Released on November 19, 2008
Dutch elm disease was not found in any new communities this year. While the disease continued to spread in areas where it is already established, several communities, including the city of Regina, experienced a decline over last year in the number of infected trees.
Communities confirming the presence of infected elms include Regina (5), Lumsden (9), Regina Beach (13), Fort Qu'Appelle (33), Katepwa (39), Estevan (7), Carnduff (2), Indian Head (9), Echo Valley Provincial Park (86), Radville (5), Odessa (1), Wolseley (2), Francis (1), Grenfell (2) and Carlyle (3). The city of Moose Jaw found no infected trees this year, despite infections in previous years. The communities of Saskatoon, Swift Current, Prince Albert, North Battleford and Yorkton remain Dutch elm disease-free.
"These results indicate that overall, the disease is holding steady in the province, which is positive," provincial Dutch elm disease program administrator Jeffery Gooliaff said.
Buffer or protection zones are established outside urban centres with significant elm populations to limit the movement of the disease. Infected elms have been identified in the following buffer zones - Indian Head (21), Moose Jaw (16) and Regina (137).
The removal of all of the infected trees is underway. Early removal limits the spread of the disease by removing the source of the Dutch elm disease fungus. The fungus is spread mainly by the native elm bark beetle, but a new insect capable of transmitting the disease, the banded elm bark beetle, has made its way to Saskatchewan.
"The banded elm bark beetle is native to Asia and was first detected in Canada in 2003," Gooliaff said. "We found it in five Saskatchewan locations this year and, given its history in other areas of North America, we expect this beetle's range to expand. The single most important thing people can do to help stop the spread of Dutch elm disease, as well as other insects and diseases, is to avoid transporting wood with bark."
Healthy elms resist infection better and homeowners should prune their trees regularly, while observing the annual pruning ban from April 1 to August 31. Because of the risk of spreading the disease, it is illegal to transport or store elm firewood.
For more information about disease prevention, call Saskatchewan Environment's toll-free Dutch elm disease information line at 1-800-SASK ELM (1-800-727-5356).
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For more information, contact:
Jeff Gooliaff
Environment
Prince Albert
Phone: 306-953-2987
Cell: 306-961-1650