Xenodidymella applanata (Niessl) Q. Chen & L. Cai, (2015)
Raspberry spur blight
Didymella applanata on Rubus idaeus
Causal agents
Didymella applanata
Hosts
Raspberry
EPPO Code
DIDYAP
Raspberry spur blight is caused by the fungus Didymella applanata.[2] This plant pathogen is more problematic on red raspberries (Rubus idaeus) than on black or purple raspberries. The fungus infects the leaves first and then spreads to the cane. It causes necrotic spots on the cane near the base of the petiole attachment.[3] Raspberry spur blight can cause a significant reduction in yield, fruit blight, premature leaf drop, and weak bud and cane growth. The magnitude of damage is not clearly understood in the United States, however, studies from Scotland suggest damage to the cane itself is limited.[4] The disease has minor economic impacts by reducing leaves in the summer or killing buds. Major economic damage occurs if the disease manages to kill the entire cane.[3]
In the United States, this disease is found in Oregon and Washington.[5]
^Chen; et al. (2015). "Resolving the Phoma enigma". Studies in Mycology. 82: 137–217. doi:10.1016/j.simyco.2015.10.003. PMC 4774273. PMID 26955202.
^Ellis, Michael A. http://ohioline.osu.edu/hyg-fact/3000/pdf/HYG_3008_08.pdf "Spur Blight of Red Raspberries", 2008.
^ abMcCamant, Thaddeus. "Apple, Raspberry, & Strawberry Pests". Minnesota Department of Agriculture. Retrieved 3 December 2012.
^Ellis, Michael A. "Spur Blight of Red Raspberries", 2008.
^"Raspberry (Rubus sp.)-Spur Blight". APS Press. Retrieved 3 December 2012.
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