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The Global ETD Search service is a free service for researchers
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Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 10 of 2489 (0.038 seconds)Spelling suggestions: "subject:"phosphorus."" "subject:"aphosphorus.""
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THE FORMS AND FATE OF PHOSPHORUS UNDER VARIOUS FERTILIZATION AND TILLAGE PRACTICESCaldecott, Margaret 13 October 2009 (has links)
The use of phosphorus (P) in agricultural systems is necessary for proper plant growth and development. Proper management of P is critical to avoid surface and sub-surface water contamination. Studies have indicated that application rates of P and tillage can influence soil P forms and losses from agricultural land. Study 1 of this thesis considered how tillage could influence P concentrations in water after spring and fall applications of liquid swine manure. It was determined that incorporation of manure is the least resource intensive and most environmentally suitable tillage system in terms of reducing P losses.
Study 2 examined how the application of various P amendments applied at rates near or below plant removal for 4 years could influence soil P forms. Conclusions were that only inorganic fertilizers influenced soil test P (STP). In addition, labile soil P forms were affected by treatment, while organic and resistant fractions were not. / OMAFRA and Ontario Pork
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The effect of organic matter on the precipitation of phosphorus as ammonium phosphomolybdateGriffin, James LeRoy 05 1900 (has links)
No description available.
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Phosphorus metabolism of adolescent males as affected by different levels of protein and magnesium intakesGaddi, Blanca Liwanag, January 1968 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1968. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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The action of certain solvents on yellow phosphorusBellezza, James, January 1937 (has links)
Thesis (Ph. M.)--University of Wisconsin--Madison, 1937. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaf 21).
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Phosphate mobility in rural runoffSchroeder, David Carl, January 1900 (has links)
Thesis--Wisconsin. / Vita. Includes bibliographical references (leaves 120-122).
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Marine phosphorus geochemistryFroelich, Philip Nissen. January 1979 (has links)
Thesis (Ph. D.)--University of Rhode Island, 1979. / Includes bibliographical references (leaves 269-291).
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Empirical models of phosphorus in streams and lakesPrairie, Yves January 1987 (has links)
Note:
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Strength, fracture morphology, and polymorphic phase transformations in phosphate-bonded high-alumina refractory compositionsSoltani, Morteza 05 1900 (has links)
No description available.
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Calcium metabolism as affected by level of intakes of protein and calcium and level and form of phosphorusZemel, Michael B. January 1980 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1980. / Typescript. Vita. Includes bibliographical references.
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The precipitation of phosphorus by iron and aluminum as influenced by pH and pure organic substances.Bradley, Donald Bigelow 01 January 1951 (has links) (PDF)
No description available.
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