EFFECT OF SIMULTANEOUS ESTABLISHMENT OFSEDUM ALFREDIIANDZEA MAYSON HEAVY METAL ACCUMULATION IN PLANTS
- 9 March 2005
- journal article
- research article
- Published by Informa UK Limited in International Journal of Phytoremediation
- Vol. 7 (1), 43-53
- https://doi.org/10.1080/16226510590915800
Abstract
Land application of biosolids to improve agricultural productivity is a cost-effective approach for resource recovery. Unfortunately, municipal biosolids often contain high concentrations of heavy metals, including zinc and copper. In this study, a co-cropping technique was investigated using a known zinc hyperaccumulator, Sedum alfredii, with a grain crop, Zea mays. After a 3-mo growth trial, the results indicate that when Z. mays is co-cropped with S. alfredii, heavy metals accumulated in the grains were significantly reduced when compared to monoculture cropping. Co-cropping improved the growth of both plant species. In addition, the biosolids maintained stable pH, N-P-K concentrations, germination potential, and water content after the plant treatment, regardless of the plant species used in the trial. In conclusion, co-cropping with hyperacumulators may be an effective approach to reducing the risk of contaminant uptake in edible crops.Keywords
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