FIG. 4. (a) Carbon mineralization rates by whole and interior regions of aggregates 4.0 to 6.3 mm in diameter, from a Hoytville clay loam soil managed as conventionally tilled (CT) and no-till (NT). (b) Differential ratios of C mineralization rates between interior and whole aggregates. Bars are the standard errors of three field replicates, n = 45.