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An Investigation of Sustainable Management of Carrot Weevil in the Holland Marsh, Ontario

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dc.contributor.advisor Scott-Dupree, Cynthia
dc.contributor.advisor McDonald, Mary Ruth Telfer, Zachariah 2017-02-01T19:12:58Z 2017-02-01T19:12:58Z 2017-01 2017-01-04 2017-02-01
dc.description.abstract The carrot weevil (CW), Listronotus oregonensis (LeConte), is a major carrot pest in Canada. Larval CW feeding renders carrot roots unmarketable. The efficacy of the CW IPM program was evaluated. Field trials and analysis of historical data determined CW monitoring did not effectively relate to CW damage and CW has likely developed phosmet resistance. Field trials showed that foliar, seed treatment, or in-furrow insecticide applications generally failed to reduce CW damage, although foliar applications of novaluron and cyantraniliprole showed some efficacy. Throughout field trials, damage from an apparent 2nd CW generation was observed. The Holland Marsh (Ontario) was surveyed for natural enemies of CW. All known natural predators and one parasitoid of CW were found although their impact on the CW population is unknown. Future CW research at the Holland Marsh should focus on improving monitoring techniques, evaluating new insecticides, and examining the feasibility of conservation biological control. en_US
dc.description.sponsorship OMAFRA – University of Guelph Research Program, Fresh Vegetable Growers of Ontario, Bradford Co-Op Storage Ltd., Engage Agro and DuPont Canada Co. en_US
dc.language.iso en en_US
dc.rights Attribution 2.5 Canada *
dc.rights.uri *
dc.subject integrated pest management en_US
dc.subject pest management en_US
dc.subject pesticide en_US
dc.subject agriculture en_US
dc.subject entomology en_US
dc.subject applied entomology en_US
dc.subject carrot weevil en_US
dc.subject carrot en_US
dc.subject Holland Marsh en_US
dc.subject insect en_US
dc.subject beetle en_US
dc.subject sustainable agriculture en_US
dc.title An Investigation of Sustainable Management of Carrot Weevil in the Holland Marsh, Ontario en_US
dc.type Thesis en_US Environmental Sciences en_US Master of Science en_US School of Environmental Sciences en_US
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Attribution 2.5 Canada Except where otherwise noted, this item's license is described as Attribution 2.5 Canada