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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-12-21-2789-RE
|2 doi
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|a pubmed24n1127.xml
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Wei, Xing
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Comparison of Current Peanut Fungicides Against Athelia rolfsii Through a Laboratory Bioassay of Detached Plant Tissues
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 02.08.2022
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|a Date Revised 02.08.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Southern stem rot of peanut, caused by Athelia rolfsii, is an important fungal disease that impacts peanut production worldwide. Foliar-applied fungicides are used to manage the disease, and several fungicides have been recently registered for southern stem rot control in peanuts. This study compared fungicidal, residual, and potential systemic activity of current fungicides against A. rolfsii using a laboratory bioassay. Peanut plants grown in the field were treated with eight fungicides approximately 90 days after planting, and plants were collected for the laboratory bioassay weekly for 5 weeks following application. Peanut plants were separated into the newest fully mature leaf present at sample collection, the second newest fully mature leaf present at the time of fungicide application, the upper stem, and the crown tissues. Each plant tissue was inoculated with A. rolfsii then incubated at 30°C for 2 days. Lesion length was measured, and percent inhibition of fungal growth by each fungicide relative to the control was calculated. All fungicides provided the greatest inhibition of A. rolfsii on leaf tissues that were present at the time of fungicide application, followed by the newly grown leaf and upper stem. Little inhibition occurred on the crown. Fungal inhibition decreased at similar rates over time for all fungicides tested. Succinate dehydrogenase inhibitors provided less basipetal protection of upper stems than quinone outside inhibitor or demethylation inhibitor fungicides. Properties of the fungicides characterized in this study, including several newly registered products, are useful for developing fungicide application recommendations to maximize their efficacy in controlling both foliar and soilborne peanut diseases
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|a Journal Article
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|a Arachis hypogaea
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| 650 |
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|a Sclerotium rolfsii
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4 |
|a demethylation inhibitor (DMI)
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| 650 |
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4 |
|a fungal inhibition
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| 650 |
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4 |
|a quinone outside inhibitor (QoI)
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| 650 |
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4 |
|a residual activity
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| 650 |
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4 |
|a southern stem rot
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| 650 |
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4 |
|a succinate dehydrogenase inhibitor (SDHI)
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| 650 |
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|a Fungicides, Industrial
|2 NLM
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1 |
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|a Langston, David B
|c Jr
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mehl, Hillary L
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Plant disease
|d 1997
|g 106(2022), 8 vom: 20. Aug., Seite 2046-2052
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|x 0191-2917
|7 nnns
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|g volume:106
|g year:2022
|g number:8
|g day:20
|g month:08
|g pages:2046-2052
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|u http://dx.doi.org/10.1094/PDIS-12-21-2789-RE
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