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Factors influencing pesticide resistance in Psylla pyricola Foerster and susceptibilty in its mirid predator, Deraeocoris brevis Knight

Creator:: Baan, Hugo E., van de
Abstract:: Factors influencing pesticide susceptibility and resistance were studied in Psylla pyricola Foerster, and its mirid predator, Deraeocoris brevis Knight in the Rogue River Valley, Oregon. Factors studied were at the biochemical, life history, and population ecology levels. Studies on detoxification enzymes showed that glutathione S-transferase and cytochrome P-450 monooxygenase activities...
Resource Type:: Dissertation
Full Text:: Factors influencing pesticide resistance in Psylla

The influence of sulfur and carbohydrate nutrition of Fusarium oxysporum f. sp. lycopersici on resistance to methylisothiocyanate

Creator:: Cobb, William Thompson
Resource Type:: Dissertation
Full Text:: Fusarium oxysporum f. sp. lycopersici on resistance to methylisothiocyanate AN ABSTRACT OF THE THESIS OF

Genetics and gene flow of organophosphate resistance in three predatory mites, Amblyseius andersoni Chant, Typhlodromus pyri Scheuten and Metaseiulus occidentalis Nesbitt (Acarina: Phytoseiidae), in Oregon

Creator:: Dunley, John E.
Abstract:: Genetics, gene flow, and distribution of pesticide resistance traits were examined for organophosphate (OP) resistance in three beneficial phytoseiid mites. Levels and genetics of OP resistance in Amblyseius andersoni were examined first. Laboratory strains from Italy and Oregon, USA, were compared in susceptibility to insecticides used in western Oregon fruit...
Resource Type:: Dissertation
Full Text:: : Genetics, gene flow, and distribution of pesticide resistance traits were examined for organophosphate

Early detection of weed resistance : pattern-thinking and rapid microcalorimetric assay

Creator:: Suwanagul, Duangporn
Abstract:: Weed resistance is usually diagnosed after a weed control practice has lost efficacy and weed populations begin to increase rapidly. Prediction and validation in the field at a very early stage of resistance development is a promising method for preventing an uncontrollable problem. Pattern-thinking helped individuals connect their experience of...
Resource Type:: Dissertation
Full Text:: Weed Resistance: Pattern-Thinking and Rapid Microcalorimetric Assay Abstract approved: ^_/-i

An econometric analysis of the Mexican import demand for U.S. pesticide[s]

Creator:: Saremi, Mahnaz
Resource Type:: Dissertation
Full Text:: , intensity of the selection pressure-inducing resistance (for example, pesticide dosage and number of

Copper and streptomycin resistance in Pseudomonas syringae isolated from Pacific Northwest nurseries

Creator:: Scheck, Heather J.
Resource Type:: Dissertation
Full Text:: Conference VI. Molecular Genetics and Ecology of Pesticide Resistance. T. Brown, ed. ACS, Washington, DC

Organotin resistance in tetranychus urticae koch on pear : components and their integration for resistance management

Creator:: Flexner, J. Lindsey
Abstract:: Reversion of resistance to the organotin (OT) acaricide cyhexatin was documented for the twospotted spider mite, Tetranychus urticae (Koch), by laboratory isolation of a field resistant colony. After 22 generations of no selection the colony reverted back to susceptible. Studies were conducted in 1985 and 1986 on susceptible and resistant...
Resource Type:: Dissertation
Full Text:: pear in southern Oregon. Primarily because of developed pesticide resistance, only one group - the

Dinitroaniline-herbicide resistance in goosegrass (Eleusine indica) : ecophysiological aspects

Creator:: Valverde, Bernal E.
Abstract:: Growth of individual goosegrass (Eleusine indica (L) Gaertn.) plants of three dinitroaniline-herbicide resistant (R) and three susceptible (S) biotypes from North Carolina, South Carolina, and Mississippi was analyzed in greenhouse experiments. Leaf area and biomass measurements, including root, shoot, above-ground, and total dry weights were similar among the biotypes studied....
Resource Type:: Dissertation
Full Text:: policy and the management of pesticide resistance. World Resources Institute, Washington, D.C. 3

The role of ethylene in frost tolerance of Bromus inermis cell suspension cultures

Creator:: Harber, Renee M.
Resource Type:: Dissertation
Full Text:: 4 ETHYLENE/STRESS RESISTANCE 4 A. DISEASE RESISTANCE 4 B. MECHANICAL STRESS RESISTANCE. 5

The effects of four anticholinesterase compounds on the embryology of Acheta domesticus (L.) (Orthoptera: Gryllidae)

Creator:: Hartman, Margaret Jane, 1943-
Abstract:: Two organophosphates (Ruelene and Tiguvon) and two carbamates (Sevin and Baygon) were administered topically at various sublethal concentrations to cricket eggs. All the pesticides caused an immediate decrease in the acetylcholinesterase (AChE) activity level in the embryo, but the level usually returned to normal within three days after dosage. The...
Resource Type:: Dissertation
Full Text:: Tolerance 77 Percent Penetration Through the Chorion 78 Comparison of Pesticide Penetration to Maximum AChE

ScholarsArchive@OSU

Factors influencing pesticide resistance in Psylla pyricola Foerster and susceptibilty in its mirid predator, Deraeocoris brevis Knight

The influence of sulfur and carbohydrate nutrition of Fusarium oxysporum f. sp. lycopersici on resistance to methylisothiocyanate

Genetics and gene flow of organophosphate resistance in three predatory mites, Amblyseius andersoni Chant, Typhlodromus pyri Scheuten and Metaseiulus occidentalis Nesbitt (Acarina: Phytoseiidae), in Oregon

Early detection of weed resistance : pattern-thinking and rapid microcalorimetric assay

An econometric analysis of the Mexican import demand for U.S. pesticide[s]

Copper and streptomycin resistance in Pseudomonas syringae isolated from Pacific Northwest nurseries

Organotin resistance in tetranychus urticae koch on pear : components and their integration for resistance management

Dinitroaniline-herbicide resistance in goosegrass (Eleusine indica) : ecophysiological aspects

The role of ethylene in frost tolerance of Bromus inermis cell suspension cultures

The effects of four anticholinesterase compounds on the embryology of Acheta domesticus (L.) (Orthoptera: Gryllidae)

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