Index Catalog // ScholarsArchive@OSU

AppleMgr, a prototype decision aid for apple pest management

Creator:: Haley, Sue
Abstract:: Computer decision aids can help integrate and apply diverse sources of information and expertise to problems of integrated pest management (IPM) in agriculture and forestry. AppleMgr combines a rule-based expert system with databases and spreadsheets in a prototype decision aid intended to be expanded and modified for use by extension...
Resource Type:: Dissertation
Full Text:: decision aid intended to be expanded and modified for use by extension workers in the Northwest U.S. The

A revision of the genus Notiphila Fallén (Diptera:Ephydridae) from America north of Mexico

Creator:: Mathis, Wayne N.
Abstract:: The North American species of the shore fly genus Notiphila Fallen were taxonomically revised. Over 13,000 specimens were examined from throughout the Nearctic Region and information relating to the biology of many species occurring in the West was gathered from both field and laboratory studies. Previously used characters were reevaluated;...
Resource Type:: Dissertation

The effect of competition on the population dynamics of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., in Oregon

Creator:: Schmitz, Richard Franklin
Abstract:: The effect of competition on the brood survival of the Douglas fir beetle Dendroctonus pseudotsugae Hopkins, in down or windthrown Douglas-fir Pseudotsuga menziesii (Mirb.) Franco was studied in the field and the laboratory. The investigation of the role of competition in the population dynamics of the beetle had four objectives:...
Resource Type:: Masters Thesis
Full Text:: extension by the presence of another brood. Note how extension of the larval mines trapped be tween the

Environmental biology of Endria inimica (Say) (Homoptera:Homoptera:Cicadellidae)

Creator:: Gustin, Ralph Donald
Abstract:: The leafhopper vector, Endria inimica (Say), of wheat striate mosaic virus is a bivoltine insect which overwinters as second generation eggs in a state of diapause. Under experimental conditions, egg diapause resulted from rearing females under short days (12L:12D) and diapause was averted by rearing females under long days (15L:9D)....
Resource Type:: Dissertation
Full Text:: , biology, and virus transmission. United States Department of Agriculture. Technical Bulletin 1382. 386 p

Visual and olfactory responses of the horn fly, Haematobia irritans (Linn.)

Creator:: Hargett, Louie Thomas, 1932-
Resource Type:: Dissertation

Host selection, reproductive biology, host-specific development and mortality of the codling moth, Cydia pomonella (L.) (Lepidoptera: Torticidae), in apple and pear

Creator:: Marti, Santiago Marti
Abstract:: The biology and behavior of the codling moth, Cydia pomonella (L.), was studied to determine factors responsible for differences in susceptibility to moth damage among apple and pear cultivars. In release experiments, codling moth adults were intercepted in significantly greater numbers in host (apple, pear) than in non-host (maple) trees,...
Resource Type:: Dissertation

A study of relationships of four insects to heating in stored grain

Creator:: Eighme, Lloyd Elwyn
Abstract:: This study was conducted to determine the effects of insect infestation on areas of heating in stored grain, and to demonstrate the ability of four species of insects to initiate or promote the spread of these heating areas. The four insects used were the granary weevil Sitophilus granarius (L.), the...
Resource Type:: Dissertation
Full Text:: which was mounted on the end of the box. An extension of the constantan wire and a copper wire from

The biology of the brown orchard mite, Bryobia arborea Morgan and Anderson (Acarina : Tetranychidae) on stone fruit trees in The Dalles, Oregon area

Creator:: Burts, Everett C.
Resource Type:: Masters Thesis
Full Text:: o.$27 mm.J foreleg {excluding coxa and tarsal claws) o.$4.3 to 0 . 659 mm• . (50 specimens

Studies on Heterostylum robustum (Osten Sacken) (Diptera : Bombyliidae), a parasite of Nomia melanderi

Creator:: Eppley, Richard Keith
Abstract:: Heterostylum robustum (Osten Sacken) is the principal parasite of the alkali bee, Nomia melanderi Ckll., one of the most efficient pollinators of alfalfa in the western United States. The purpose of the study was to determine the incidence of parasitism and to investigate the biology of H. robustum. The fly...
Resource Type:: Masters Thesis

Ecology of mites on pomaceous fruit trees and related wild hosts in Hood River Valley

Creator:: Jorgensen, Clive Darrel
Abstract:: The ecological interrelationships of mites occurring in and near the Hood River Valley, Oregon, pome fruit orchards were investigated to determine the possibility of an integrated control program using the species already present. Survey sampling methods were used to study mites on wild hosts (Crataegus douglasii Lindl., Crataegus columbiana Howell,...
Resource Type:: Dissertation
Full Text:: when in combination with other species (2, p. 659; 26, p. 212; 74, p. 92). About all that is known

ScholarsArchive@OSU

AppleMgr, a prototype decision aid for apple pest management

A revision of the genus Notiphila Fallén (Diptera:Ephydridae) from America north of Mexico

The effect of competition on the population dynamics of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., in Oregon

Environmental biology of Endria inimica (Say) (Homoptera:Homoptera:Cicadellidae)

Visual and olfactory responses of the horn fly, Haematobia irritans (Linn.)

Host selection, reproductive biology, host-specific development and mortality of the codling moth, Cydia pomonella (L.) (Lepidoptera: Torticidae), in apple and pear

A study of relationships of four insects to heating in stored grain

The biology of the brown orchard mite, Bryobia arborea Morgan and Anderson (Acarina : Tetranychidae) on stone fruit trees in The Dalles, Oregon area

Studies on Heterostylum robustum (Osten Sacken) (Diptera : Bombyliidae), a parasite of Nomia melanderi

Ecology of mites on pomaceous fruit trees and related wild hosts in Hood River Valley

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