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Spatial Distribution of Soil Carbon and Nitrogen Pools under Grazed Tall Fescue

USDA-ARS, J. Phil Campbell Sr. Natural Resources Conservation Center, 1420 Experiment Station Rd., Watkinsville, GA 30677–2373 USA

View larger version (23K): [in a new window]   Fig. 1 Soil bulk density (a) as affected by depth and (b) averaged across depths in response to distance from shade or water sources. Error bars are LSD at P 0.05 within a soil depth

View larger version (28K): [in a new window]   Fig. 2 Soil organic C (a) as affected by depth and (b) soil organic C and total N averaged across depths in response to distance from shade or water sources. Error bars are LSD at P 0.05 within a soil depth

View larger version (28K): [in a new window]   Fig. 3 Particulate organic C (a) as affected by depth and (b) particulate organic C and N averaged across depths in response to distance from shade or water sources. Error bars are LSD at P 0.05 within a soil depth

View larger version (31K): [in a new window]   Fig. 4 Particulate organic N/total N ratio (a) as affected by depth and (b) particulate/soil organic C and N averaged across depths in response to distance from shade or water sources. Error bars are LSD at P 0.05 within a soil depth

View larger version (25K): [in a new window]   Fig. 5 Soil microbial biomass C (a) as affected by depth and (b) averaged across depths in response to distance from shade or water sources. Error bars are LSD at P 0.05 within a soil depth

View larger version (27K): [in a new window]   Fig. 6 Soil (a) inorganic N and (b) net potential N mineralization as affected by depth in response to distance from shade or water sources. Error bars are LSD at P 0.05 within a soil depth

View larger version (20K): [in a new window]   Fig. 7 Soil inorganic N as affected by soil depth and fertilization level. **, *** Significant at the 0.01 and 0.001 levels of probability, respectively