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Filtering by: Has journal Molecular Ecology Advisor Hannaway, David B. Decade 1980-1989

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:

symbiotic association capable of fixing molecular nitrogen. The infection of the legume host's roots by a
Evaluation of a Rhizobium meliloti transconjugant for increased nodulation and biological nitrogen fixation in alfalfa

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:

molecular oxygen (02). In Rhizobium-legume symbioses, oxygen is trapped before it can reach the bacteria
Effect of sulfur on dinitrogen fixation of alfalfa (Medicago sativa L.)

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:

crop production (Stoskopt, 1981). The atmosphere provides a vast reservoir of molecular N2 (79 to 80