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Filtering by: Subject Gaeumannomyces graminis -- Control -- Oregon Committee Member Johnson, Kenneth

Overwintering survival of stem rust on perennial ryegrass : construction of a simulation model, and effects of the mycoparasite Sphaerellopisis filum

Creator:

Gordon, Tyler C.

Abstract:

Stem rust, caused by the fungus Puccinia graminis subsp. graminicola, can cause yield reductions exceeding 90% on perennial ryegrass (Lolium perenne L.) crops grown for seed if not treated with fungicide in the spring. There is evidence that late-spring stem rust epidemics are initiated by populations that survived the winter....

Resource Type:

Masters Thesis

Full Text:

. filum infected stem rust uredinia in the glasshouse and field under conditions typical of an Oregon