The state of Oregon has identified seven pesticides for which it will establish benchmarks for safe levels in Oregon’s waterways, the Statesman Journal of Salem, Ore. reported last month. All seven were selected because they have been found in Oregon streams and could have risks to the health of humans and/or salmon and other fish. […]
Gall mites cause problems for growers
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A microscopic mite about .01 inch long is giving nurseries fits because it is destructive, yet difficult to detect, the Capital Press reported. According to Robin Rosetta of the OSU Extension Service, the eriophyid mite, also known as the gall mite, can cause galls, scarring, discoloration, wrinkling and malformation on growing shoots. The tiny bugs […]
Curry County still fighting p. ramorum
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Timber owners, nurseries and other interested parties are working to prevent the spread of P. ramorum, or sudden oak death, in Curry County, Ore., on the southern Oregon Coast. According to the Curry Coastal Pilot newspaper in Brookings, Ore., the Curry County Biomass Working Group has invited Forest Service officials who are experts to speak […]
Out-of-state firewood: bad
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Oregon residents are being asked to make sure that if they purchase firewood, that it comes from Oregon. According to Dan Hilburn, administrator of the Oregon Department of Agriculture Plant Division, that’s because firewood often allows diseases and invasive species to hitchhike to new locales, endangering trees and nursery stocks in whole new areas. Officials […]
Chrysanthemum white rust found in Connecticut
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Puccinia horiana, also known as chrysanthemum white rust, was detected at six locations in two counties in Connecticut, the Litchfield County Times (Conn.) reported last week. Additionally, the parasite also was found in Michigan, according to a USDA bulletin. According to the USDA, “Chrysanthemum white rust may be recognized by the small white to yellow […]
Kousa dogwood IDd as P. ramorum host
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USDA APHIS officials indicate they are planning to add the Kousa dogwood, Cornus kousa, to the list of plants that have been identified as hosts for Phytophthora ramorum, the destructive plant pathogen that’s also known as sudden oak death. The species of dogwood will now come under federal regulations designed to combat the spread of […]
No beer, just bugs
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There will be no oom-pah music, no beer and no lederhosen. At least we hope. Nonetheless, there will be much to celebrate every Thursday in October as the North Willamette Research and Extension Center observes OktoberPest. Every Thursday in October, from 9 a.m.-noon, there will be a workshop at NWREC, 15210 N.E. Miley Road, Aurora, […]
Light brown apple moth detected, quarantined
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Two light brown apple moths have been newly detected in California and as a result, the California Department of Food and Agriculture has established a 19-square-mile quarantine in an area straddling Sonoma and Napa counties. It’s now illegal to move any nursery stock, cut flowers, host fruits or vegetables, or plant parts within this area […]
Asian longhorned beetle found in Illinois, Massachusetts
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It’s long. It’s distinctive. And it chews dime-sized holes in many species of hardwood trees so that it can lay eggs in them, perpetuating a cycle that leads to infestation and the death of the tree.USDA officials are mobilizing a response after confirming the presence of the Asian longhorned beetle in Worcester, Mass. A resident […]
Emerald ash borer found in two states
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For the first time, the emerald ash borer has been detected in Missouri, as well as in Wisconsin. The adult borer doesn’t cause much harm to trees, but in larvae form, it’s a whole different story. The borer larvae consume the inner bark of ash trees, disrupting their vascular systems and causing them to dehydrate […]
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