[01] Azmi Elhag Aydrous, Department of Agricultural Engineering, Faculty of Agriculture, Omdurman Islamic University, Omdurman, Sudan. [02] Abdel Moneim Elamin Mohamed, Department of Agricultural Engineering, Faculty of Agriculture, University of Khartoum, Khartoum, Sudan. [03] Shaker Babeker Ahmed, Department of Agricultural Engineering, Faculty of Agriculture, Omdurman Islamic University, Omdurman, Sudan. [04] Abdelbagi Ahmed Abdelbagi, Department of Crops sciences, Faculty of Agriculture, Omdurman Islamic University, Omdurman, Sudan. [05] Salah Abdel Rahman Salih, Department of Agricultural Engineering, Faculty of Agriculture, Elneelain University, Khartoum, Sudan.

The experiment was conducted at Khartoum New International Airport (KNIA), 40 kilometers south of Omdurman during 2010-2011 and 2011-2012 rainy seasons in an area of 5 hectares. Five water harvesting techniques namely, semi- circular water traps, V-shaped water dikes, pits, deep ditches and land without water harvesting technique were used. Soil analysis was also carried out including soil pH, electrical conductivity (E.C.), Ca++, Mg++, sodium (Na+) contents and sodium adsorption ratio (SAR).The results showed that, with the exception of control and V-shape treatments in the first season and semi-circular, deep ditch and V-shape treatments in the second season, soil pH after rainfall was significantly higher than before rainfall. For Ec, with the exception of semi-circular, pits and deep ditch treatments in the first season, E.C. was significantly higher before rainfall as compared to after rainfall. Except the control and V-shape in the first season and control and deep ditch in the second season, Ca+Mg, Na+ contents and SAR were significantly lower after rainfall as compared to that before rainfall in both seasons.

Micro-Catchment Techniques, pH, Electrical Conductivity, Sodium Adsorption Ratio

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