Volume 11, Issue 1 (6-2018)                   ijhe 2018, 11(1): 75-84 | Back to browse issues page

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Baghaie A, Mahanpoor K. Lead phyto-remediation by corn (Maxima CV.) and white clover in monoculture and mixed culture system in a Pb polluted soil . ijhe. 2018; 11 (1) :75-84
URL: http://ijhe.tums.ac.ir/article-1-5921-en.html
1- Department of Soil Science, Arak Branch, Islamic Azad University, Arak, Iran , a-baghaie@iau-arak.ac.ir
2- Department of Chemistry, Arak Branch, Islamic Azad University, Arak, Iran
Abstract:   (134 Views)
Background and Objective: Lead is a dangerous heavy metal for human health. This research was conducted to study the potential of a new Iranian corn (Maxima CV.) and white clover in monoculture and mixed culture for phytoremediation of Pb in a Pb polluted soil.
Materials and Methods: The experimental treatments consisted of corn and white clover in a mixed culture (with 10 and 20 plant density) and either corn or white clover in a monoculture system (with 10 and 20 plant density) in a Pb polluted soil (800 mg Pb (kg soil)‌-1) at 60 and 90 days of  experiment. Plant and soil Pb concentration were measured using atomic absorption spectroscopy.
Results: Root and shoot Pb concentration of corn and white clover were significantly increased in a mixed culture system relative to mono culture system. In addition, the increase of white clover density from 10 to 20 in a mixed culture system caused a significant increased Pb concentration in root and shoot of corn and white clover. The highest Pb translocation factor (TF) and shoot Pb concentration were observed in white clover in a mixed culture of corn and white clover (with 20 plants density).
Conclusion: The results of this study showed that the Pb concentration of corns shoot in a mixed culture system with corn and white clover (20 densities) was three times higher than that of the monoculture system.
 
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Type of Study: Research | Subject: General
Received: 2017/07/20 | Accepted: 2018/01/1 | Published: 2018/07/17

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