TY - JOUR
T1 - Effect of simultaneous establishment of Sedum alfredii and Zea mays on heavy metal accumulation in plants
AU - Xiaomei, Liu
AU - Qitang, Wu
AU - Banks, Margaret Katherine
PY - 2005/5/11
Y1 - 2005/5/11
N2 - 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.
AB - 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.
KW - Heavy metals
KW - Hyperaccumulation
KW - Phytoremediation
KW - Plant uptake
UR - http://www.scopus.com/inward/record.url?scp=17844410681&partnerID=8YFLogxK
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U2 - 10.1080/16226510590915800
DO - 10.1080/16226510590915800
M3 - Article
C2 - 15943243
AN - SCOPUS:17844410681
VL - 7
SP - 43
EP - 53
JO - International Journal of Phytoremediation
JF - International Journal of Phytoremediation
SN - 1522-6514
IS - 1
ER -