Ameliorating chemical properties of acid soils with biochar-A review

Abstract

Amelioration of acid soil is a challenging task for the scientific community to mitigate the rising concentration of H+ and Al3+ ion. Biochar used as a liming material in acid soil due to its high soil organic matter contents and soil fertility. Therefore, we reviewed the available information about the chemical properties of biochar as affected by different combustion procedures, and the effects of its application in agricultural fields on nutrient retention and crop production. Global production of black carbon has been reported between 50 and 270 Tg yr–1, with as much as 80% of this remaining as residues in the soil. Biochar mitigate the elevated atmospheric CO2 due to its slow decomposition rate in soil. Biochar with combination of some fertilizers can produce significant benefits when applied to agricultural.