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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:: appreciation is expressed to Dr. K. G. Swenson and Dr. W. W. Chilcote who served on the graduate committee

Creator:: Reeve, Daniel Hart
Abstract:: A study was conducted of the response of the garden symphylan, Scutigerella immaculata (Newport), to naturally occurring chemicals. Results of olfactometer studies with plant odors were inconclusive because air currents in one olfactometer and the shape of another had undesirable effects on symphylan behavior. Non-random distributions of symphylans in chambers...
Resource Type:: Masters Thesis
Full Text:: Professor of Entomology, for his advice and encouragement as my major professor. Dr. Knud G. Swenson

Creator:: Annis, Barry Alan
Abstract:: Green peach aphid and associated weed populations were monitored continuously from April, 1978 to March, 1979 at three orchards and a drainage ditch. Aphid populations at all sites peaked in spring and declined in summer. Although natural enemies were most active during the period of peak aphid abundance, they were...
Resource Type:: Masters Thesis
Full Text:: , and feeding behavior, are well suited as vectors (Kennedy 1960, Swenson 1968). In agricultural areas

Creator:: Groth, Eric M.
Abstract:: Pergamasus quisquiliarum Canestini is a polyphagous predatory mite that has been shown to feed on the economically important arthropod, Scutigerella immaculata Newport (Symphyla: Scutigerellidae), Collembola, Diptera larvae, Enchytraeid worms, and miscellaneous other soil organisms. This study examined the feeding behavior of P. quisquiliarum, the effects of cover cropping and tillage...
Resource Type:: Masters Thesis
Full Text:: Shanks 1964), a nematode (Swenson 1966), and an unidentified "gamasid" mite (Wymore 1931). The relative

Creator:: Emenegger, Donald Brian
Abstract:: The life history of the strawberry root weevil, Otiorhynchus ovatus (L.), on peppermint was studied in the Willamette Valley of Oregon to provide the information necessary to develop effective control measures. Adult weevils emerged from the soil from late May until mid- June and were active in the field until...
Resource Type:: Masters Thesis
Full Text:: Dr. Knud G. Swenson, Professor and Chairman of the Entomology Department, Oregon State University

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