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The influences of associated salts on corn root development and the availability of banded phosphatesKussow, Wayne R. January 1967 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1967. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Availability of trace elements in fusions with sulfurSharpee, Kenneth Wayne, 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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Field study of the effects of liquid digested sewage sludge on agricultural landTaylor, David. January 1981 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1981. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 76-82).
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An intact-plant screening technique and its use in studying variation and physiology of phosphorus uptake and translocation in strains of tomatoHochmuth, George J. January 1980 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1980. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 109-124).
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The influence of associated salts on the response of corn and oats to various phosphate compoundsKussow, Wayne Robert. January 1963 (has links)
Thesis (M.S.)--University of Wisconsin, 1963. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 97-101).
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Nutrient management on golf courses in DelawareSprinkle, Amy Lyn. January 2005 (has links)
Thesis (M.S.)--University of Delaware, 2005. / Principal faculty advisor: Gregory D. Binford, Dept. of Plant & Soil Sciences. Includes bibliographical references.
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The effects of nitrogen fertilization on Phytophthora rot of soybeans and on its causal pathogen, Phytophthora megasperma var. sojae /Canaday, Craig Holycross, January 1979 (has links)
Thesis (M.S.)--Ohio State University, 1979. / Includes bibliographical references (leaves 78-87). Available online via OhioLINK's ETD Center
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Experimental effects of ammonium on eelgrass (Zostera marina L.) shoot density in Humboldt Bay, California /Tennant, Ginger. January 1900 (has links)
Thesis (M.A.)--Humboldt State University, 2006. / Includes bibliographical references (leaves 74-86). Also available via Humboldt Digital Scholar.
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Carbon and nitrogen allocation patterns of 2-0 Douglas-fir seedlings following nitrogen fertilization in the autumn /Margolis, Hank A. January 1985 (has links)
Thesis (Ph. D.)--Oregon State University, 1986. / Typescript (photocopy). Includes bibliographies. Also available on the World Wide Web.
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Nutrient uptake by surface and subsurface drip irrigated cottonZarzah, Mabrouk., Zarzah, Mabrouk. January 1986 (has links)
Field experiments to compare absorption of nutrients by cotton plant (Gossvpium hirsutum L. Var. Deltapine 62) and their distribution in soil under surface and subsurface drip systems were conducted in 1984 and 1985 at the Campus Agricultural Center, University of Arizona in Agua fine sandy loam soil (Typic Torriflvents). The mixed fertilizer solution with labeled nitrogen-source was injected into surface and subsurface drip treatments in equal amounts. There were no significant differences among surface and subsurface drip treatments detected with respect to total nitrogen, phosphorus, potassium and zinc uptake by plants because of equal availability of nitrogen under both drip systems and sufficient initial levels of the other nutrients were found in this soil. Fertilizer application significantly increased total nitrogen, phosphorus, potassium and zinc uptake by cotton plants because N promoted more vegetative growth and therefore more dry matter production was obtained. Under all drip treatments and both labeled nitrogen sources, plants growing on unfertilized rows absorbed nitrogen-15 fertilizer mainly because of the extension of roots and some lateral movement of nitrate to the unfertilized rows. Significant differencs among surface and subsurface drip treatments were not detected with respect to absorption of nitrogen-15 and percentage of fertilizer nitrogen in plants. Consistent differences among ammonium (N-16) and nitrate (N-15) labeled sources were not observed with respect to percentage of fertilizer nitrogen in plants. The plant recovery of applied nitrogen was higher with the difference method than with the tracer method because the nitrogen fertilizer produced effects in the soil or on the ability of the plants to obtain soil nitrogen that did not occur in the unfertilized rows. Consistent differences between drip treatments were not observed with respect to the final nitrate, ammonium, phosphorus, potassium, zinc levels and total soluble salts in the soil horizontally or vertically. The range of the residual fertilizer nitrogen in the soil after the first growing season was 7 to 28%.
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