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231225s2009 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-93-5-0528
|2 doi
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|a pubmed24n0979.xml
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|a (DE-627)NLM293896828
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|a (NLM)30764136
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Wise, K A
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Resistance to QoI Fungicides in Ascochyta rabiei from Chickpea in the Northern Great Plains
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| 264 |
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1 |
|c 2009
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| 336 |
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|a Text
|b txt
|2 rdacontent
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| 337 |
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|a ƒaComputermedien
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|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
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|2 rdacarrier
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| 500 |
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|a Date Revised 08.04.2022
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Ascochyta blight, caused by Ascochyta rabiei (teleomorph: Didymella rabiei), is an important fungal disease of chickpea (Cicer arietinum). A monitoring program was established in 2005 to determine the sensitivity of A. rabiei isolates to the QoI (strobilurin) fungicides azoxystrobin and pyraclostrobin. A total of 403 isolates of A. rabiei from the Northern Great Plains and the Pacific Northwest were tested. Ninety-eight isolates collected between 2005 and 2007 were tested using an in vitro spore germination assay to determine the effective fungicide concentration at which 50% of conidial germination was inhibited (EC50) for each isolate-fungicide combination. A discriminatory dose of 1 μg/ml azoxystrobin was established and used to test 305 isolates from 2006 and 2007 for in vitro QoI fungicide sensitivity. Sixty-five percent of isolates collected from North Dakota in 2005, 2006, and 2007 and from Montana in 2007 were found to exhibit a mean 100-fold decrease in sensitivity to both azoxystrobin and pyraclostrobin when compared to sensitive isolates, and were considered to be resistant to azoxystrobin and pyraclostrobin. Under greenhouse conditions, QoI-resistant isolates of A. rabiei caused significantly higher amounts of disease than sensitive isolates on azoxystrobin- or pyraclostrobin-amended plants. These results suggest that disease control may be inadequate at locations where resistant isolates are present
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| 650 |
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|a Journal Article
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| 700 |
1 |
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|a Bradley, C A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pasche, J S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gudmestad, N C
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Plant disease
|d 1997
|g 93(2009), 5 vom: 11. Mai, Seite 528-536
|w (DE-627)NLM098181742
|x 0191-2917
|7 nnns
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| 773 |
1 |
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|g volume:93
|g year:2009
|g number:5
|g day:11
|g month:05
|g pages:528-536
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| 856 |
4 |
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|u http://dx.doi.org/10.1094/PDIS-93-5-0528
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| 952 |
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|d 93
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|h 528-536
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