Canadian Forest Service Publications

Évaluation de fongicides utilisés pour le contrôle du Gremmeniella abietina. IV. Résultats des essais effectués sur le terrain en 1979 et 1980. (Evaluation of fungicides for control of Gremmeniella abietina. IV. Results of 1979 and 1980 field assays). 1983. Smerlis, E. Environnement Canada, Service canadien des forêts, Centre de recherches forestières des Laurentides, Sainte-Foy (Québec). Rapport d'information LAU-X-58. 26 p.

Year: 1983

Issued by: Laurentian Forestry Centre

Catalog ID: 14441

Language: French / English

Series: Information Report (LFC - Québec)

Availability: PDF (download)

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The North American strain of Gremmeniella abietina occurring on pines can be controlled on jack and red pine seedlings with two applications, at a two-week interval, of 2% (20 g/L) water suspension of Daconil 2787 Flowable fungicide. The first treatment should be carried out early in the spring when the current-year leaders of jack and red pines are 10 and 5 cm long, respectively. Also effective against the same strain is water suspension composed of 0.04% (0.4 g/L) of Acti-dione TGF and 0.4% (4 g/L) of Daconil 2787 Wettable Powder when applied four times at weekly intervals. The Quebec Strain of G. abietina on spruce seedlings can be controlled with one application in July of water suspension of 2% (20 g/L) of Bravo 6F, 2% (20 g/L) of Daconil 2787 Flowable, 3% (30 g/L) of Daconil 2787 Wettable Powder, or 4% (40 g/L) of Dyrene.