مدير المعهد الحالى

أ.د/ علاء البابلى

مدير معهد بحوث الأراضى والمياه والبيئة

إدارات المعهد المتعاقبة
من البداية حتى الآن

م. محمد أحمد ثابت

مدير معهد بحوث الأراضى والمياه والبيئة الفترة: 1950 - 1954

مواقع صديقة

وزارة الزراعة وإستصلاح الأراضى
Ministry of Agriculture and Land Reclamation
مركز البحوث الزراعية
Agricultural Research Center
المكتبة القومية الزراعية
Egyptian National Agricultural Library
مزيد من المواقع الصديقة

مواقع مفيدة

المركز الدولى للبحوث الزراعية بالمناطق الجافة
International Center for Agricultural Research in the Dry Areas
المركز القومى للبحوث
National Research Center
منظمة الأغذبة والزراعة بالأمم المتحدة
Food And Agriculture Organization OF The United Nations
مزيد من المواقع المفيدة

تابعونا على مواقع التواصل


أحدث البحوث المضافة

Gehan H. Youssef ; Wafaa M. El-Etr; Hanaa A. Zein El-abdeen and W. M. El-Farghal ( 2019). Evaluation of Some Synthetic Soil Conditioners and Nitrogen Rates on Nitrogen Use Efficiency by Maize - Wheat Crops System in CalcareousSoil J.Soil Sci. and Agric. Eng., Mansoura Univ., Vol. 10 (1): 1- 11, 2019
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Hanaa, A. Zein El-Abdeen and Khaled, Y. Farroh ( 2019). Preparation and Characterization of Nano Organic Soil Conditioners and It's Effected on Sandy Soil Properties and Wheat Productivity. Nature and Science 2019;17(2 )
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أحدث رسائل الماجستير
المضافة إلى الموقع

عبد الرحمن أمير عبده ( 2015).
الخمائر كاداه واعده لإنتاج الزيوت الميكروبيه.
Yeasts As Apromising Tool For Microbial Oil Production
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إيمان عبد المجيد زغلول( 2015).
كفــاءة الأســـمـدة النيتــروجينيــة فـي الأراضــي الملــوثــــة
Efficiency Of Nitrogen Fertilizers In Contaminated Soils
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أحدث رسائل الدكتوراه
المضافة إلى الموقع

محمد سعد عبد الستار رمضان( 2016).
علاج بعض الأراضي المصرية الملوثة بالعناصر الثقيلة باستخدام بعض النباتات المجمعة لهذه العناصر
Phytoremediation of Some Egyptian Soils Polluted with Heavy Metals
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أيمن حاكم سراج( 2015).
نمو ومحصول وامتصاص العناصر في الذرة متأثرة بالتسميد العضوي والحيوي تحت الظروف الملحية.
Growth, yield and nutrients uptake of maize as affected by organic and biofertilization under saline conditions
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Shreen S. Ahmed and A. H. Fahmy( 2019). Applications of Natural Polysaccharide Polymers to Overcome Water Scarcity on The Yield and Quality of Tomato Fruits. . J. Soil Sci. and Agric. Eng., Mansoura Univ., Vol. 10 (4): 199 - 208, 2019
Abstract: As a result of water resource crisis, water-saving agriculture is necessary for sustainable development. Natural polysaccharide polymer is gaining great acceptance over synthetic polymers as controlled-release systems due to it is safe for the environment, cost effectiveness, easy availability, and biodegradability. This study is designed to evaluate the potential of natural polymers (cellulose, starch and cellulose/starch composite) to overcome scarcity of water on tomato (Solanum lycopersicum). Two different agricultural solid residues (rice straw and potato peels) were used to prepare of natural polymers. Polymer efficiency to water-saving and controlled release sencor herbicide was studied. Greenhouse experiment was conducted during 2017/2018. Four treatments; without polymer as a control and with different polymers (cellulose, starch and cellulose/starch composite) under three different level of irrigation (100, 75, and 50% FC) were used. Data indicated that the maximum swelling ratio of different polymer were in the fowling order, cellulose/starch (6.21 g/g) > Cellulose (4.80 g/g) > Starch (3.01 g/g). The results from the pot experiment showed that the addition of natural polymers to the soil have a positive effect to conserve water and increase the proportion of soil moisture compared to control. The highest increase was recorded at cellulose/starch polymer, this increase reached to 2.7-, 2.2- and 2.1 fold for 100, 75 and 50% FC that control. Natural polymers application with different water stress condition have positively affected on yield and quality of tomatoes especially when polymers were use under full irrigation. The increase of yield was recorded when applied different polymers (cellulose, starch and cellulose/starch) under full irrigation (100% FC), this increase reached to 13.7, 14.7 and 20.5% compared to without polymers and 2.2, 3.8 and 5.4% under irrigation scarcity (75% FC) compared to control without polymers (100% FC). Irrigation scarcity increased proline and phenol content and decrease total chlorophyll. Vitamin C, total soluble solids, pH, lycopene and juice content improved significantly with applies of natural polymers. The use of natural polymers under water scarcity improved the water use efficiency (WUE) of tomatoes.

Keywords: (Natural polysaccharide polymers; agricultures residues; cellulose, starch, controlled release systems, soil.)

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