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Title:   Author  item
                                            Ritchie, Jerryitem
                                            McCarty, Gregory
  Submitted to: International Aquaculture Meeting
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 5/15/2001
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary:
                                Technical Abstract: Great interest has developed in recent years for using agricultural soils to sequester carbon. The purpose of this study was to determine soil carbon distribution patterns on agricultural watersheds of a small first-order stream using Cesium-137.  Four watersheds were sampled to determine the effects of the different management treatments (conventional farming,  precision farming, and animal waste treatments) on soil carbon content and distribution.  Profiles of  soils in these watersheds and an adjacent riparian zone were collected in 5 cm increments and the concentration of Cesium-137 and carbon in each increment was determined.  Carbon and Cesium-137 content on the soils were strongly correlated (r=0.85).  Carbon content of the 0-5 cm layer of the soil profiles ranged from 0.8 to 3.0 % with an average of 1.7 plus or minus 0.6 %. Carbon content of the riparian profiles in the 0-5 cm layer ranged from 2.4 to 14.4 % with an average of  8.0 plus or minus 4.1 %.  These data suggest that measurements of Cesium-137 in the surface soils can be used to determine carbon distribution patterns in surface soil of agricultural areas.


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