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Creator:: Dughri, Muktar H.
Abstract:: Complementary methods of strain identification were sought to delineate the composition of the population of Rhizobium trifolii found in nodules of Trifolium subterraneum L. when exposed to an Abiqua silty clay loam (Cumulic Ultic Haploxeroll) containing a resident population of R. trifolii. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDSPAGE) was...
Resource Type:: Dissertation
Full Text:: indigenous population nodulated T. subterraneum L. cv. Mt. Barker. Representatives of serogroup 6 occupied

Creator:: Jenkins, Michael B.
Abstract:: Agronomic and microbiological studies were conducted on "Anchor" alfalfa (Medicago sativa L.) established from uninoculated seed on three Aridisols in central Oregon. Significant responses to 230 Kg N per ha (NH₄NO₃), which was applied in mid-April and after each first and second harvests, were observed in yield parameters of the...
Resource Type:: Dissertation
Full Text:: 1 of soil correlated significantly with decreasing soil pH. Though Vincent (1954) indicated that R

Creator:: Busse, Matt D.
Abstract:: This thesis presents novel findings regarding symbiotic, physiological, and antigenic characteristics of representatives from an indigenous soil-borne population of Rhizobium meliloti. Nodules were sampled from 'Vernal', 'Anchor', and 'Saranac' alfalfa, and the isolates analyzed serologically. Rhizobium meliloti serogroup 31 was identified as a dominant nodule occupant, with a greater and...
Resource Type:: Dissertation
Full Text:: observations of rhizobia free soils and soils sparsely populated with symbiotically inferior strains (Vincent

Creator:: Almendras, Angela S.
Abstract:: Previous research had identified four serogroups of Rhizobium trifolii indigenous to Abiqua soil (fine, mixed, mesic, Cumulic Ultic Haploxerolls). Nodulation of subterranean clover (Trifolium, subterraneum L.) by two of the serogroups, 6 and 36, was influenced by the application of CaC0₃ to the soil. The studies described in this thesis...
Resource Type:: Dissertation
Full Text:: questions; B. Valdivia, M. Giron, L. Ibay, T. Villamayor and R.M. Ouano for their help in various ways; S

Creator:: Leung, Kam-tin
Resource Type:: Dissertation
Full Text:: T. subterraneum L. cv. 'Nangeela' between 1987 and 1990. Page 29 30 2.3 Serotypic distribution

Creator:: Strain, Steven R.
Resource Type:: Dissertation
Full Text:: , CV, CT) of the two biovars (V and T) on two field sites (A and C) in Oregon, and from populations of

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