Index Catalog // ScholarsArchive@OSU

Effects of single and simultaneous challenges using DDT and a nuclear polyhedrosis virus against the variegated cutwork, Peridroma saucia (Hübner)

Creator:: Harper, James Douglas
Abstract:: A study of mortality, food consumption, food utilization, and polyhedral production following single and simultaneous challenges of the variegated cutworm, Peridroma saucia (Hubner), with DDT and a nuclear polyhedrosis virus was made. Fourth instar larvae were challenged topically with three levels of DDT and per os with three levels of...
Resource Type:: Dissertation
Full Text:: : EFFECTS OF SINGLE AND SIMULTANEOUS CHALLENGES USING DDT AND A NUCLEAR POLYHEDROSIS VIRUS AGAINST THE

Distribution and Ecological roles of arthropods in dead woody materials of ponderosa pine forests, northern California

Creator:: Lemieux, Jeffrey P.
Abstract:: This dissertation describes arthropod responses to and effects on decay processes in ponderosa pine, a dominant forest canopy tree in northern California. We used both descriptive and experimental field techniques to establish how arthropod assemblages depend on and are important to the disintegration of woody structures in forests of this...
Resource Type:: Dissertation
Full Text:: Ecological Roles of Arthropods in Dead Woody Materials of Ponderosa Pine Forests, Northern California

A survey of alfalfa pollinators and polination in the San Joaquin Valley of California with emphasis on establishment of the alkali bee

Creator:: Torchio, Philip F.
Abstract:: The study involves the establishment, management, and behavioral observations of Nomia melanderi Cockerell and Megachile rotundata (Fabricius) in California, a survey of native bees within western Fresno County, a determination of selfing and/or parthenocarpy in two fields of alfalfa, and observations on the honeybee as an alfalfa pollinator. The alkali...
Resource Type:: Masters Thesis
Full Text:: nesting sites were constructed during the establishment program. Details of materials used during

Use of petroleum oils to prevent spread of stylet-borne viruses by aphids

Creator:: Ascerno, Mark E.
Abstract:: The use of petroleum oil prevented, to varying degrees: the transmission of three stylet-borne viruses in three different crops. The use of oils resulted in a marked improvement in the number of lily bulbs harvested from treated plots as compared to the number of lily bulbs harvested from untreated plots....
Resource Type:: Masters Thesis
Full Text:: SPRAYS FOR THE PREVENTION OF VIRUS SPREAD IN LILIES 6 Materials and Methods 6 Results 8 Discussion

Transmission variation and loss of aphid transmissibility of bean yellow mosaic virus

Creator:: Kamm, James A.
Abstract:: Several bean yellow mosaic virus (BYMV) strains, presumably not transmissible by aphids, were studied to determine the biological and environmental conditions which would possibly result in aphid transmission of these strains. Investigations were made to study the effect of different aphid rearing conditions on the transmission frequency of BYMV. Also,...
Resource Type:: Dissertation
Full Text:: Transmission Variation and Loss of Aphid Transmissibility

The role of bees in pollinating alfalfa in Southern Alberta

Creator:: Hobbs, Gordon Andrew
Resource Type:: Dissertation
Full Text:: The role of bees in pollinating alfalfa in Southern

Oil sprays to prevent the spread of bean yellow mosaic virus (BYMV) by aphids

Creator:: Vargas, Timothy Carl
Abstract:: The influence of oil sprays on the field spread of the aphid-borne bean yellow mosaic virus (BYMV) in bean was studied in 1972 and 1973. Oil sprays failed to significantly reduce virus spread in the 1972 BYMV experiment. However, the data did suggest that the efficiency of the oil sprays...
Resource Type:: Masters Thesis
Full Text:: Oil Action 11 MATERIALS AND METHODS 15 Aphid Trapping - 19 72 and 1973 15 Incidence of BYMV in

The toxic effects of ronnel fed to rate for the control of Xenopsylla cheopis (Rothsch.) (Siphonaptera, Pulicidae)

Creator:: O'Berg, Allan Gillis
Resource Type:: Masters Thesis
Full Text:: , . , , , . . . , . , . . , . . . . . . . . e , . . Review of Literature , , . . . . .. . . . . . . . . . . . . . . . . . . . . Materials

Aphid transmission of an undescribed virus from sweet cherry

Creator:: Smith, Gordon Kent
Resource Type:: Masters Thesis
Full Text:: MATERIALS AND METHODS General Definition of Terrns . Materials Methods Aphid Inoculation Me chanical

The effect of concentration of the toxicity of acaricides to the two-spotted spider mite, Tetranychus bimaculatus Harvey

Creator:: Downing, R. S. (Ralph Strang), 1920-
Resource Type:: Masters Thesis
Full Text:: concentrate sprayers have been used in these experiments and on the bsis of volume of spray material per

ScholarsArchive@OSU

Effects of single and simultaneous challenges using DDT and a nuclear polyhedrosis virus against the variegated cutwork, Peridroma saucia (Hübner)

Distribution and Ecological roles of arthropods in dead woody materials of ponderosa pine forests, northern California

A survey of alfalfa pollinators and polination in the San Joaquin Valley of California with emphasis on establishment of the alkali bee

Use of petroleum oils to prevent spread of stylet-borne viruses by aphids

Transmission variation and loss of aphid transmissibility of bean yellow mosaic virus

The role of bees in pollinating alfalfa in Southern Alberta

Oil sprays to prevent the spread of bean yellow mosaic virus (BYMV) by aphids

The toxic effects of ronnel fed to rate for the control of Xenopsylla cheopis (Rothsch.) (Siphonaptera, Pulicidae)

Aphid transmission of an undescribed virus from sweet cherry

The effect of concentration of the toxicity of acaricides to the two-spotted spider mite, Tetranychus bimaculatus Harvey

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