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A revision of the black grass bug genus Irbisia Reuter (Heteroptera:Miridae)

Creator:: Schwartz, Michael David
Abstract:: The black grass bug genus Irbisia Reuter was revised. Over 18,000 specimens were examined and information concerning the biology, host plant and distributional relationships of the species was compiled. In addition to external characters, the male claspers and vesica, and the female dorsal libiate plate of the bursa copulatrix and...
Resource Type:: Masters Thesis

A revision of the genus Deraeocoris Kirschbaum (Heteroptera:Miridae) from western America north of Mexico

Creator:: Razafimahatratra, Vincent de Paul
Abstract:: The genus Deraeocoris Kirschbaum of western America north of Mexico was revised. Approximately 10,000 specimens from the Nearctic Region were examined. Taxonomic characters used by previous authors were reevaluated. In addition to the male parameres, the male vesica and the female posterior wall of the bursa copulatrix and sclerotized rings...
Resource Type:: Dissertation

Effect of glyphosate when applied to grass and legume seeds or preemergence to bentgrass (Agrostis tenuis Sibth.)

Creator:: Salazar, Luis Carlos
Abstract:: Paraquat (1,11-dimethy1-4,4'-bipyridinium ion) and glyphosate [N (phosphonomethyl)glycine] are herbicides utilized for chemical seedbed preparation in the establishment of grass and legume seed crops. When these herbicides are applied after seeding the crop, seeds which are not protected by a layer of soil could be exposed to the herbicide. Effects of...
Resource Type:: Masters Thesis

A taxonomic revision of the Nearctic species of Apateticus Dallas and Podisus Herrich-Schaeffer (Heteroptera:Pentatomidae:Asopinae)

Creator:: Phillips, Kathryn Ann
Resource Type:: Dissertation

Description of the plant communities and succession of the Oregon coast grasslands

Creator:: Ripley, James Douglas
Abstract:: In an effort to describe the plant communities and succession of the Oregon coastal grasslands, vegetation and environmental data were collected from 75 stands at 24 separate locations ranging from Cape Falcon in Tillamook County to Cape Ferrelo in Curry County. The vegetation data consisted of cover and frequency values...
Resource Type:: Dissertation

A systematic study of the genus Phytocoris Fallén (Heteroptera:Miridae) in western North America

Creator:: Stonedahl, Gary Michael
Abstract:: The western Nearctic species of the genus Phytocoris Fallen were taxonomically revised. Over 15,000 specimens were examined. Information concerning host plant associations and distributions was compiled and summarized for use by future researchers. External morphological features and characters of the male genitalia were used to distinguish species. The genital tubercles...
Resource Type:: Dissertation

A revision of the Nearctic species of Sympherobius Banks (Neuroptera: Hemerobiidae)

Creator:: Oswald, John D. (John David)
Abstract:: The Nearctic species of the genus Sympherobius Banks are revised. Seventeen species are recorded from the region. Two new species, S. constrictus and S. quadricuspis are described from California and Arizona respectively. Four new specific synonyms are proposed (junior synonym(s) first): S. brunneus Nakahara and S. stangei Nakahara = S....
Resource Type:: Masters Thesis

Plant and seed development in four Cuphea species

Creator:: Kaliangile, Imanga
Resource Type:: Masters Thesis

Effect of cereal companion crops on the establishment of red fescue (Festuca rubra L.) for seed production

Creator:: Chastain, Thomas G.
Abstract:: Some perennial grass seed crops such as red fescue (Festuca rubra L.) do not produce a profitable seed crop during the first growing season. The present establishment method in Oregon for red fescue seed crops generally entails spring planting which does not satisfy vernalization requirements for seed production in the...
Resource Type:: Masters Thesis

Cordeauxia edulis : production and forage quality in central Somalia

Creator:: Ali, Hussein Mohamed
Abstract:: Availability of evergreen forage plants during the two dry seasons in arid central Somalia is very important. Cordeauxia edulis is a multistemmed evergreen legume shrub which grows in Central Somalia in plant communities dominated by deciduous shrubs. There are two growth forms of this plant. A form with small leaflets...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

A revision of the black grass bug genus Irbisia Reuter (Heteroptera:Miridae)

A revision of the genus Deraeocoris Kirschbaum (Heteroptera:Miridae) from western America north of Mexico

Effect of glyphosate when applied to grass and legume seeds or preemergence to bentgrass (Agrostis tenuis Sibth.)

A taxonomic revision of the Nearctic species of Apateticus Dallas and Podisus Herrich-Schaeffer (Heteroptera:Pentatomidae:Asopinae)

Description of the plant communities and succession of the Oregon coast grasslands

A systematic study of the genus Phytocoris Fallén (Heteroptera:Miridae) in western North America

A revision of the Nearctic species of Sympherobius Banks (Neuroptera: Hemerobiidae)

Plant and seed development in four Cuphea species

Effect of cereal companion crops on the establishment of red fescue (Festuca rubra L.) for seed production

Cordeauxia edulis : production and forage quality in central Somalia

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