Effect of irrigation water salinity was investigated on both the yield and quality of sainfoin and soil salinization under greenhouse conditions in 35 cm wide and 65 cm long PVC columns. Sainfoin was chosen because it is grown in arid and semiarid region with salinity problems and it is cold resistant. 5 levels of water salinity (0.27, 3.5, 7, 10 and 13 dS m -1 ) and two levels of alkalinity (SAR=0.35 and 10) were evaluated as a factorial in a randomized -plot design with three replicates. Sainfoin was harvested twice. Plants got shorter and dry hay yield and crude protein ratio were declined as the levels of salt and alkalinity increased for both harvests. There were no live plants in the second harvest when salt concentration and alkalinity was highest. Increase in soil salinization was also observed with increasing water salt level.Key Words: Sainfoin, irrigation water salinity, salinity-yield relation. Sulama Suyu Tuzlulu ğ unun Korungan ı n (Onobrychis viciifolia Scop.) Baz ı Bitki Geli ş im Parametreleri ve Toprak Tuzlulu ğ una EtkisiÖz: Bu çal ış ma sulama suyu tuzluluklar ı n ı n korungan ı n verimi ve kalitesi ile toprak tuzlula ş mas ı üzerine olan etkilerini ortaya koymak amac ı yla serada, 35 cm çap ı nda ve 65 cm yüksekli ğ inde PVC kolonlarda yap ı lm ışt ı r. Korunga tuzluluk sorunu olan kurak ve yar ı kurak bölgelerde yeti ştiğ i ve soğ uğ a dayan ı kl ı oldu ğ u için seçilmi ştir. 5 sulama suyu tuzlulu ğ u (0.27, 3.5, 7, 10 ve 13 dS m -I ) ve iki alkalilik düzeyinde (SAR= 0.35 ve 10) 3 tekrarlamal ı olarak, tesadüf parsellerinde faktöriyel düzende ele al ı nm ışt ı r. Kolonlardan 2 kere biçim yap ı lm ışt ı r. Her iki biçimde de artan tuz miktar ı ve alkalilikle bitki boyu k ı salm ış , kuru ot verimi ve ham protein oran ı azalm ışt ı r. Hatta en yüksek tuz konsantrasyonu ve alkalilikte ikinci biçimde canl ı bitki kalmam ışt ı r. Ayrı ca sulama suyu tuzlulu ğ unun art ışı na bağ l ı olarak toprak tuzlulu ğ u art ış göstermi ştir.Anahtar Kelimeler: Korunga, sulama suyu tuzlulu ğ u, tuzluluk-verim ili şkisi.
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