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Creator:: Lopez-Jurado, Gerardo
Abstract:: Field experiments were established in 1982 and 1983 on a Woodburn silt loam soil (Aquultic Argixeroll) to examine the effect of S fertilizer on dinitrogen fixation and dry matter yield of 10 week-old seedling alfalfa (Medicago sativa L. cv. 'Apollo'). Six levels of S fertilizer (0 to 67.2 kg S/ha)...
Resource Type:: Dissertation
Full Text:: Dinitrogen Fixation of Alfalfa (Medicago sativa L.) Abstract approved: Redacted for privacy David B

Creator:: Streeter, Donald J.
Abstract:: Centuries of continuous grain cropping in northern Africa have reduced N levels in soils to a degree such that agricultural production is now largely dependent upon nitrogen fertilizer. Through the identification of highly effective legume and Rhizobium strain combinations, the production of protein-rich livestock forage and green manure can be...
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for privacy Dr. David B. Hannaway Centuries of continuous grain cropping in northern

Creator:: Mao, Meiyu
Abstract:: Agrobacterium rhizogenes has been shown to cause root proliferation and increased water use efficiency in certain woody dicots. Root proliferation may be desirable in herbaceous legumes as a means of increasing potential sites for infection by Rhizobium species and subsequent nodulation and nitrogen fixation. Thus, A. rhizogenes was used to...
Resource Type:: Masters Thesis
Full Text:: Alfalfa Redacted for Privacy Abstract approved: Dr. David B. Hannaway Agrobacterium rhizogenes has been

Creator:: Shuler, Philip E.
Abstract:: The usefulness of preplant nitrogen (N) in establishing alfalfa in colder production areas has not been well characterized. This study was conducted to determine the effect of preplant N and soil temperature on yield, percent N derived from biological nitrogen fixation (PBNF), and shoot N concentration in alfalfa (Medicago sativa...
Resource Type:: Dissertation
Full Text:: : David 5. Hannaway The usefulness of preplant nitrogen (N) in estab- lishing alfalfa in colder

ScholarsArchive@OSU