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Filtering by: Creator Rydrych, Donald J. Degree Field Crop Science

Evaluation of Rhizobium strains with three Mediterranean forage legumes for biological nitrogen fixation

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:

forage legumes for biological nitrogen fixation AN ABSTRACT OF THE THESIS OF Donald J. Streeter for
Ryegrass fluorescence expression during three generations of seed increase and its heritability among half-sib families

Creator:

Floyd, Donald J.

Abstract:

Seedling root fluorescence (SRF) has been used as a test in the USA since 1941 to discriminate Italian ryegrass (Lolium multiflorum Lam.) from perennial ryegrass (L. perenne L.). Generally, roots of Italian ryegrass fluorescece when exposed to ultraviolet light, while roots of perennial ryegrass do not. Presence of fluorescent seedlings...

Resource Type:

Dissertation

Full Text:

seed increase and its heritability among half-sib families AN ABSTRACT OF THE THESIS OF Donald J