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Efficacy of non-conventional fungicides for the suppression of dollar spot disease caused by Clarireedia jacksonii

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dc.contributor.advisor Hsiang, Tom
dc.contributor.author Rudland, Matthew
dc.date.accessioned 2020-05-20T19:24:20Z
dc.date.available 2020-05-20T19:24:20Z
dc.date.copyright 2020-04
dc.date.created 2020-04-09
dc.date.issued 2020-05-20
dc.identifier.uri http://hdl.handle.net/10214/17950
dc.description.abstract The potential for non-conventional fungicides to suppress dollar spot disease, caused by Clarireedia jacksonii, was investigated. Treatments were selected from reports in the literature, as well as from the Ontario Government Class 11 lowrisk pesticide list. Treatments found to be efficacious in both preliminary lab and field trials, including ferrous sulfate heptahydrate (FSH) (21% Fe), paraaminobenzoic acid (PABA) (100%) and Affirm WDG (11.3% polyoxin-D zinc salt), were compared across 10 cultivars of Agrostis stolonifera. Significant differences in cultivar response were observed with 1x FSH (250 g/100 m2) applications. On average, 1x FSH and 5x FSH suppressed dollar spot disease by 74 to 78% and 95 to 99% respectively. However, a significant darkening was observed with increasing rates of FSH, which led to phytotoxicity and scarring, especially during hotter periods. en_US
dc.description.sponsorship The Canadian Turfgrass Research Foundation en_US
dc.language.iso en en_US
dc.subject Turfgrass en_US
dc.subject Dollar spot en_US
dc.subject Fungi en_US
dc.subject Disease en_US
dc.subject Ferrous sulfate en_US
dc.subject Para-aminobenzoic acid en_US
dc.subject Polyoxin-D zinc salt en_US
dc.subject Clarireedia jacksonii en_US
dc.subject Creeping bentgrass en_US
dc.subject Agrostis stolonifera en_US
dc.subject Cultivar en_US
dc.subject Phytotoxicity en_US
dc.subject Fungicide en_US
dc.subject Non-conventional fungicide en_US
dc.subject Efficacy en_US
dc.title Efficacy of non-conventional fungicides for the suppression of dollar spot disease caused by Clarireedia jacksonii en_US
dc.type Thesis en_US
dc.degree.programme Environmental Sciences en_US
dc.degree.name Master of Science en_US
dc.degree.department School of Environmental Sciences en_US
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