The effects of different regimes on tomato (Lycopersicon lycopersicum l. Var. Hazal) yield and quality characterictics under unheated greenhouse conditions

Abstract

The aim of this study was to determine the effect of deficit irrigation on yield for tomato 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 ranged from 65 to 564 mm, and water consumption ranged from 95 to 568 mm. The effect of irrigation water level on the yield, fruit height, fruit diameter, fruit weight and dry matter were found to be significant. The highest yield was 91.0 t ha^-1. Crop yield response factor (k<inf>Y</inf>) was found as 0.99 The highest values for water use efficiency (WUE) and irrigation water use efficiency (IWUE) were found to be 17.37 and 13.92 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 tomato irrigation by drip irrigation under unheated greenhouse condition.