Available concentration (DTPA pH 7.3) of Cd (a), Pb (b) and Zn (c) in soil after jack bean (JB) and Mucuna aterrima (MA) cultivation according to biochar (BC) doses.
Available concentration (DTPA pH 7.3) of Cd (a), Pb (b) and Zn (c) in soil afterjack bean (JB) and Mucuna aterrima (MA) cultivation according to biochar (BC) doses.