Articles | Volume 8, issue 1
SOIL, 8, 409–419, 2022
https://doi.org/10.5194/soil-8-409-2022
SOIL, 8, 409–419, 2022
https://doi.org/10.5194/soil-8-409-2022
Original research article
31 May 2022
Original research article | 31 May 2022

The application of biochar and oyster shell reduced cadmium uptake by crops and modified soil fertility and enzyme activities in contaminated soil

Bin Wu et al.

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Cited articles

Abd El-Azeem, S. A. M., Ahmad, M., Usman, A. R. A., Kim, K.-R., Oh, S.-E., Lee, S. S., and Ok, Y. S.: Changes of biochemical properties and heavy metal bioavailability in soil treated with natural liming materials, Environ. Earth. Sci., 70, 3411–3420, https://doi.org/10.1007/s12665-013-2410-3, 2013. 
Ameloot, N., Sleutel, S., Case, S., Alberti, G., Mcnamara, N. P., Zavalloni, C., Vervisch, B., Vedove, G. D., and Neve, S. D.: C mineralization and microbial activity in four biochar field experiments several years after incorporation, Soil Biol. Biochem., 78, 195–203, https://doi.org/10.1016/j.soilbio.2014.08.004, 2014. 
Benefield, C. B., Howard, P. J. A., and Howard, D. M.: The estimation of dehydrogenase activity in soil, Soil Biol. Biochem., 9, 67–70, https://doi.org/10.1016/0038-0717(77)90063-3, 1977. 
Bolan, N., Kunhikrishnan, A., Thangarajan, R., Kumpiene, J., Park, J., Makino, T., Kirkham, M. B., and Scheckel, K.: Remediation of heavy metal(loid)s contaminated soils – To mobilize or to immobilize?, J. Hazard. Mater., 266, 141–166, https://doi.org/10.1016/j.jhazmat.2013.12.018, 2014. 
Campos, J. A., Peco, J. D., and García-Noguero, E.: Antigerminative comparison between naturally occurring naphthoquinones and commercial pesticides. Soil dehydrogenase activity used as bioindicator to test soil toxicity, Sci. Total. Environ., 694, 133672, https://doi.org/10.1016/j.scitotenv.2019.133672, 2019. 
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Short summary
Cadmium (Cd) contamination in soil has severely threatened human health. In this study, we investigated the possibility of applying oyster shell and biochar to reduce Cd uptake by crops and improve soil fertility and enzyme activities in field experiments under rice–oilseed rape rotation, which provided an economical and effective pathway to achieving an in situ remediation of the Cd-contaminated farmland.