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231225s2005 xx |||||o 00| ||eng c |
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|a 10.1094/PD-89-1171
|2 doi
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|a pubmed24n0980.xml
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|a eng
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1 |
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|a Groth, D E
|e verfasserin
|4 aut
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| 245 |
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|a Azoxystrobin Rate and Timing Effects on Rice Sheath Blight Incidence and Severity and Rice Grain and Milling Yields
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| 264 |
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|c 2005
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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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| 500 |
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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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| 520 |
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|a Lack of sheath blight resistant varieties requires rice (Oryza sativa) farmers to use fungicides to avoid significant reductions in grain yield and milling yield. Studies were conducted to determine the best rate and rice growth stage for a single application of azoxystrobin, a fungicide recently labeled for this use, to effectively control sheath blight. Azoxystrobin was applied foliarly to inoculated field plots in 2000 to 2002 using rates of 0.22, 0.17, and 0.11 kg a.i. ha -1 at 7 days after panicle differentiation (PD+7), boot (B), and heading (H) growth stages and at 0.17 kg a.i. ha-1 at 5, 10, and 15 days after heading. Sheath blight severity (measured on a 0 to 9 scale) and incidence (percent tillers infected) were assessed 1 to 2 weeks before harvest. A fungicide application made between PD+7 and H significantly reduced sheath blight severity, which resulted in significantly higher yield and head rice milling yield compared with inoculated unsprayed plots. There were no significant effects of fungicide rate at the PD+7, B, and H growth stages. Fungicide-treated plots had yield and milling yield similar to the very lightly diseased, uninoculated check plots included for comparison. With fungicide application made postheading, rice had higher disease severity, resulting in lower yields and milling yield compared with rice receiving earlier applications
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| 650 |
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|a Journal Article
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| 650 |
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4 |
|a application timing
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| 650 |
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4 |
|a yield loss
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| 773 |
0 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 89(2005), 11 vom: 19. Nov., Seite 1171-1174
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|x 0191-2917
|7 nnns
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| 773 |
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|g volume:89
|g year:2005
|g number:11
|g day:19
|g month:11
|g pages:1171-1174
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| 856 |
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|u http://dx.doi.org/10.1094/PD-89-1171
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