Index Catalog // ScholarsArchive@OSU

Relationships of six saprozoic nematodes and a nitrogen-fixing bacterium, Rhizobium japonicum (Kirch.) Buchanan

Creator:: Sontirat, Suebsak
Abstract:: Relationships of six species of saprozoic nematodes, Pristionchus lheriteiri (Maupas, 1919) Paramonov; Panagrolaimus subelongatus (Cobb, 1914) Thorne, 1937; Cephalobus persegnis Bastian 1865; Pelodera (Rhabditis) lambdiensis (Maupas, 1919) Dougherty, 1953; Rhabditis sp. I and Pelodera chitwoodi (Bassen, 1940) Dougherty, 1955 and a nitrogen-fixing bacterium, Rhizobium japonicum (Kirchner, 1895) Buchanan, 1926 were...
Resource Type:: Dissertation
Full Text:: papers, dealing mostly with nematode-fungus interactions, are developing a new branch of plant

The influence of host nutrition on the development of xiphinema americanum

Creator:: Nigh, Edward L.
Resource Type:: Dissertation
Full Text:: composition of the soil environment can in- fluence hatching and survival of a plant parasitic nematode, has

The interactions of Pratylenchus penetrans with host plants, Longidorus elongatus and Verticillium dahliae

Creator:: Yorston, John McKay
Abstract:: The root-lesion nematode, Pratylenchus penetrans (Cobb 1917). Filipjev and Shuurmans Stekhoven, 1941, is widely distributed throughout Oregon and other temperate zones of the world. Economically it is probably the most important plant parasitic nematode in Oregon because of its abundance, wide host range of economic plants and interactions with other...
Resource Type:: Dissertation

Studies of northern root-knot nematode (Meloidogyne hapla, Chitwood 1949) biotypes and some factors associated with their biology and pathogenicity

Creator:: Ogbuji, Rufus Omez, 1941-
Abstract:: Root-knot nematodes were among the earliest plant-parasitic nematodes to be recognized. Before 1949, they were considered as the one species Heterodera marioni (Cornu 1887) Goodey 1932. In 1949 Chitwood completed a taxonomic study of the root-knot nematodes and placed them in a separate genus Meloidogyne. Economically they are one of...
Resource Type:: Dissertation
Full Text:: a plant usually considered very susceptible to that same nematode species. The evolution of new

Bionomics of the clover cyst nematode, Heterodera trifolii (Goffart, 1932) Oostenbrink, 1939 (Nematoda: Heteroderidae)

Creator:: Sen, Arun Kumar
Resource Type:: Masters Thesis
Full Text:: plant roots. The first free - living nematode was discovered by Borellus in 1656, and named

Population dynamics, distribution, and control of nematodes in highbush blueberries

Creator:: Schroeder, Jan-Marie
Abstract:: Fluctuations in population density of Pratylenchus sp., Trichodorus sp., and Xiphinema americanum s. 1. in three blueberry fields were determined monthly for one year. Pratylenchus densities were greatest in August and least in October. Three distinct periods of population growth occurred; during January, April, and between June and August. Trichodorus...
Resource Type:: Masters Thesis
Full Text:: INTRODUCTION 1 The Blueberry Host Plant 2 Nematode Distribution 3 Pratylenchus penetrans 7 Xiphinema

Population dynamics, extraction, and response to nematicide of three plant parasitic nematodes on peppermint (mentha piperita L.)

Creator:: Merrifield, Kathryn J.
Abstract:: The efficiencies of wet sieving/sucrose centrifugation (WS/SC) recovery of Pratylenchus penetrans (59 %), Paratylenchus sp., (80 %), and Criconemella xenoplax (66 %) were established. Baermann funnels (BF) recovered significantly more P. penetrans (p = 0.01) and significantly less (p = 0.01) C. xenoplax than did WS/SC. While densities of P....
Resource Type:: Masters Thesis
Full Text:: nematode population pressure on the plant growing in that volume of soil. Therefore, endoparasitic

Response to fenamiphos, extraction techniques and population dynamics of Pratylenchus penetrans on western Oregon red raspberry

Creator:: Lolas, Mauricio
Abstract:: The effects of fenamiphos on soil and root populations of Pratylenchus penetrans were evaluated in four red raspberry cv. Willamette fields in Northwestern Oregon. Field 1 was a silty clay loam with 53% organic matter (OM). Field 2 and 3 were silty loam soils with 3.25 and 2.55% OM, respectively...
Resource Type:: Masters Thesis
Full Text:: Pratylenchus spp. and other plant- parasitic nematode populations. In Nigeria, numbers of Helicotylenchus

Facilitating plant-parasitic nematode management decisions for Washington Vitis vinifera growers : determining the spatial distribution of plant-parasitic nematodes and the host status of Vitis spp. to Meloidogyne hapla

Creator:: Howland, Amanda D.
Abstract:: A major constraint to the production of self-rooted wine grapes (Vitis vinifera) in eastern Washington is plant-parasitic nematodes. Plant-parasitic nematodes can impact grape productivity by limiting water and nutrient uptake, educing physiological changes, and extracting plant nutrients from roots, thereby reducing root biomass, plant vigor, and yield. The most commonly...
Resource Type:: Masters Thesis
Full Text:: : Facilitating Plant-parasitic Nematode Management Decisions for Washington Vitis vinifera Growers: Determining

A contribution toward a bibliography of Oregon botany with notes on the botanical explorers of the state

Creator:: Osborn, Katherine H., 1906-
Resource Type:: Masters Thesis
Full Text:: Contribution toward a bibliography of Oregon botany with

ScholarsArchive@OSU

Relationships of six saprozoic nematodes and a nitrogen-fixing bacterium, Rhizobium japonicum (Kirch.) Buchanan

The influence of host nutrition on the development of xiphinema americanum

The interactions of Pratylenchus penetrans with host plants, Longidorus elongatus and Verticillium dahliae

Studies of northern root-knot nematode (Meloidogyne hapla, Chitwood 1949) biotypes and some factors associated with their biology and pathogenicity

Bionomics of the clover cyst nematode, Heterodera trifolii (Goffart, 1932) Oostenbrink, 1939 (Nematoda: Heteroderidae)

Population dynamics, distribution, and control of nematodes in highbush blueberries

Population dynamics, extraction, and response to nematicide of three plant parasitic nematodes on peppermint (mentha piperita L.)

Response to fenamiphos, extraction techniques and population dynamics of Pratylenchus penetrans on western Oregon red raspberry

Facilitating plant-parasitic nematode management decisions for Washington Vitis vinifera growers : determining the spatial distribution of plant-parasitic nematodes and the host status of Vitis spp. to Meloidogyne hapla

A contribution toward a bibliography of Oregon botany with notes on the botanical explorers of the state

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