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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:: Morgan and Anderson (Acarina: Tetranychidae) on Stone Fruit Trees in the Dalles, Oregon Area THE

Biology of some Oregon rain bettles, Pleocoma spp., associated with fruit trees in Wasco and Hood River counties

Creator:: Ellertson, Floyd Elroy
Resource Type:: Dissertation
Full Text:: ., associated with fruit trees in Wasco and Hood River counties BIOLOGY OF SOtE OREGON RAIN B TLES , PLEOCO

Torymus festivus n. sp.: a parasite of Dasyneura sp., (Hymen:Chalcidoidea Torymidae)

Creator:: Hobbs, Kenneth Rollin
Resource Type:: Masters Thesis
Full Text:: IORTANCE. Both T. plicata and C. lawsoniana are cornercially important trees and any limiting factor in

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:: more and more on chemical pest control measures which assure higher production while producing fruit

Status, distribution and seasonal variation of filbert aphid resistance to selected insecticides in the Willamette Valley, Oregon

Creator:: Katundu, Juma
Abstract:: Levels of resistance to six selected insecticides of eleven field populations of the filbert aphid Mvzocallis coryli (Goetze) were determined by using the leaf-dip residue technique. Test insecticides included compounds widely used in commercial filbert orchards, namely, carbaryl, diazinon, endosulfan, phosalone, fenvalerate and oxydemetonmethyl. Aphid samples were collected within a...
Resource Type:: Masters Thesis
Full Text:: strains are beneficial, and consist mainly of predatory mites on deciduous fruit trees (Ware 1980, Croft

Biology, distribution and economic threshold of the strawberry root weevil, Otiorhynchus ovatus (L.), in peppermint

Creator:: Cacka, Joseph Francis
Resource Type:: Masters Thesis
Full Text:: Biology 6 Control Strategies and Methods 7 Sampling 10 METHODS AND MATERIALS 12 Field Locations 12

Management of variegated cutworm in peppermint

Creator:: Coop, Leonard Bryan
Abstract:: A pest management program for variegated cutworm (VC), Peridroma saucia (Hubner), in Oregon peppermint was developed based on studies of pheromone trapping, sampling methods, and economic thresholds. Pheromone traps effectively trapped VC males and were used to reflect development and oviposition trends. Trap height was linearly correlated to moth catch...
Resource Type:: Dissertation
Full Text:: thresholds (number of larvae/1000 cm2 as a function of peppermint oil price, cost of control, and field class

Distribution of Oligonychus (Oligonychus) ununguis (Jacobi) (Acari: Tetranychidae) and predator mite species (Acair: Phytoseiidae) on field-grown Douglas-fir (Pseudotsuga menziesii [Mirb] Franco) Christmas trees

Creator:: Calkin, James D.
Abstract:: The shake and wash technique (samples placed in a jar with alcohol added and shaken to remove the mites) was effective in removing 100% of the predator mites, and adult spruce spider mites from Douglas-fir foliage and 98% of the spruce spider mite nymphs. Eighty-eight percent of the spruce spider...
Resource Type:: Masters Thesis
Full Text:: distribution of spruce spider mite and its predator mites was studied on Douglas-fir Christmas trees in the

Classical biological control of the filbert aphid, Myzocallis coryli (Goetze) (Homoptera:Aphididae) in western Oregon

Creator:: Messing, Russell H.
Abstract:: A classical biological control project was undertaken against the filbert aphid, Myzocallis coryli (Goetze), in western Oregon. Hazelnut orchards in Spain, France, and Italy were searched for natural enemies of the aphid, and a parasitic wasp, Trioxys pallidus Haliday, was imported, quarantined, mass-reared, and released in Oregon orchards. The wasp...
Resource Type:: Dissertation
Full Text:: guild. 2. The aphid is a serious, constant pest in hazelnut production. It is costly to control, and

Sampling methods, biology and management of the mint flea beetle in central Oregon peppermint

Creator:: Morris, Mark A.
Abstract:: Sampling techniques were evaluated to quantify immature mint flea beetle (MFB), Longitrsus waterhousei Kutschera (Coleoptera: Chrysomelidae), on peppermint (Mentha piperita L.), in central Oregon. During the study period, 1985-1988, soil samples of 350 cm³ were effective for collecting immature MFB. Sifting soil samples through screens was effective for estimating post-feeding...
Resource Type:: Masters Thesis
Full Text:: to investigate immature MFB field biology, control measures, and to develop future peppermint pest

ScholarsArchive@OSU

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

Biology of some Oregon rain bettles, Pleocoma spp., associated with fruit trees in Wasco and Hood River counties

Torymus festivus n. sp.: a parasite of Dasyneura sp., (Hymen:Chalcidoidea Torymidae)

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

Status, distribution and seasonal variation of filbert aphid resistance to selected insecticides in the Willamette Valley, Oregon

Biology, distribution and economic threshold of the strawberry root weevil, Otiorhynchus ovatus (L.), in peppermint

Management of variegated cutworm in peppermint

Distribution of Oligonychus (Oligonychus) ununguis (Jacobi) (Acari: Tetranychidae) and predator mite species (Acair: Phytoseiidae) on field-grown Douglas-fir (Pseudotsuga menziesii [Mirb] Franco) Christmas trees

Classical biological control of the filbert aphid, Myzocallis coryli (Goetze) (Homoptera:Aphididae) in western Oregon

Sampling methods, biology and management of the mint flea beetle in central Oregon peppermint

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