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Pesticide resistance : apple scab; apple

Creator:: Yorston, John and Sholberg, Peter
Resource Type:: Conference Proceeding
Full Text:: I. DECIDUOUS ORCHARD DISEASES e. Pesticide Resistance

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

How to reduce the risk of pesticide resistance in winegrape pests in Oregon [2008]

Creator:: Kaiser, Clive, Pscheidt, Jay W., Walton, Vaughn M., and Skinkis, Patricia A.
Abstract:: Pesticides, including insecticides, acaricides, fungicides, bactericides, and herbicides are essential for maintaining healthy grape crops with reliable yields and quality. In many instances, pesticides have become less effective as target organisms have developed resistance. The first record of resistance dates to 1897, when orchardists began having problems controlling San Jose...
Resource Type:: Technical Report
Full Text:: .]). Since then, pesticide resistance has become a worldwide threat to commercial agricul- ture. Several

Monitoring pesticide resistance in tentiform leafminer, codling moth and obliquebanded leafroller

Creator:: Shearer, Peter W. and Riedl, Helmut W.
Resource Type:: Conference Proceeding
Full Text:: II. Feme Fruits e. Pesticide Resisranee Tentiform

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

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

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

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

ScholarsArchive@OSU

Pesticide resistance : apple scab; apple

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

How to reduce the risk of pesticide resistance in winegrape pests in Oregon [2008]

Monitoring pesticide resistance in tentiform leafminer, codling moth and obliquebanded leafroller

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

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

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

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

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