Document Type : Research Paper
Authors
Abstract
A principle that is of high importance in sustainable landscape management and water-wise landscaping is the wise use of low-quality water resources in agriculture and urban landscape maintenance. In addition, use of trees with low water requirement is a major factor in landscaping. In order to investigate the impact of water quality and its application method on nutrients absorption by olive trees, an experiment was carried out during 2010-2012 in Isfahan University of Technology on one-year old olive trees. The trees were irrigated by two methods i.e. a new subsurface leaky irrigation (SLI) system and surface irrigation, and two water quality treatments i.e. clear and reclaimed water, for two years Results showed that recycled water increased nutrient elements nitrogen, phosphorous, potassium, and magnesium (N, P, K, Mg) in leaves of the plants. The applied recycled water improved height, shoot number, and chlorophyll content. Irrigating trees by SLI system enhanced growth and shoot number. Nutrient elements (N, Mg, P) content in trees grown under SLI irrigation system was higher than surface system. To sum up, this experiment showed that recycled water could be a promising source for landscape trees irrigation. Also, SLI in this research was more efficient than the surface system in irrigation of urban landscape.
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