Figure 2

Carbon mineralization rate (mg CO2-C kg−1 soil day−1) as affected by zinc oxide (nZnO) and rice-straw derived biochar after 24d (panels A, C, E) & 64d (B, D, F) of incubation. C mineralization in different BC, nZnO and BC + nZnO treatments for a given date have been plotted in different panels (e.g. panels A, C, E) for the purpose of simplification.