The effects of mixing italian ryegrass lolium multiflorum cultivar rvp with perennial ryegrass lolium perenne cultivar endura or red clover trifolium pratense cultivar hungaropoly on the incidence of viruses

Lewis, G.C.; Heard, A.J.; Gutteridge, R.A.; Plumb, R.T.; Gibson, R.W.

Annals of Applied Biology 106(3): 483-488

1985


ISSN/ISBN: 0003-4746
DOI: 10.1111/j.1744-7348.1985.tb03139.x
Accession: 006665441

Download citation:  
Text
  |  
BibTeX
  |  
RIS

Article/Abstract emailed within 0-6 h
Payments are secure & encrypted
Powered by Stripe
Powered by PayPal

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 with 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.

The effects of mixing italian ryegrass lolium multiflorum cultivar rvp with perennial ryegrass lolium perenne cultivar endura or red clover trifolium pratense cultivar hungaropoly on the incidence of viruses