مدير المعهد الحالى

أ.د/ محمد الخولى

مدير المعهد

إدارات المعهد المتعاقبة
من البداية حتى الآن

أ.د/ أحمد طاهر

مدير معهد بحوث الأراضى والمياه والبيئة الفترة: 1999 - 2001

مواقع صديقة

وزارة الزراعة وإستصلاح الأراضى
Ministry of Agriculture and Land Reclamation
المكتبة القومية الزراعية
Egyptian National Agricultural Library
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مواقع مفيدة

المرجع الزراعى
Agri-Science Reference
المركز الدولى للبحوث الزراعية بالمناطق الجافة
International Center for Agricultural Research in the Dry Areas
الإدارة المركزية للأراضي والمياه والبيئة‎
Central Administration of Soils, Water and Environment
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أحدث البحوث المضافة

Hossam S. El-Beltagi , Fadl A. Hashem, Mona Maze, Tarek A. Shalaby, Wael F. Shehata and Noura M. Taha( 2022). Control of Gas Emissions (N2O and CO2) Associated with Applied Different Rates of Nitrogen and Their Influences on Growth, Productivity, and Physio-Biochemical Attributes of Green Bean Plants Grown under Different Irrigation MethodsAgronomy 2022, 12, 249.
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Doaa Ahmed El-Nagar a Dalal Hereimas Sary( 2021). Synthesis and characterization of nano bentonite and its effect on some properties of sandy soilsSoil & Tillage Research 208 (2021) 104872
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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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Mohamedin, A.A.M( 2012). Effect Of Leaching With Adding Gypsum And Rice Straw Compost On Improving Salt Affected Soil And Rice YieldMinia International Conference For Agriculture And Irrigation In The Nile Basin Countries, 26th -29th March 2012, El-Minia, Egypt
Abstract: This study was conducted to investigate the efficiency of leaching process with adding gypsum or compost and their combination on improving of poorly productive salt affected soil, the rice growth and nutrient uptake at El-Hamoul area which represent the salt affected soil in the northern part of the Nile Delta. The treatments were adding gypsum in rates of 0, 2.5, 5, and 10 (Mg fed.-1) or compost in rates of 10 and 20 Mg fed.-1 and combination of 2.5 gypsum with compost 10 Mg fed.-1. Rice was transplanted after the recommended soil preparation. Three successive leachate were done with the same volume of irrigation water. The discharged water through drain’s outlet and its electrical conductivity (ECd) were measured. Soil physical and chemical properties and plant analysis were done at harvesting. The results indicated that absolute differences in leachate volumes, due to leaching process, were relatively small for no amended soil and increased with gypsum application rates. The percolation of water through the gypsum treated soil profile was much faster than the control indicating that gypsum was the main factor to percolate process. Compost combined with gypsum treatment was more effective than compost alone. Salinity of the drained water (ECd ) values had sharply decreased until the third leaching, then a slight decrease was recorded with gypsum treatments. However, with compost treatments, the ECd values had the same trend, but the sharp decrease was retarded until the 4th leaching. The mean value of ECd in leachate was reduced from 32.50 to 5.17 dSm-1. This decrease was a function of the number of leachings of the soil. Consequently, leaching the soil treated with gypsum was more effective in removing the soluble salts. Leaching with adding compost reduced ESP at the end of leaching than the control. Increasing gypsum rates decreased ESP. Moreover, leaching with gypsum and compost decreased ESP value to 11.64. The results revealed that rice shoot dry weight was increased from 1890 to 2940 kg/fed. as gypsum rates increased from zero to 10 Mg fed-1. The corresponding value for compost increased from 2541 to 3801 kg/fed. at 10 and 20 Mg fed.-1, respectively. The combined effect of compost and gypsum treatment was greater than the individual one (4208 kg/fed.). Nitrogen and phosphorus content in rice dry matter was increased with compost application while they were not significantly affected by gypsum application rates. In addition, K content was not significantly affected by either gypsum or compost applications. The Na content was lower, however Ca and Mg content was higher in rice plants grown in gypsum treatments compared with compost ones. Thus, it can be said that leaching the salt affected soil with gypsum combined with compost was entirely safe. This treatment is more profitable than the leaching with water only (control).

Keywords: (Compost, gypsum, leaching process, salt affected soil, rice yield, componantes.)

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