Fig. 3. Cumulative infiltration (cm) and standard error bars during a 30-min simulated rainfall during three trials (166 mm, winter of 1994; 159 mm, summer of 1994; 167 mm, winter of 1995) for two Stellar soil cover conditions treated with 90 dry Mg ha^–1 of biosolids on four different occasions (Batch 1, summer of 1993; Batch 2, winter of 1994; Batch 3, summer of 1994; and Batch 4, winter of 1995): (A) bare Stellar soil and (B) vegetated Stellar soil.