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Fig. 5. Total intraaggregate porosities of whole aggregates subjected to reducing amounts of tillage for soil aggregates, 6.3 to 9.5, 4 to 6.3, and 2 to 4 mm across, sampled from (A) Hoytville and (B) Wooster soil series. Uppercase letters indicate significant differences among aggregate size fractions and lowercase letters indicate significant differences among management systems at P < 0.05. Bars designate standard errors of three field replicates. CT, conventional tillage; NF, native forest; NT, no tillage.
