Abstract
Norway (in contrast to Denmark and Sweden) has so far had only a few outbreaks of Dutch elm disease, all in the southern part of Norway (cities of Oslo and Drammen) on one or a few Ulmus glabra trees in city parks, not far from harbours and railways. Scolytus laevis endemic to Norway is the only potential vector found in the diseased trees. Transmission of the fungus through root grafts cannot be disregarded. The fungus is currently considered a dangerous foreign organism in Norway, subject to treatment according to the Norwegian phytosanitary regulations. Control measures, aiming at eradication, have been applied in all known cases of attack. Removal and destruction of diseased trees, stump treatment with herbicide, and covering of stumps with soil, have apparently been successful measures.
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