New Weapon for Tree-Killing Bug

  • Adult emerald ash borer (Photo by David Cappaert, Michigan State University, courtesy of the Michigan Department of Agriculture)

There might be a new weapon to use against a
destructive pest. Rebecca Williams reports the emerald
ash borer has killed more than 30 million ash trees in
eight states and Ontario:

Transcript

There might be a new weapon to use against a
destructive pest. Rebecca Williams reports the emerald
ash borer has killed more than 30 million ash trees in
eight states and Ontario:

No one’s been able to stop the tiny green beetle from killing trees. But
officials are hoping a new insecticide will help.

Researchers at Michigan State University ran trials for one year with a
chemical called Tree-age. In those tests, the insecticide killed all of the
beetles. The state of Michigan has approved the insecticide for use on ash
trees. Indiana, Ohio and West Virginia are also considering it.

Jim Bowes is with the Michigan Department of Agriculture. He says the
emerald ash borer probably can’t be stopped, but the insecticide might
slow the beetle’s spread.

“Nobody here and I don’t think anybody in the federal government at this
point is talking about eradication. I think everybody is talking about how
are we going to coexist?”

Bowes says the insecticide might be able to save trees in your yard, if
the infestation is caught early enough.

For The Environment Report, I’m Rebecca Williams.

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Beech Bark Disease Survivors Are Resistant

  • Beech bark disease often causes the tree's bark to become scaly. (Photo courtesy of Michigan DNR)

Researchers might have a partial solution to the problem of beech bark disease. The disease has killed millions of beeches in the northeast and is advancing on the woodlands of the Midwest. The Great Lakes Radio Consortium’s Tracy Samilton has this report:

Transcript

Researchers might have a partial solution to the problem
of beech bark disease. The disease has killed millions of beeches
in the Northeast and is advancing on the woodlands of the Midwest.
The Great Lakes Radio Consortium’s Tracy Samilton has this report:


Beech bark disease happens when an insect infests beech trees. Then the
trees are killed or crippled by an opportunistic fungus. Where the
disease has struck, researchers found one to five percent of the trees had
natural resistance to the insect.


Jennifer Cook is a USDA Forest Service researcher.Her experiments found that seeds from two resistant parent trees produced progeny that are also resistant. That could set the stage
for reforestation and even pro-active plantings.


“People can plant them before the disease gets there and
therefore lessen the impact on their forest lands.”


Cook says if you’ve got a big beautiful beech tree you want to save, you
can scrub the tree’s bark with insecticidal soap once a year. Of course
it would be impossible to scrub every beech tree in the forests.


For the GLRC, I’m Tracy Samilton.

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