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231225s2009 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-93-3-0243
|2 doi
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|a pubmed24n0979.xml
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|a (DE-627)NLM293897336
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|a (NLM)30764186
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Mueller, T A
|e verfasserin
|4 aut
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| 245 |
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|a Effect of Fungicide and Timing of Application on Soybean Rust Severity and Yield
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| 264 |
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|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
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|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 Soybean rust, caused by Phakopsora pachyrhizi, is a devastating foliar disease of soybean that may cause significant yield losses if not managed by well-timed fungicide applications. To determine the effect of fungicide timing on soybean rust severity and soybean yield, field trials were completed in Paraguay (four locations), the United States (two locations), and Zimbabwe (one location) from 2005 to 2006. Treatments at each location included applications of tebuconazole, pyraclostrobin, or a combination of azoxystrobin + propiconazole, and in some locations pyraclostrobin + tebuconazole at the following soybean growth stages (GS): (i) GS R1 (beginning flowering), (ii) GS R3 (beginning pod), (iii) GS R5 (beginning seed), (iv) GS R1 + R3, (v) GS R3 + R5, and (vi) GS R1 + R3 + R5. Soybean yields from plots treated with fungicides were 16 to 114% greater than yields from no fungicide control plots in four locations in Paraguay, 12 to 55% greater in two locations in the United States, and 31% greater in Zimbabwe. In all locations, rust severity measured over time as area under the disease progress curve (AUDPC) was negatively correlated (r = -0.3, P < 0.0001) to yield. The effectiveness of any given treatment (timing of application and product applied) was often dependent on when rust was first detected and the intensity of its development. For example, when soybean rust was first observed before GS R3 (two locations in Paraguay), the plants in plots treated with a fungicide at GS R1 had the lowest AUPDC values and highest yields. When soybean rust was first observed after GS R3, plants treated with a fungicide at GS R3 and/or GS R5 had the lowest AUDPC values and highest yields with a few exceptions
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|a Journal Article
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|a Miles, M R
|e verfasserin
|4 aut
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|a Morel, W
|e verfasserin
|4 aut
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| 700 |
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|a Marois, J J
|e verfasserin
|4 aut
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| 700 |
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|a Wright, D L
|e verfasserin
|4 aut
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| 700 |
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|a Kemerait, R C
|e verfasserin
|4 aut
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| 700 |
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|a Levy, C
|e verfasserin
|4 aut
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| 700 |
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|a Hartman, G L
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 93(2009), 3 vom: 11. März, Seite 243-248
|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:3
|g day:11
|g month:03
|g pages:243-248
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|u http://dx.doi.org/10.1094/PDIS-93-3-0243
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