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WEED SEED PREDATION BY CARABID BEETLES AND CRICKETS FOR BIOLOGICAL CONTROL OF WEEDS IN WILD BLUEBERRY FIELDS

dc.contributor.authorChahil, Gurminder Singh
dc.contributor.copyright-releaseNot Applicableen_US
dc.contributor.degreeMaster of Scienceen_US
dc.contributor.departmentFaculty of Agricultureen_US
dc.contributor.ethics-approvalNot Applicableen_US
dc.contributor.external-examinerDavid McCorquodaleen_US
dc.contributor.graduate-coordinatorDian Pattersonen_US
dc.contributor.manuscriptsNot Applicableen_US
dc.contributor.thesis-readerA. R. Olsonen_US
dc.contributor.thesis-readerVilis Namsen_US
dc.contributor.thesis-supervisorChris Cutleren_US
dc.date.accessioned2014-09-08T17:51:34Z
dc.date.available2014-09-08T17:51:34Z
dc.date.defence2014-08-27
dc.date.issued2014-09-08
dc.description.abstractWeeds are a major pest problem of wild blueberry. Granivorous insects may consume weed seeds, contributing to pest control. In the laboratory, the ground beetle Harpalus rufipes and field cricket Gryllus pennsylvanicus consumed a significant number of seeds of sheep sorrel and hairy fescue, two important weeds of wild blueberry. In a prey vs. seed preference experiment, H. rufipes preferred aphids over sheep sorrel seeds. Field experiments also found considerable weed seed granivory by invertebrate herbivores. There was generally no effect of distance from field edge and type of field (“crop” or “vegetative”) on the weed seed granivory. In experiments with insecticides used in blueberry production, H. rufipes was highly susceptible to field rates of phosmet (Imidan) and acetamiprid (Assail) by topical exposure and ingestion of treated seeds, whereas no mortality was seen with spirotetramat (Movento).en_US
dc.identifier.urihttp://hdl.handle.net/10222/54081
dc.language.isoen_USen_US
dc.subjectCarabid Beetlesen_US
dc.subjectWeed seed predationen_US
dc.subjectCricketsen_US
dc.subjectBiological controlen_US
dc.subjectPesticidesen_US
dc.subjectWild Blueberryen_US
dc.titleWEED SEED PREDATION BY CARABID BEETLES AND CRICKETS FOR BIOLOGICAL CONTROL OF WEEDS IN WILD BLUEBERRY FIELDSen_US
dc.typeThesisen_US

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