Abstract:
Soil pesticide contamination induced by modern agriculture has become a serious global
issue. Its uncontrolled and inefficient application is among the main reasons for their enrichment in
plants and animals subsequently transferred to humans and providing a public health risk. Biochar
as a renewable and economical carbonaceous material provides a natural solution for immobilizing
pesticides and improving soil health. The biochar impact in agricultural contaminated soil is governed
by various factors such as the physico-chemical properties of biochar, pyrolysis, soil conditions, and
the application method, which can lead to significant gaps in the removal or mitigation of toxic
substances. The current study summarizes the negative effects of pesticide use and the advantages
of biochar according to other remediation techniques, succeeded by the mechanism and controlling
factors on minimizing pesticide leaching and bioavailability in soil. In addition, the role of biochar
on fundamental processes of adsorption, desorption, biodegradation, and leaching is discussed.
Ultimately, the major future research regulation and key strategies that are fundamental for pesticidecontaminated
soil remediation are proposed.
