Volume 6, Issue 4 (2-2016)                   2016, 6(4): 11-21 | Back to browse issues page

XML Persian Abstract Print

College of Agric., Bu-Ali Sina Univ., Hamadan, Iran.
Abstract:   (5942 Views)

Limited water resources in arid and semi-arid regions are one of the major limiting factors in agricultural production. Thus, unconventional water resources, such as urban and industrial treated wastewater, may be used for irrigation. Application of wastewater to soil may cause accumulation of heavy metals (HMs). Soil pollution causes uptake of these metals by plants and their entrance to food chain. In the present greenhouse research, concentration variations of HMs (zinc, copper, cadmium, nickel, iron and manganese) in soil and radish plant were investigated. The experiment was conducted as a completely randomized design with three replications and irrigation with different percentages of treated wastewater (0, 25, 50, 75 and 100%). Results of soil chemical analysis showed that irrigation with treated wastewater significantly increased sodium adsorption ratio, salinity level and chloride content of soil. While, using different percentages of treated wastewater decreased significantly (P≤0.01) soil pH. Results revealed that total and available concentrations of HMs in soil irrigated with wastewater were higher than the those in soil irrigated with tap water. However, metal concentrations were much lower than the critical limits in soil. Therefore, had no adverse effects on soil quality. The results also showed that HM concentration in roots and aerial parts of radish plant was not increased significantly as a result of wastwater irrigation.

Full-Text [PDF 15 kb]   (2376 Downloads)    
Type of Study: Research |
Received: 2016/02/1 | Accepted: 2016/02/1 | Published: 2016/02/1

Add your comments about this article : Your username or Email:

Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.