Index Catalog // ScholarsArchive@OSU

Monitoring pesticide resistance in Psylla pyricola Foerster from western Oregon pear orchards

Creator:: Follett, Peter A.
Abstract:: A modified slide-dip bioassay was used to survey and establish baseline resistance levels in Psylla pyricola Foerster from western Oregon orchards to four pesticides. Orchards selected in the Hood River, Rogue River and Willamette Valleys spanned a wide range of environmental and management conditions. During the study period of 1982-1983,...
Resource Type:: Masters Thesis
Full Text:: Monitoring pesticide resistance in Psylla pyricola Foerster

Phytoseiid mites (Parasitiformes:Phytoseiidae) of commerical crops in the Willamette Valley, Oregon and pesticide resistance in the principal species Typhlodromus pyri Scheuten

Creator:: Hadam, John J.
Resource Type:: Masters Thesis
Full Text:: commerical crops in the Willamette Valley, Oregon and pesticide resistance in the principal species

Characterization of strains of Scenedesmus resistant to the herbicide DCMU, (3-(3,4-dichlorophenyl)-1,1-dimethylurea)

Creator:: Smith, Muriel K.
Abstract:: Three DCMU resistant mutants of the green alga Scenedesmus obliquus D₃ are characterized. The mutants exhibit a ten fold greater resistance to DCMU than the wild type strain; this is comparable to the level of DCMU resistance detected in other DCMU resistant algae. In whole cell reactions, as well as...
Resource Type:: Masters Thesis
Full Text:: exhibit a ten fold greater resistance to DCMU than the wild type strain; this is comparable to the level

Effects of early season immigration on acaricide resistance of Tetranychus urticae Koch on strawberry in the California Pajaro and Salinas valleys

Creator:: Miller, Richard W. (Richard William), 1958-
Abstract:: In the Pajaro Valley near Watsonville, California, twospotted spider mite (Tetranychus urticae Koch) populations were surveyed in 1983 and '84 to detect the influence of immigrants from nursery plants or surrounding vegetation on subsequent resistance development to cyhexatin and formetanate in strawberry fields. Susceptible mites (cyhexatin LC50 = 0.0039 %...
Resource Type:: Masters Thesis
Full Text:: Effects of Early Season Immigration on Acaricide Resistance

The SELCTV database : the susceptibility of arthropod natural enemies to agricultural pests to pesticides

Creator:: Theiling, Karen M.
Abstract:: Documentation of the side effects of pesticides on arthropod natural enemies has expanded rapidly since the 1950's as part of an increase in non-target side effects literature. Most reviews have been based on empirical analysis of selected literature. The SELCTV database was developed to make a larger information base accessible...
Resource Type:: Masters Thesis
Full Text:: arthropod natural enemies in the SELCTV database 83 23. Average pesticide resistance ratios for arthropod

Factors affecting farmworkers' injuries due to use of pesticides in the United States and their relation to reentry time intervals

Creator:: Nemati, Gholam Reza
Abstract:: More than 2.3 billion pounds of pesticides with a value of $4.1 billions are applied by farmworkers to agricultural crops each year. These chemicals applied to farm lands lead not only to acute and chronic health effects, they also enter the groundwater and food chain of populations. In recent years...
Resource Type:: Masters Thesis
Full Text:: pesticides, many cases of illness and injury due to pesticide poisoning are reported each year in the

An Interdisciplinary Assessment of Current Pesticide Management Practices in the Caribbean Region

Creator:: Gray, Nancy L.
Abstract:: This study examined the existence and effectiveness of current pesticide management programs in the Caribbean region. A questionnaire was developed to assess the current pesticide managment programs in the Caribbean region and to determine the strengths and weaknesses of the existing education and training programs, governmental policies, and other resources....
Resource Type:: Masters Thesis
Full Text:: An Interdisciplinary Assessment of Current Pesticide

The response of nitrifying bacteria to treatments of N-Serve and Roundup in continuous-flow soil columns

Creator:: Rhodes, Albert N.
Abstract:: This study examined the effects of Roundup [N-(phosphonomethyl) glycine] and N-Serve [2-chloro-6- (trichloromethyl) pyridine] on nitrifying organisms in static batch, perfusion soil columns, and a new continuous-flow soil column system. The continuous-flow method is new to nitrification studies and was shown to produce greater nitrifier activity than either static batch...
Resource Type:: Masters Thesis
Full Text:: controls. Glyphosate can reduce the resistance of some plants to fungal infections, but no increase in

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:: ), Campbell and Hutchins (1952) . Pesticide selectivity has been achieved due to resistance in natural

Toxicity of peppermint monoterpenes to the variegated cutworm, Peridroma saucia Hübner

Creator:: Harwood, Steven Hunter
Abstract:: The toxicity of menthol, menthone, pulegone, limonene, and a-pinene, five monoterpenes found in peppermint (Mentha piperita L.), to the variegated cutworm (Peridroma saucia Hiibner) was characterized by in vivo and in vitro methods. Pulegone and menthone caused slower growth over six days when incorporated into an artificial diet and fed...
Resource Type:: Masters Thesis
Full Text:: PSMO involvement in resistance to pesticides 13 Methods for Study 13 In vivo methodology 13 In vitro

ScholarsArchive@OSU

Monitoring pesticide resistance in Psylla pyricola Foerster from western Oregon pear orchards

Phytoseiid mites (Parasitiformes:Phytoseiidae) of commerical crops in the Willamette Valley, Oregon and pesticide resistance in the principal species Typhlodromus pyri Scheuten

Characterization of strains of Scenedesmus resistant to the herbicide DCMU, (3-(3,4-dichlorophenyl)-1,1-dimethylurea)

Effects of early season immigration on acaricide resistance of Tetranychus urticae Koch on strawberry in the California Pajaro and Salinas valleys

The SELCTV database : the susceptibility of arthropod natural enemies to agricultural pests to pesticides

Factors affecting farmworkers' injuries due to use of pesticides in the United States and their relation to reentry time intervals

An Interdisciplinary Assessment of Current Pesticide Management Practices in the Caribbean Region

The response of nitrifying bacteria to treatments of N-Serve and Roundup in continuous-flow soil columns

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

Toxicity of peppermint monoterpenes to the variegated cutworm, Peridroma saucia Hübner

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