Effect of different levels of irrigation and salinity on yield of greenhouse cucumber in Jiroft region

In arid and semi-arid regions, salinity is a serious and chronic problem for agriculture. Due to the improved methods of irrigation and mechanization this methods to increase water use efficiency and enhance the uniformity of water distribution in the field, is very important. In order to investigate the effect various source of saline water as well as different value of irrigation on characteristics of greenhouse cucumber, a field experiment was carried out during 2018 growing seasons at an experimental farm in Jiroft territory of Kerman province. The treatments were laid out in Randomized Complete Block Design with three replications. The treatments were comprised of four levels of irrigation including 15, 30, 45 and 60 mm evaporation for class A pan and three salinity of irrigation including 0.9, 2.6 and 7.5 dS.m-1 as the main and sub plot respectively. The results showed that in comparison to 30 and 15 evapotranspiration for class A pan, parsimony of water usage equal 370 m3 ha-1 achieved. Moreover yield, high plant, weight fruit and number of fruit per plant decreased 6.3, 8.1, 5.2 and 8.1 percent respectively but water productivity increased 5.9 percent. Also, In comparison to 0.9 and 2.6 dS.m-1 salinity of irrigation, yield, high plant, weight fruit, number of fruit per plant and water productivity decreased 7.1, 5.6, 5.2, 6.1 and 7.1 percent respectively.