the reality of food security in Algeria with a focus on identifying and understanding the factors affecting the state's ability to ensure the provision of sufficient, safe, and nutritious food for all its citizens.

Herbicides are much more than just chemicals to control weed plants, and they can also influence the ecosystems. So, it is necessary to choose new herbicide with low active ingredients in order to reduce environmental issues, as well as control weed plants. A field experiment was conducted to evaluate the efficiency and to compare two herbicides containing similar active ingredients, Chevalier WG and Atlantis OD, as they contain metsufuron-methyl and iodosufuron-methyl sodium at different rates. Chevalier contains 30 g/l of each active ingredient; whilst Atlantis OD has 10 g/l of metsulfuron-methyl and 2 g/l of iodosufuron-methyl sodium. The results showed that all treatments significantly were active to control the weeds in both wheat varieties. Narrow-leaves Weeds density was decreased density 91.70 and 94.14% by Atlantis OD minus 25% in Aras and Simeto respectively, and the yield of Aras was increased 255%. In accordance with the results, a herbicide with low active ingredients, particularly from the sulfonylurea group such as Atlantis OD, more likely to be recommended for weed control and environmental concerns.

The article presents the results of introgression of valuable genes from wild and cultivated species of Solanum and varieties of the world collection (CIP) to selection varieties in the production of backcross hybrids, selection of recombinants in backcross generations and in offspring from crossbred crosses among themselves, as well as special parent lines for implementation of programs in various areas of potato breeding. Studies were conducted to determine the effectiveness of different types of crossing during backcrossing in the frequency of occurrence of recombinant forms with high rates of polygenic traits in the hybrid progeny. Hybrids-backcrosses for immunity to virus Y, field resistance to late blight and resistance to the pathogen Ro1 of the golden potato nematode were evaluated by the method of artificial infection in pot-plant in a greenhouse. Analysis of hybrid progeny for starch content and suitability for processing by the color of chips was carried out under laboratory conditions. According to the results of the analysis of the pedigrees of 10 varieties of potato originating from the two forms of S. chacoense, a high efficiency of recurrent accumulation crosses providing introgression of the dominant immunity genes to the virus Y is revealed, as well as resistance to alternaria, heat and drought. Medium-late varieties with high field resistance of leaves and tubers were created on the basis of unstable to the late blight hybrid (F1 S. chacoense 55 d x Agra) and 3 recurrent crosses. In this case, varieties with medium field resistance to late blight participated in backcrossing. When assessing the collection of wild species for resistance to the pathogen Ro1 of the golden potato nematode, only one new source of S. chacoense 58 d was detected. Analysis of the cleavage in resistance to nematode among populations from the crossing of three-species hybrids (vrn x chc) x tbr and backcross hybrids (vrn x chc) x tbr2 confirmed control of the trait by one dominant gene, which facilitates selection for this feature. Based on the analysis of the frequency of occurrence of hybrids with different starch content in the fissile offspring, it is established that this feature is controlled by a small amount of pure additively acting genes. In the hybrid populations studied, the symmetrical frequency distribution, the presence of transgressions, and the high correlation between the average starch content of parental forms and the average offspring were observed. In a comparative assessment of 36 hybrid populations on the suitability for processing for potato products, methods for selecting parental forms for crossing and timing of the evaluation of the trait in different periods of tuber storage have been identified. Twenty-two hybrids are identified that are suitable for processing during the entire storage period without reconditioning. An increase in the efficiency of the selection process was noted in the repeated use of identical hybrid populations for selection in various environmental and geographical conditions, which significantly reduces the financial costs of creating a variety.