2026-04-17T11:17:56Zhttps://recercat.cat/oai/requestoai:recercat.cat:10459.1/571632024-12-05T22:09:59Zcom_2072_3622col_2072_479130
RECERCAT
author
Oliva Palau, Jonàs
author
Colinas, C. (Carlos)
2024-12-05T22:09:59Z
2024-12-05T22:09:59Z
2016-06-06T10:40:00Z2025-01-012008
http://hdl.handle.net/10459.1/57163
Melampsorella caryophyllacearum is a heteroecious
fungus that produces disease on silver fir
resulting in galls that depreciate the value of trees.
Currently, little is known about its epidemiology. The
purpose of this study was to identify those site or
management factors associated with fir broom rust
infection. A 29-plot systematic sampling was carried
out throughout all silver fir forests in the Spanish Pyrenees.
In every sampling plot, we examined each tree
for the presence of M. caryophyllacearum galls or
witch’s brooms. We differentiated their position as
either on the main stem or on the branches of trees.
We identified the most susceptible stands by relating a
compendium of tree and stand variables with the
presence and severity of symptoms. Disease symptoms
were observed in 11.8% (95% CI: 5.8–17.9%) of trees.
Fir broom rust-infected trees tended to be those of
larger diameters. The rust infection was observed in
55.2% (95% CI: 35.7–73.6%) of the stands. We identified
a wide range of severities with 5 of 29 stands
having more than 30% of trees infected. Fir broom rust
appeared to be a widespread disease, although we
observed important differences in terms of severity.
The presence and severity of the rust in stands was
associated with understories composed of more shade
tolerant plant species and with longer periods without
thinnings. Canopy opening should be experimentally
tested as a possible control method.Authors are grateful to the Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA), Spain, project (RTA01-071-C3-1), and to the managing organism of the INTERREG III A, France-Spain, Action S3 of the project SYLVAPYR (I3A-1-57-E) for partially funding this research.
(c) Springer Verlag, 2008 info:eu-repo/semantics/restrictedAccess
Abies alba
Silver fir
Rust
Disease management
Canopy openings may prevent fir broom rust (Melampsorella caryophyllacearum) infections
article publishedVersion