Biochar concomitantly increases simazine sorption in sandy loam soil and lowers its dissipation

Hongguang Cheng, Davey L. Jones, Paul Hill, Mohd Saufi Bastami

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Biochar application has been receiving much attention as pesticide pollution mitigator because it reduces harmful chemicals. However, direct comparisons between the effect of biochar and straw on the simazine fate in soils remain poorly understood. We explored the impact of biochars and straw on the simazine behavior in a soil using a 14C labeling approach. Biochar was produced by the thermal treatment of wheat straw at four contrasting temperatures (250, 350, 450 and 550°C) and was incorporated into a sandy loam soil. The sorption of simazine in the biochar soil from 83.9% to 87.5% was significantly higher than 43.0% in the unamended soil and 35.7% in the soil amended with unprocessed straw, thus resulting in low samizine leaching from 21.8% to 42.6% in the biochar soil. However, biochar application suppressed the simazine decomposition, which is contrast in the straw soil. Furthermore, the biogeochemical behavior of simazine varied with the pyrolysis temperature. These results indicate biochar application can significantly increase simazine adsorption and reduce leaching, which is benefit to the environmental pollution. In conclusion, the simazine behaviors in the soil are strongly influenced by the biochar properties. In comparison to straw, biochar has potential to mitigate simazine pollution.

Original languageEnglish
Pages (from-to)1082-1092
Number of pages11
JournalArchives of Agronomy and Soil Science
Issue number8
Publication statusPublished - 3 Jul 2017
Externally publishedYes


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