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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-07-21-1588-RE
|2 doi
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|a pubmed24n1121.xml
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|a eng
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|a Daniels, Hazel A
|e verfasserin
|4 aut
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|a Local Eradication of Phytophthora ramorum Is Effective on Both NA1 and EU1 Lineages in Oregon Tanoak Forests
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|c 2022
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|a Text
|b txt
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|a ƒaComputermedien
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|a Date Completed 02.05.2022
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|a Date Revised 25.08.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Sudden oak death (SOD), caused by the oomycete Phytophthora ramorum, has been actively managed in Oregon since its discovery there in 2001. SOD is a devastating disease affecting an ecologically and culturally important tree species in southwestern Oregon. Initially infested with the NA1 lineage, the more virulent EU1 lineage was discovered in 2015. Management has adapted over time in response to experimental findings and administrative limitations. Current management practices present an opportunity to compare the efficacy of treatment on these lineages by analyzing P. ramorum inoculum at untreated and treated sites. Current treatment includes herbicide treatment on host stems followed by felling, piling, and burning on site. Infested sites were visited between 2018 and 2020 (n = 88), where understory vegetation and soil was collected. Generalized linear modeling demonstrated that treatment had a significant impact on P. ramorum prevalence from vegetation samples, with an average of 33% (± 10%) fewer positive samples at treated sites. Linear mixed-effects modeling of a subpopulation of EU1 sites visited before and after treatment showed a similar effect of treatment, with a 43% (± 15%) reduction in P. ramorum prevalence. Prevalence of P. ramorum in soil was not affected by treatment in either analysis. A third analysis taking into consideration recent wildfire incursion into infested areas revealed that wildfire alone is insufficient to reduce prevalence of P. ramorum. These results strongly suggest that management is successfully reducing P. ramorum inoculum found on understory vegetation, and that treatment remains necessary to reduce the spread of this major forest pathogen
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|a Journal Article
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|a EU1
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|a NA1
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|a Phytophthora ramorum
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|a disease management
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|a sudden oak death
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|a Navarro, Sarah M
|e verfasserin
|4 aut
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|a LeBoldus, Jared M
|e verfasserin
|4 aut
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|i Enthalten in
|t Plant disease
|d 1997
|g 106(2022), 5 vom: 17. Mai, Seite 1392-1400
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|x 0191-2917
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|g volume:106
|g year:2022
|g number:5
|g day:17
|g month:05
|g pages:1392-1400
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|u http://dx.doi.org/10.1094/PDIS-07-21-1588-RE
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