The Effect of Water, Effluent and Urban Wastewater on the Germination Characteristics of Fraxinus excelsior

One of the general principles of sustainable landscape management strategies that urban planners have outlined for the success and expansion of green space in arid and semi-arid areas is the use of lower quality water resources. Among the different sources of wastewater and recyclable sources, domestic wastewater is a top priority due to its high volume and better quality after the treatment processes. Therefore, it is believed that urban wastewater effluent can be used as water needed for urban and forest parks, on the outskirts of cities and industrial complexes to develop green space and reduce air pollution. For this purpose, we investigated the effect of water, effluent and wastewater on the germination characteristics of the Fraxinus excelsior. This design is a completely randomized design with three replications in the treatment plant of Parkandabad 1 in 1395-1396. Experimental treatments consisted of irrigation with ordinary water, wastewater and wastewater. Each experimental treatment was performed at 4 levels of irrigation (50, 80, 100 and 120 plants water requirement) and applied to the seeds by weight method. The results showed that the mentioned treatments resulted in a significant difference in germination percentage, sperm germination rate at 1% and significant difference at 5% level in sparrow seed vigor index between treatments. The effect of treatments on chlorophyll a, b and t had significant effect at 5% level between treatments. The effect of irrigation treatments with ordinary water, wastewater and wastewater on the amount of zinc, copper and lead leaf of ash leaf had a significant effect at 5% level between treatments.