nematodes are microscopic wireworms that clog up the vascular
system of the Scotch Pine tree, causing them to die quickly
and dramatically. The insect vector that carries the
nematode attacks trees in a random pattern, so there is no way
to predict which trees may get hit next. We lose
perhaps 2%-3% of the Scotch Pines every year.
there has been no prevention or cure for this
disease, but last year Chip Doolittle of
ArborSystems in Omaha,
Nebraska developed a proprietary injection system to deliver a
systemic insecticide into the Scotch Pine trees. This
insecticide is about 70 percent effective in preventing the
nematode for 3 years.