Mycologia, BASIDIOMYCOTINA, UREDINALES, PUCCINIACEAE .
sugar beet .
Identification, Description, Biology, Epidemiology, Treatement, Possible misleading, Images
All around the Mediterranean area distorsions occur on the petioles, the leaf lamina and in the seed crops in spring.
Slightly discoloured leaf spots appear in autumn and small pustules (aprox. 1 mm) filled with a rust-orange powder form on the upper and lower leaf surface.
The leaves become yellow and die.
The spring attacks result in the formation of aecidiospores which contaminate the surrounding foliage. This infection causes the occurence of the rust-orange urediniospores.
The late season spores are teliospores through which the parasite is carried over from one year to the next.
Avoid excessive use of nitrogen.
No treatment is necessary.
HYP3 on line : Species (scientific name), Diseases (common names), Glossary, Crops.