The effects of mixing Italian ryegrass (Lolium multiflorum) with perennial ryegrass (L. perenne) or red clover (Trifolium pratense) on the incidence of viruses

A - Papers appearing in refereed journals

Lewis, G. C., Heard, A. J., Gutteridge, R. A., Plumb, R. T. and Gibson, R. W. 1985. The effects of mixing Italian ryegrass (Lolium multiflorum) with perennial ryegrass (L. perenne) or red clover (Trifolium pratense) on the incidence of viruses. Annals of Applied Biology - AAB. 106 (3), pp. 483-488.

AuthorsLewis, G. C., Heard, A. J., Gutteridge, R. A., Plumb, R. T. and Gibson, R. W.
Abstract

Mixing the ryegrass mosaic virus (RMV) resistant perennial ryegrass (Lolium perenne) cv. Endura with the susceptible Italian ryegrass (L. multiflorum) cv. RvP decreased infection of RvP wth RMV from 37% when grown alone to 22% when mixed. However, Endura yielded less than RvP and there was no yield benefit from mixing the two cultivars. Mixing red clover (Trifolium pratense) cv. Hungaropoly with RvP had no detectable effect on RMV incidence in RvP but did decrease the incidence of red clover necrotic mosaic virus in Hungaropoly from 9% to 1% and of white clover mosaic virus from 53‐5% to 41%. The yield of the mixture was equal to that of RvP grown alone but given nitrogen fertiliser.

The numbers of eriophyid mites, including Abacarus hystrix the vector of RMV, on ryegrass leaves were similar in pure and mixed swards.

It is concluded that with herbage crops, the common practice of sowing mixtures of species may help control virus diseases.

Year of Publication1985
JournalAnnals of Applied Biology - AAB
Journal citation106 (3), pp. 483-488
Digital Object Identifier (DOI)doi:10.1111/j.1744-7348.1985.tb03139.x
Open accessPublished as non-open access
Output statusPublished
Publication dates
Print01 Jun 1985
Publication process dates
Accepted18 Feb 1985
Copyright licensePublisher copyright
PublisherWiley
ISSN0003-4746

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