A piece of filter paper was also placed to prevent further soil loss from the base of the column. Biochar was mixed at the rate of 5% (w/w) in sandy loam soil whereas, nonbiochar amended columns served as control.
A piece of filter paper was also placed to preventfurther soil loss from the base of the column. Biochar wasmixed at the rate of 5% (w/w) in sandy loam soil whereas, nonbiocharamended columns served as control.