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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:: , Painter and Jones 1958). Due to the presence of the pest complex described above and the need to reduce

DNA markers linked to novel sources of resistance to eastern filbert blight in European hazelnut (Corylus avellana L.)

Creator:: Sathuvalli, Vidyasagar R.
Abstract:: The hundred-year history of the hazelnut industry in the Pacific Northwest is threatened by eastern filbert blight (EFB) caused by the fungus Anisogramma anomala (Peck) E. Müller. Marker-assisted selection (MAS) has been extensively used for ‘Gasaway’ resistance in the hazelnut breeding program at Oregon State University. Concern over breakdown of...
Resource Type:: Masters Thesis
Full Text:: , ‘Ratoli’ and OSU 759.010) have shown no signs or symptoms of the disease following a series of

The biology and seasonality of the parasitiod Trioxys pallidus Haliday in western Oregon

Creator:: Cohn, Judy L.
Abstract:: Seasonal synchrony between the filbert aphid, Myzocallis coryli (Goetze) and its newly introduced parasitoid Trioxys pallidus Haliday was examined in the field to evaluate the effectiveness of parasitoid based biological control in filbert orchards of Oregon. Fieldemergence observations showed that 50% eclosion of the aphid occurred 14 days before that...
Resource Type:: Masters Thesis
Full Text:: filbert seedlings from Europe but did not become a pest until the 1920's (Smith and Parron, 1978

Structure, function, and analysis of Coleoptera and Heteroptera assemblages on two species of hazelnut in Oregon

Creator:: Wetherill, Karen R.
Abstract:: The European hazelnut, Corylus avellana L., was imported into the U.S. in the late 1800's and is now grown throughout the Willamette Valley in Oregon. A native species of hazelnut, C. cornuta Marshall, is a common shrub found in forested areas of the Pacific Northwest. Foliage of both C. avellana...
Resource Type:: Masters Thesis
Full Text:: pest and beneficial insect fauna of hazelnut orchards has been studied extensively (AliNiazee 1980

Toxicity of some commonly used pesticides to Trioxys Pallidus and its establishment in filbert orchards of Willamette Valley

Creator:: Saeed, Mohammad
Abstract:: A parasitic wasp, Trioxys pallidus Haliday (Hymenoptera: Aphidiidae) was imported from Europe and initially released against the filbert aphid Mvzocallis coryli (Goetze) in hazelnut (filbert) orchards of the Willamette Valley, Oregon beginning in 1984. In the present study, I investigated the establishment rates of this parasitoid. A total of 13...
Resource Type:: Masters Thesis
Full Text:: demand for nuts, higher profitability and the recent introduction of improved varieties. The pest

DNA markers and characterization of novel sources of eastern filbert blight resistance in European hazelnut (Corylus avellana L.)

Creator:: Peterschmidt, Brooke C.
Abstract:: European hazelnut is a significant crop in the Pacific Northwest, and the US ranks 4th internationally for hazelnut production. Production in the Pacific Northwest is threatened, however, by the disease eastern filbert blight (EFB) caused by the fungus Anisogramma anomala (Peck) E. Müller. To meet the challenges faced by the...
Resource Type:: Masters Thesis
Full Text:: transcriptome sequences and on disease resistance from three accessions (‘Culpla,’ ‘Crvenje,’ and OSU 495.072

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

Studies of yellow rust of Rubus

Creator:: Lund, Walter Thomas
Resource Type:: Masters Thesis
Full Text:: and Distribution of the Disease ............. i Purpose of the Investigation

Rhizoctonia of the potato

Creator:: Corsaut, Jesse Harrison
Resource Type:: Masters Thesis
Full Text:: the disease on sugar beets in 1858 , and on carrots in 1854. Following the report of the disease

Studies of the crinkle disease of strawberry, with special reference to its transmission

Creator:: Vaughan, Edward Kemp
Resource Type:: Masters Thesis
Full Text:: . Geographic Distribution and Econoric Importance 5 III. Symptomz of Crinkle IV. Nature of the Disease

ScholarsArchive@OSU

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

DNA markers linked to novel sources of resistance to eastern filbert blight in European hazelnut (Corylus avellana L.)

The biology and seasonality of the parasitiod Trioxys pallidus Haliday in western Oregon

Structure, function, and analysis of Coleoptera and Heteroptera assemblages on two species of hazelnut in Oregon

Toxicity of some commonly used pesticides to Trioxys Pallidus and its establishment in filbert orchards of Willamette Valley

DNA markers and characterization of novel sources of eastern filbert blight resistance in European hazelnut (Corylus avellana L.)

Biology of Meligethes seminulum lec. (Coleoptera: Nitidulidae)

Studies of yellow rust of Rubus

Rhizoctonia of the potato

Studies of the crinkle disease of strawberry, with special reference to its transmission

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