Full TGIF Record # 1322
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Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7348.1975.tb00548.x/abstract
    Last checked: 09/25/2015
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http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7348.1975.tb00548.x/epdf
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Publication Type:
i
Refereed
Author(s):A'Brook, J.
Author Affiliation:Welsh Plant Breeding Station, Aberystwyth, UK
Title:Epidemiology and Effects of Grass Viruses in Relation to Their Insect Vectors
Source:Annals of Applied Biology. Vol. 81, No. 2, 1975, p. 261-264.
Publishing Information:London: Cambridge University Press
Keywords:TIC Keywords: Epidemiology; Cocksfoot mottle virus; Dactylis glomerata; Aphids; Disease control; Lolium perenne; Lolium; Cocksfoot mild mosaic virus
Abstract/Contents:Work on the epidemiology of the mottle virus of cocksfoot grass (Dactylis glomerata), the mosaic virus of ryegrass (Lolium) and the barley yellow-dwarf virus in cereal crops and grasses in Britain is reviewed mainly from the literature. Ryegrass mosaic, which is widespread and has a considerable effect on yields of ryegrass, is transmitted by at least one wind-borne Eriophyid, Abacarus hystrix (Nal.). Data obtained in west Wales during 1972-74 on the weekly percentage infection that developed in plants of L. multiflorum exposed for weekly intervals between late October and early November indicated that most dispersal occurred during June, July and August. Infection of cereals with barley yellow dwarf virus in west Wales is usually confined to autumn, due to the prevalence then of the alate aphid vectors, especially Rhopalosiphum padi (L.). The greatest incidence of infective migrating alates occurs in autumn. The aphids overwinter in cereal crops and grasses. Comparisons of maximum daily catches of aphids with local wind-direction records during September and October 1969-73 indicated that aphids migrate into the area mainly from the south and, to a less extent, the east and south-east. There is evidence that large numbers of the migrating aphids are infected with the barley yellow-dwarf virus. In the autumns of 1973 and 1974, westerly winds prevailed, and the numbers of aphids trapped declined sharply. Control of barley yellow-dwarf and ryegrass mosaic on grasses may be difficult by chemical or agronomic methods, though there is evidence that the landing behaviour of the aphids is affected by plant spacing.
Language:English
References:Unknown
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
A'Brook, J. 1975. Epidemiology and Effects of Grass Viruses in Relation to Their Insect Vectors. Ann. Appl. Biol. 81(2):p. 261-264.
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Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7348.1975.tb00548.x/abstract
    Last checked: 09/25/2015
    Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7348.1975.tb00548.x/epdf
    Last checked: 09/25/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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MSU catalog number: QH 301 .A48
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