The effects of different regimes on potato (Solanum tuberosum L. Hermes) yield and quality characteristics under unheated greenhouse conditions

Abstract

The aim of this study was to determine the effect of deficit irrigation on yield for potato grown under unheated greenhouse condition. The research was carried out at the Agricultural Research Station of Yenişehir High School of Uludag University in Bursa, Turkey, in 2007. In the study, water was applied to tomato as 1.00, 0.75, 0.50, 0.25 and 0.00% (as control) of evaporation from a Class A Pan corresponding to 2 day irrigation frequency. Irrigation water applied to crops ranged from 94 to 746 mm and water consumption ranged from 190 to 754 mm. The effect of irrigation water level on the yield, tuber heigth, diameter, weight, dry matter, starch matter, the tuber number per plant and plant height were found to be significant. The highest yield was 36 t ha^-1. Crop yield response factor (k<inf>y</inf>) was found as 1.13. The highest values for water use efficiency (WUE) and irrigation water use efficiency (IWUE) were found to be 4.84 and 4.29 kg m^-3 for the K2<inf>cp</inf> treatment. Under the conditions that water resources are scarce, it can be recommended that K2<inf>cp</inf> treatment is most suitable as a water application level for potato irrigation by drip irrigation under unheated greenhouse condition.