SOIL Studies

SOIL Studies

2016, Vol 5, Num, 1     (Pages: 022-028)

Impacts of Different Drainage Managements on Water Saving, Salt Balance and Nutrients Losses in the Harran Plain, South East Turkey

İdris BAHÇECİ 1

1 Harran University, Faculty of Agriculture, Department of Agricultural Structure and Irrigation, Şanlıurfa

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The impacts of varying drainage managements on salinization, nutrients leached and water savings in the Harran plain were determined. Controlled (CD) and free flow drainage (FD) systems were compared in terms of drainage water quality, the number and amounts of irrigation, degree of soil salinity. In CD area , total of 517 mm of water were applied, and drain flow was a total of 42 mm and drainage ratio was 8 %. In FD area, total of 490 mm of water were applied and total drainage water amounts reached to 61 mm and the drainage ratio was 12.5%, this was a value higher than that of attained from the other controlled drainage area. Varying drainage conditions do not have any significant effect on the plant nutrient element losses. However, the lessening in the amount of the drainage water, due to controlled drainage, will cause lessening also in the plant nutrient element losses. Both in draining conditions showed no significant variability in soil salinity.


Keywords : Controlled drainage, Harran Plain, nutrients losses, salt balance