Susceptibility of Psidium guajava Selections to Injury by Cephaleuros sp.. R. B. Marlatt, Plant Pathologist, University of Florida, Agricultural Research and Education Center, Homestead 33031. C. W. Campbell, Horticulturist, University of Florida, Agricultural Research and Education Center, Homestead 33031. Plant Dis. 64:1010-1011. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-1010.

Cephaleuros sp. is a pathogenic green alga that severely injures foliage of guava, Psidium guajava L. Five guava selections were compared for susceptibility to this algal disease. The cultivars Patillo and Blitch had low disease incidence, Ruby × Supreme 6-29 was moderately infected, and Webber × Supreme and Ruby × Supreme 10-30 had a very high incidence of disease.