variable_of Stem rust infection type seedling composite/unknown A qualitative analysis of the type of disease symptoms exhibited by seedlings inoculated with a composite collection or unknown race of stem rust (Puccinia graminis f. sp. avenae) during greenhouse trials. Ratings made using the scale from Stakman et al. (1962): immune= 0, very resistant= 1, moderately resistant= 2, moderately susceptible= 3, and very susceptible= 4. acronym entity method_of attribute scale_of