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8018273 
Journal Article 
Effects of Sludge Amendments on Heavy Metals Accumulation and Crop Yields 
Liang, LN; Huang, YX; Li, J; Xu, ZH; Zhang, LL 
2010 
Yes 
Journal of Residuals Science and Technology
ISSN: 1544-8053 
7 
1 
1-6 
English 
WOS:000273660700001 
The application of sludge as fertilizer to improve soil properties is generally considered to be one of the best practices around the world. It is benefit from the sequestration of organic carbon and nutrients in the soil, but again brings negative effects as heavy metal pollution when using those wastes. The aim of the study was to evaluate the effects of sludge application on heavy metals accumulation and crop yields in winter wheat-corn rotation system in north China plain. A 3-year field study was carried out to investigate heavy metals of Mn, Cu, Zn, Pb and Cd concentration and crop yields among different sewage sludge treatments, as dewatered raw sludge, sludge compost and sludge compound fertilizer since 2002. The research indicated that three sludge amendments could raise the contents of soil total organic matter and total nitrogen; Compared to CK and chemical fertilizer treatment, sludge amendment had higher concentration of Mn, Cu in the soil and higher Zn in wheat grain. Compared to the chemical fertilizer treatment, the use of sludge had no significant effects on the yield of both wheat and corn. 
soil; compost