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Fertilizer Source and Soil Aeration Effects on Runoff Volume and Quality

^a USDA-ARS, 1420 Experiment Station Rd., Watkinsville, GA, 30677
^b 3113 Miller Plant Sciences Bldg., Dep. of Crop & Soil Sciences, Univ. of Georgia, Athens, GA 30602
^c Central Georgia Research and Education Center, 1508 Godfrey Rd., NW, Eatonton, GA 31024

View larger version (32K): [in a new window]   Fig. 1. (a) Cumulative runoff volume and (b) cumulative dissolved reactive P (DRP) loss during 30 min of runoff from 1.5-m2 plots fertilized with broiler litter (BL) or inorganic fertilizer (IF), with or without soil aeration in April 2002. Vertical bars are standard errors.

View larger version (30K): [in a new window]   Fig. 2. Average cumulative runoff volume relative to dissolved reactive P (DRP) concentration in runoff for plots fertilized with broiler litter (BL) or inorganic fertilizer (IF), with or without soil aeration, in April 2002. Vertical bars are standard errors.

View larger version (29K): [in a new window]   Fig. 3. Average cumulative runoff volume relative to ammonium N (NH4–N) concentration in runoff for plots fertilized with broiler litter (BL) or inorganic fertilizer (IF), with or without soil aeration, in April 2002. Vertical bars are standard errors.