Document Type : Research Paper
Increasing population growth along with the freshwater resources global crisis necessitates the use of unconventional water resources in agriculture, as the largest fresh water consumer, especially in the arid and semiarid areas. The goal of this study was to effect of irrigation with conjunctive Caspian seawater and fresh water on yield and yield components of Persian leek (Allium persicum L.) in greenhouse condition. The research was done based on completely randomized design including three replications as pot planting in Gorgan University of Agricultural Sciences and Natural Resources during 2015. The treatments included four levels (mixture of sea water + tap water, alternate, half alternate and tap water), respectively. The results inducted that the effect of different irrigation regimes on chlorophyll, shoot fresh weight, plant height, number of leaves per plant, root fresh and dry weight were highly significant (P<0.01), but shoot dry weight and root length were significant at 5% levels (P<0.05). Half alternate, alternate and mixture of sea water and tap water hasve resulted to decreasing of yield 12.1%, 24.9% and 33.7%, respectively. Because of lower salinity in irrigation and access to tap water in the surface layer, the best performance was half alternate treatment in comparison to saline treatment.