عنوان مقاله [English]
The goal of this study was to investigate the effect of conjunctive irrigation with seawater and fresh water on the growth properties of Spinach (Spinacia oleracea L.) in greenhouse condition. In this study, four conjunctive use of seawater and fresh water (tap water, irrigation with 1/2 of seawater with tap water, alternate irrigation with seawater and tap water, the mixture of seawater and tap water) is evaluated on yield and yield components of Spinach. The research was done based on completely randomized design including 3 replications as pot planting in Gorgan University of agricultural sciences and natural resources during 2016. The results indicated that the effect of different moderation of irrigation regimes on the shoot and root dry weights, shoot fresh weight was highly significant (P<0.01), but root fresh weights, leaf number, plant height, and chlorophyll were significant at 5 percent levels (P<0.05). The result showed that the highest yield and yield components of Spinach in control treatment and afterward 1/2 seawater followed by 1/2 freshwater irrigation regime compared to other regimes (a mixture of 30:70 seawater and freshwater, alternate regimes), was measured. half alternate of sea water and tap water has resulted in decreasing of shoot fresh and dry weights 1.05 and 1.1 percent, respectively.
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