Effect of different irrigation aplications on yield and some quality parameters of drip irrigated vineyard

This research was conducted to determine the effect of different irrigation intervals and levels on fresh grape yield, some quality parameters and water-yield functions of vineyard in the Manisa Alaşehir Plain conditions during the year of 2015. Experiment was set up out in randomized block design with two factors and three replications. In the trials, irrigation water was applied to plant as 33 %, 67 % and 100 % of evaporation from Class A Pan corresponding to 3- and 6-day irrigation intervals. The results revealed that irrigation intervals and levels affected fresh grape yield and some quality parameters. The highest fresh grape yields were obtained as 2002.7 kg/da from full irrigation level of 100 % (T100) treatment in 6 days intervals. The amounts of applied irrigation water 403.0 mm and seasonal water consumption value 600.3 mm in the full irrigation treatment. Irrigation water was applied 11 times during the growing season in the suggested treatments (T100). Water use efficiency values were between 2.99-3.99 kg/m3 . The yield response factor (ky) were found to be 0.69 and 0.58, for 3 days and 6 days irrigation intervals, respectively. Key Words: Vineyard, irrigation intervals, irrigation level, drip irrigation, water-yield functions