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231225s2004 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS.2004.88.6.605
|2 doi
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|a eng
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|a Green, S
|e verfasserin
|4 aut
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|a Effect of Moisture and Temperature on Disease of Green Foxtail Caused by Drechslera gigantea and Pyricularia setariae
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|c 2004
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| 336 |
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|a Text
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|2 rdacontent
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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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|a Date Revised 20.11.2019
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Leaf wetness duration, temperature, intermittent leaf wetness, and delayed leaf wetness were investigated for their influence on disease of green foxtail caused by Drechslera gigantea and Pyricularia setariae to determine the potential of these two fungi as bioherbicide agents in the Canadian prairies. For both fungi, disease severity increased with increasing leaf wetness duration at 15, 20, 25, 30, and 32°C. At 10°C, conidia of both fungi showed minimal germination, regardless of leaf wetness duration; however, an increase in conidial germination, appressoria formation, and disease occurred at 15°C. Conidia of both species showed 80% or greater germination at all temperatures above 15°C, whereas the optimum temperatures for appressoria formation by D. gigantea and P. setariae were 23 and 25°C, respectively. Maximum disease occurred after 48 h of leaf wetness at 32°C for D. gigantea and at 25°C for P. setariae. Disease caused by both fungi decreased when 4 h of continuous leaf wetness was followed by a 20-h dry period, and after an 8-h delay in leaf wetness following inoculation. Both fungi required immediate and prolonged periods of leaf wetness at temperatures of 15°C and above to cause severe disease on green foxtail. The moisture requirements of these fungi may limit their effectiveness as bioherbicide agents in the semi-arid Canadian prairies
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|a Journal Article
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|a Peng, G
|e verfasserin
|4 aut
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|a Connolly, T
|e verfasserin
|4 aut
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| 700 |
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|a Boyetchko, S M
|e verfasserin
|4 aut
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| 773 |
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|t Plant disease
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|g 88(2004), 6 vom: 20. Juni, Seite 605-612
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|g volume:88
|g year:2004
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|g day:20
|g month:06
|g pages:605-612
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