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COMPARISON OF INFILTRATION MEASURING TECHNIQUES FOR FURROW IRRIGATION IN CRACKING CLAY SOIL

How to cite

Abdel Moniem ElAmin Mohammed ,Hassan Ibrahim Mohamed ,Haitham Ragab Elramlawi ,2007, COMPARISON OF INFILTRATION MEASURING TECHNIQUES FOR FURROW IRRIGATION IN CRACKING CLAY SOIL,Journal of Science and Technology,8 (1) ,pp:0-0

Authors:
By Abdel Moniem ElAmin Mohammed ,Hassan Ibrahim Mohamed ,Haitham Ragab Elramlawi ,
Year:
2007
Keywords
infiltration measurement, furrow irrigation, cracking clay soil.
Abstract
Four different techniques of determining infiltration rate: namely ring infiltrometer, level basin-furrow, inflow-outflow and volume-balance, were compared in cracking clay soils in Rahad Irrigation Project to determine their effect on Kostiakov-Lewis equation on the basis of field measurements. The functional relationships among the coefficient of infiltration equation were studied for each method of infiltration measurement. Volume-balance technique showed the highest value of the intercept of Kostiakov equation while the inflow-outflow technique showed the lowest values. The exponent obtained by inflow-outflow technique was highest while the one found by volume-balance was lowest. Infiltration rate measured by the double ring infiltrometer method was found to be significantly (p < 0.05) different from the result of other methods. Statistical analysis showed that volume-balance technique was the most suitable and accurate method among the tested techniques for estimating infiltration rate in cracking clay soils.
الملخص
تم مقارنة أربع طرق لتقدير معدل التسرب في الأراضي الطينية المشققة في مشروع الرهد الزراعي. وشملت الطرق حلقات التسرب المزدوجة والأحواض المستوية التي بها سراب وطريقة الموازنة الحجمية. استخدمت هذه الطرق لتحديد تأثيرها على دوال وثوابت معادلة كوستياكوف-لويس بناءً على القياسات الحقلية. نتج عن الطريقة الموازنة الحجمية أكبر قيمة للقاطع في معادلة كوستياكوف بينما أظهرت طريقة الدخل والخرج اقل قيم. كما أن الأس الناتج بطريقة الدخل والخرج كان أعلى قيمه بينما ذلك المحدد بطريقة الموازنة الحجمية كان اقل قيمه. وجد أن معدل التسرب باستخدام طريقة حلقات التسرب المزدوجة يختلف معنويا عن القيم المحددة بالطرق الأخرى. اظهر التحليل الإحصائي أن طريقة الموازنة الحجمية أكثر الطرق دقه وملائمة مقارنة بالطرق الأخرى التي تمت دراستها لتقدير معدل التسرب في الأراضي الطينية المتشققة.
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