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foliar nematodes

Has any one noticed an increase in the prevalence of leaf nematodes?  I've
found leaf nematodes in hosta from 3 different suppliers this year.  I spoke
with Dr. David MacDonald at the Plant Pathology Department, Univ of
Minnesota and he states that there has been an increase in the incidence of
leaf nematodes, possibly due to mild winters and/or the large number of
plants being sold and traded.   As the summer progresses damage from
nematode infestation should be easier to spot and identify.  What
precautions are others taking?  I know of no one who quarantines their new

Steve Roman, Champlin, MN

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