The reuse of domestic wastewater for irrigation of floriculture crops is a very promising option in water-scarce areas. On the other hand, there are concerns about the effect of that kind low-quality water on plant growth. The present work examined the effect of irrigation with several type of treated domestic wastewater on production of carnations. Potted plants were irrigated with primary treated, secondary treated and tertiary treated wastewater as well as with water and water with fertilizer. The results shown that carnations can be irrigated with treated wastewater as the growth and quality of plant is equal or better compared with water. Furthermore, it was found that nutrients and micro-elements contained in treated wastewater had as a result positive effect on characteristics of carnations.

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