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Retrospective Theses and Dissertations

Environmental Sciences

1993

Soil management

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Fungal Contributions To Soil Aggregation And Soil Quality , Neal Samuel Eash Jan 1993

Fungal Contributions To Soil Aggregation And Soil Quality , Neal Samuel Eash

Retrospective Theses and Dissertations

Conceptual models implicate the fungi as important mechanisms in soil aggregate formation but the lack of suitable assays for routine quantification of fungal biomass make validation of these models evasive. The objectives of these studies were threefold: (1) to evaluate the effectiveness of ergosterol as an indicator of fungal biomass; (2) to evaluate interrelationships between aggregate-forming processes induced by fungi and those caused by physical and chemical factors; (3) to evaluate potential soil quality indicators under different tillage and residue management systems. Objective 1 focused on determining the efficiency of recovering ergosterol from spiked soil samples and measuring ergosterol of ...