Technical Report
 

Russian wheat aphid - to spray or not to spray

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https://ir.library.oregonstate.edu/concern/technical_reports/xk81jm26p

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  • When Russian wheat aphids are found in a grain field the first question that comes to mind is "Should I spray them?" We all recognize that RWA can cause serious damage to cereal crops, but should you spray to control them? Will the spray be effective? The answer is "We're not sure." Research conducted in Oregon to date documents that aphid populations can be reduced by sprays, but often this reduction is not correlated with yield increase. This publication provides some basic background on Russian Wheat aphid, current economic threshold levels and results of spray studies conducted in eastern Oregon.
  • Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
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  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
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