Yüzeyaltı Damla Sulama Yöntemiyle Sulanan Yalova İncisi Sofralık Üzüm Çeşidinde Yaprak Su Potansiyeline Göre Sulama Programının Oluşturulması

Abstract

This research was carried out in the Eastern Mediterranean Region of Turkey where to determine the effects of various irrigation strategies applied with subsurface drip systems on Yalova Incisi table grape variety and yield and water use efficiency along with optimal irrigation program during 2016, in the experimental fields of Alata Horticultural Research Station, Tarsus Soil and Water Resources Topcu Unit. In the study six irrigation levels (Full irrigation, TS; deficit irrigation, KS75; deficit irrigation, KS50; Partial Root-Zone Drying PRD75% , Partial Root-Zone Drying PRD50% of full irrigation treatments and Rainfed, RF) were tested. Soil water deficit in the rootzone depth was replenished to field capacity in irrigations. The experimental was carried out in randomized block design with three replications. The effect of the irrigation levels on the yield were found statistically significant. Full irrigation treatment under the produced the highest yield (30.9 t ha-1), the lowest yield was obtained in rainfed treatment plots (11.7 t ha-1). Leaf water potantial were measured throughout the growing season with a pressure chamber. The YSP values decreased with increasing water stress. Highest yields of Yalova Incisi variety can be obtained when irrigated at leaf water potential value Ψ =0.92 MPa.