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Evolution of phytotoxicity during the active phase of co-composting of chicken manure, tobacco powder and mushroom substrate

Authors :
Jing Yuan
Yan Liu
Danyang Li
Guoying Wang
Yilin Kong
Guoxue Li
Xuehua Zhang
Source :
Waste Management. 114:25-32
Publication Year :
2020
Publisher :
Elsevier BV, 2020.

Abstract

This study systematically investigated the phytotoxicity of chicken manure co-composted with tobacco powder and mushroom substrate on seed germination during active phase of composting. All compost products met the sanitation requirements specified in the Chinese national standard; however, only the mushroom substrate compost satisfied the maturity standard. From day 28, the composting entered the end of active phase and the concentrations of K+, Zn2+, Na+, Cu2+ and Fe3+ decreased gradually. Redundancy analysis indicated that the germination index, catalase and peroxidase activities was positively correlated with K+, Zn2+, Na+, Cu2+, Fe3+ and NO3--N, and negatively correlated with NH4+-N, Mg2+ and Ca2+, among which the most significant ions were Fe3+, Mg2+ and Zn2+ for all treatments. The malondialdehyde concentration of germinated seeds had adverse correlation with the above ions parameters.

Details

ISSN :
0956053X
Volume :
114
Database :
OpenAIRE
Journal :
Waste Management
Accession number :
edsair.doi.dedup.....b28507e884a0d34d082d94b4a9206845
Full Text :
https://doi.org/10.1016/j.wasman.2020.06.034