Fertilizer and Downy Brome (Bromus tectorum) Effect on Russian Wheat Aphid (Diuraphis noxis) in Winter Wheat (Triticum aestivum)
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Published:1993-09
Issue:3
Volume:7
Page:670-673
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ISSN:0890-037X
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Container-title:Weed Technology
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language:en
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Short-container-title:Weed technol.
Author:
Krall James M.,Miller Stephen D.,Bennett Larry E.,Legg David E.
Abstract
Downy brome serves as an alternative host for Russian wheat aphid (RWA) in winter wheat. In field studies, downy brome infestations of 5 and 39 plants per m2increased RWA-infested winter wheat tillers 1.4 to 2.8 times that seen in non-infested plots, respectively. RWA-infested winter wheat tillers were not reduced consistently by fertilization. Chlorpyrifos reduced the number of RWA-infested winter wheat tillers to 15 to 43% of untreated wheat. Insecticide efficacy was not influenced by downy brome infestation or by fertilizer either band- or broadcast-applied.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
Reference20 articles.
1. Letters following this symbol are a WSSA-approved computer code from Composite List of Weeds, Revised 1989. Available from WSSA, 309 W. Clark St., Champaign, IL 61820.
2. Abbreviations: RWA, Russian wheat aphid.
3. Downy Brome Control in Dryland Winter Wheat with Stubble‐mulch Fallow and Seeding Management
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4. Russian wheat aphid-host plant interaction: nitrogen fertilizer;Riedell;U.S. Dep. Agric—Agric. Res. Ser. Plant Sci. Water Conserv. Lab. Prog. Rep.,1992