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

Bu çalışmada Harran Ovasında farklı drenaj yönetimlerinin toprak tuzluluğu, bitki besin elementlerininyıkanması ve su kazanımı üzerine etkileri belirlenmiştir. Toprak tuzluluk düzeyi, drenaj suyu kalitesi vesulama sayı ve sulama suyu miktarları kontrollü (KD) ve serbest (SD) drenaj alanlarında karşılaştırılmıştır.KD alanında toplam 517 mm sulama suyu uygulanmasına karşılık 42 mm drenaj suyu oluşmuş ve drenajoranı % 8 olmuştur. SD alanında ise 490 mm sulama suyu uygulanmış, drenj suyu ise 61 mm olarakmeydana gelmiş, drenaj oranı kontrollü drenaj alanındakinden daha yüksek olarak gerçekleşmiş ve yaklaşık% 12,5 olmuştur. Farklı drenj yönetimleri drenaj suları ile kaybolan bitki besin element kayıp oranlarınıönemli düzeyde etkilememiştir. Ancak, kontrollü drenj alanından daha az su drene olması nedeniyle bitkibesin element kaybı da az olmuştur. Her iki drenaj yönetimi de toprak tuzluluğunda önemli bir değişmeyeneden olmamıştır

Güneydoğu Anadolu Bölgesi, Harran Ovasında Farklı Drenaj Yönetimlerinin Su Kazanımı, Tuz Dengesi ve Bitki Besin Element Kayıplarına Etkisi

The impacts of varying drainage managements on salinization, nutrients leached and water savingsin the Harran plain were determined. Controlled (CD) and free flow drainage (FD) systems werecompared in terms of drainage water quality, the number and amounts of irrigation, degree of soilsalinity. In CD area , total of 517 mm of water were applied, and drain flow was a total of 42 mm anddrainage ratio was 8 %. In FD area, total of 490 mm of water were applied and total drainage wateramounts reached to 61 mm and the drainage ratio was 12.5%, this was a value higher than that ofattained from the other controlled drainage area. Varying drainage conditions do not have any significanteffect 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 drainingconditions showed no significant variability in soil salinity

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