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Effect Of Landscape Position And Dairy Manure Addition On Bioavailable Forms Of Soil Phosphorus Using Enzyme Hydrolysis, Themis Mahalia Stone
Effect Of Landscape Position And Dairy Manure Addition On Bioavailable Forms Of Soil Phosphorus Using Enzyme Hydrolysis, Themis Mahalia Stone
Masters Theses
Bioavailable phosphorus (P) has traditionally been measured as inorganic orthophosphate (PO4) while organic P (Po) has been considered of limited relevance to short-term biological consumption. However, enzymes secreted by bacteria and fungi which serve to mineralize Po are ubiquitous in the environment and may contribute significant bioavailable P over time. In order to assess environmentally-relevant, potentially bioavailable P in soils with added dairy wastes, microcosms of identical soil series but differing management histories and landscape positions were incubated at 24 C° for three weeks. Subsamples were taken weekly from microcosms and analyzed by: 1) Mehlich-3 …