Incidence of PAV-like and RPV-like viruses in four pasture species on two sites at Sandford, Tasmania

Guy, P.L.

Incidence of PAV-like and RPV-like viruses in four pasture species on two sites at Sandford, Tasmania

1990

Guy, P.L. (Department of Agriculture, Hobart, Tasmania (Australia))

Four pasture species sown at the same time in heavy and light soil conditions were sampled for barley yellow dwarf viruses. Only PAV-like, RPV-like, and mixed infections of these two viruses were detected from the two sites. Higher levels of infection (from predominantly PAV-like viruses) were detected in fescue (Festuca arundinacea Schreb) (21 %) and ryegrass (Lolium perenne L.) (27 %). Levels of infection were lower in cocksfoot (Dactylus glomerate L.) (6 %) and phalaris (Phalaris aquatica L.) (7 %), and both were predominantly infected with RPV-like viruses. Rhopalosiphum padi (L.) was collected from all four species, while small numbers of Sitobion fragariae (Walker) were collected only from fescue.

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