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Retrospective Theses and Dissertations

Environmental Sciences

1993

Biochemistry

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Full-Text Articles in Life Sciences

Paired Prairie And Cultivated Soils: Soluble Organics And Nitrogen Dynamics , Thomas Henry Deluca Jan 1993

Paired Prairie And Cultivated Soils: Soluble Organics And Nitrogen Dynamics , Thomas Henry Deluca

Retrospective Theses and Dissertations

Nitrate contamination of water resources in the Midwestern U.S. is largely a result of conventional agricultural practices. In contrast, soils of prairie ecosystems do not accumulate NO[subscript]3 because of rapid NO[subscript]3 assimilation by plants and microbes. Microbial NO[subscript]3 assimilation requires a readily available C source; however, there is little known regarding available C in soils. The ability of prairie soils to recycle NO[subscript]3 makes the prairie ecosystem a useful model in N cycle studies designed to develop agricultural systems that minimize N loss;I performed field and laboratory studies on paired ...