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Arthropod community organization and development in pear

Creator:: Gut, Larry J.
Abstract:: Arthropod communities in pear are conceptualized as hierarchically organized systems in which several levels of organization or subsystems can be recognized between the species population level and the community as a whole. An individual tree is taken to be the community habitat with arthropod subcommunities developing on leaf, fruit and...
Resource Type:: Dissertation
Full Text:: Arthropod Community Organization and Development in Pear

The potential of endemic natural enemies to suppress pear psylla, Cacopsylla pyricola Förster, in the Hood River Valley, Oregon

Creator:: Booth, Steven R.
Abstract:: This thesis addressed the potential of endemic predaceous and parasitic arthropods of the Hood River Valley, Oregon to suppress the pear psylla, Cacopsylla pyricola F8rster. Natural enemies adequately suppressed psylla in three of seven unsprayed orchards of differing vegetational settings, orchard age, and size. Relatively few psylla natural enemies dispersed...
Resource Type:: Dissertation
Full Text:: non-pear plant hosts, and to assess their role in selective pest control programs in commercial pear

A two-year comparison of natural enemy/pear psylla dynamics in an unsprayed pear block

Creator:: Booth, Steven R.
Resource Type:: Conference Proceeding
Full Text:: predator immigration and colonization of pear, a block of mature D'Anjou pears at MCAREC was left unsprayed

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:: .) related to pome fruits, abandoned and commercial apple and pear orchards, and soil with its cover in

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
Full Text:: and Mortality of the Codling Moth, Cydiapomonella (L.) (Lepidoptera: Tortricidae), in Apple and Pear

The biology and control of the insect vectors of potato viruses in Oregon

Creator:: Crumb, S. E. (Samuel Ebb)
Resource Type:: Dissertation
Full Text:: project. He has grown the tuber samples from insecticide plots and determined the amount of disease

Biology of Meligethes seminulum lec. (Coleoptera: Nitidulidae)

Creator:: Dickason, E. A. (Elvis Arnie), 1919-
Resource Type:: Masters Thesis
Full Text:: - ported as an economic pest because it destroys the flowers of cruciferous and uinbelliferous plants

Life history and habits of the strawberry crown-moth Aegeria rutilans

Creator:: Hills, Orin A.
Resource Type:: Masters Thesis
Full Text:: . "The best surest and easiest way to control this pest, however is to watch the plants closely early in

Biology and control of the black cherry aphid, Myzus cerasi (FAB.), in the Willamette Valley

Creator:: Gilmore, James Eugene
Resource Type:: Masters Thesis
Full Text:: , general information regarding the seasonal history of the pest, preda- tors and parasites, control

Mechanisms of resistance in broccoli, Brassica oleracea italica to the garden symphylan, Scutigerella immaculata (Newport)

Creator:: Simagrai, Montri
Abstract:: Studies were conducted on the mechanisms contributing to resistance in broccoli, Brassica oleracea italica, to the garden symphylan, Scutigerella immaculata (Newport). Differences in resistance to symphylan injury were shown between five selected broccoli cultivars. The hybrid cultivars, Crusader, Green Duke and Bravo, showed a higher level of resistance to symphylans...
Resource Type:: Masters Thesis
Full Text:: been grown successfully. Included in the report of Insect-Pest Management and Control (1969), were

ScholarsArchive@OSU

Arthropod community organization and development in pear

The potential of endemic natural enemies to suppress pear psylla, Cacopsylla pyricola Förster, in the Hood River Valley, Oregon

A two-year comparison of natural enemy/pear psylla dynamics in an unsprayed pear block

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

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

The biology and control of the insect vectors of potato viruses in Oregon

Biology of Meligethes seminulum lec. (Coleoptera: Nitidulidae)

Life history and habits of the strawberry crown-moth Aegeria rutilans

Biology and control of the black cherry aphid, Myzus cerasi (FAB.), in the Willamette Valley

Mechanisms of resistance in broccoli, Brassica oleracea italica to the garden symphylan, Scutigerella immaculata (Newport)

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