Editing Spruce (section)

==== ''Valsa kunzei'' branch and stem canker ====
A branch and stem canker associated with the [[fungus]] ''Valsa kunzei'' Fr. var. ''picea'' was reported on white and Norway spruces in Ontario (Jorgensen and Cafley 1961)<ref name="jorg">{{cite journal |author=Jorgensen, E. and Cafley, J.D. |year=1961 |title=Branch and stem cankers of white and Norway spruces in Ontario |journal=For. Chron. |volume=37 |issue=4 |pages=394–400 |doi=10.5558/tfc37394-4|doi-access=free }}</ref> and Quebec (Ouellette and Bard 1962).<ref name="ouel">{{cite journal |author=Ouellette, G.B.; Bard, G. |year=1962 |title=Observations on a canker and resinosis in white and Norway spruce |journal=Can. Dep. For., for. Ent. Path. Branch, Ottawa ON, Bi-mo. Progr. Rep. |volume=18 |issue=2 |pages=2}}</ref> In Ontario, only trees of low vigour were affected, but in Quebec vigorous trees were also infected.