Cane and leaf rust
Cane and leaf rust | |
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Kuehneola uredinis asexual spores | |
Scientific Classification | |
Kingdom: | Fungi |
Division: | Basidiomycota |
Class: | Urediniomycetes |
Order: | Uredinales |
Family: | Phragmidiaceae |
Genus: | Kuehneola |
Species: | Kuehneola uredinis |
Synonyms | |
Bramble stem rust Cane and leaf rust |
Cane and leaf rust is a plant pathogenic fungus whose main host is the blackberry although infection of raspberry has been known, it is rare.[1]
Symptoms[edit | edit source]
Some blackberry cultivars, especially trailing varieties, are susceptible to cane and leaf rust. Symptoms are first visible as pale yellow pustules (uredinia) that protrude from splits in the bark of fruiting canes. Leaves are infected by spores (urediniospores) that originate from the uredinia and further pustules become visible on the underside of leaves in early summer. Severe infections may cause defoliation. Pale yellow-brown coloured spore case clusters develop on leaves in early autumn.[1]
Symptoms are similar to orange rust, which is a less common but more serious disease. Orange rust will cause small, weak shoots to develop near the base of the plant.[1]
Control[edit | edit source]
The best method of control is to remove and dispose of fruit canes soon after harvest to reduce inoculum sources in combination with the application of fungicides when growing highly susceptible varieties or when the cane and leaf rust is a known problem.[1]
Organic control methods[edit | edit source]
Destruction of fruited canes immediately after harvest will reduce incidence of the disease. Spraying with lime sulfur or fixed coppers will also help.[1]
Examples[edit | edit source]
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Black raspberry
References[edit | edit source]
This page uses Creative Commons Licensed content from Wikipedia (view authors). |
- ↑ a b c d e Koike, S.T.; Bolda, M.P.; Perry, E.J.; Gubler, W.D. and Bettiga, L.J. (2009). UC Pest Management Guidelines "Cane and Leaf Rust". University of California Integrated Pest Management Programme. Retrieved: 2011-01-07.