SOIL Studies

SOIL Studies

2019, Vol 8, Num, 3     (Pages: 162-168)

Determination of Irrigation Program with Using Leaf Water Potential in Yalova İncisi Table Grape Variety with Subsurface Drip Irrigation


1 Alata Bahçe Kültürleri Araştırma Enstitüsü Müdürlüğü, Mersin

DOI: 10.21657/topraksu.655611
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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 İncisi 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 Topçu 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 İncisi variety can be obtained when irrigated at leaf water potential value Ψ =0.92 MPa.

Keywords : Grapevine, irrigation scheduling, leaf water potential, subsurface drip irrigation