Author
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Martin, Robert |
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PSCHEIDT, JAY - Oregon State University |
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Submitted to: Pacific Northwest Plant Disease Control Handbook
Publication Type: Experiment Station Publication Acceptance Date: 4/5/2014 Publication Date: 6/8/2014 Citation: Martin, R.R., Pscheidt, J. 2014. Raspberry (Rubus spp.)-Ringspot. Pacific Northwest Plant Disease Management Handbook. Available: http://pnwhandbooks.org/plantdisease/node/3842/print. Interpretive Summary: Technical Abstract: Tomato ringspot virus (ToRSV), which is spread at a rate of about 6 ft a year in the row by dagger nematodes (Xiphinema americanum) and possibly related species. It is common in red raspberry in the northern Willamette valley in Oregon and in Clark County in southern Washington. Many weeds also are host to both the virus and nematode. Symptoms vary from mottled, chlorotic, mosaic leaves to leaf curling and ring spotting. Infected plants often show no symptoms but have low vigor and yield. On some cultivars it causes a severe dwarfing that resembles root rot damage. Many red raspberry cultivars are susceptible; affected plants of ‘Fairview’ die quickly. 'Canby', 'Puyallup', ‘Meeker’, ‘Willamette’ and probably most cultivars are susceptible to Tomato ringspot virus and are severely weakened when affected. Tomato ringspot virus has not been detected in blackberries In the PNW, even when planted into a field that had affected red raspberries without any soil treatment before planting. Also, after 10 years, many of the weeds present in the blackberry field were positive for Tomato ringspot virus, showing that the virus and vector were still present. Tomato ringspot virus has been reported in blackberry in other parts of the world, suggesting that there may be differences in susceptibility to this virus in blackberry. |
