Adult emerald ash borer (Photo by David Cappaert, Michigan State University, courtesy of the Michigan Department of Agriculture)
The emerald ash borer has eaten through
millions of trees in the US and is spreading
west. Erin Toner has more:
Transcript
The emerald ash borer has eaten through
millions of trees in the US and is spreading
west. Erin Toner has more:
For six long years, the tiny metallic-green emerald ash borer has been a killing machine,
starting with millions of ash trees in Michigan and Canada, and then munching its way
into 10 states.
It was recently discovered in Missouri, and now, it’s in Wisconsin.
The prognosis is not good.
Darrell Zastrow is with the Wisconsin Department of Natural Resources.
“Our forests are not typically resilient against non-native species and that is true for
the emerald ash borer. It is generally considered to be a poster child for invasive
species.”
Officials in Wisconsin are doing what everyone else has done – restricting the movement
of firewood and telling people how to protect their trees.
Some promising treatments to fight the emerald ash borer are being tested, but so far,
nothing has worked at keeping the insect from spreading west.
A ship discharging its ballast water (Photo courtesy of the US Geological Survey)
Ships should be bringing in fewer unwanted
pests into the Great Lakes. Both Canada and the
U-S are now requiring ships to flush out their
ballast water tanks before entering the lakes.
Tracy Samilton reports:
Transcript
Ships should be bringing in fewer unwanted pests into the Great
Lakes. Both Canada and the U.S. are now requiring ships to flush out their
ballast water tanks before entering the lakes. Tracy Samilton reports:
Ships need to take on ballast water to keep them stable. When they pump in
water from freshwater foreign ports, they also suck up pests.
Since 2006,
Canada has required ships to flush their tanks with salty ocean water
before entering the Great Lakes. The U.S. adopted the requirement at the
start of this year.
Collister Johnson is with the U.S. side of the St.
Lawrence Seaway, which connects the Atlantic Ocean to the Great
Lakes. He says the rule will eliminate almost 99% of freshwater
pests in ballast tanks.
“If they’re exposed to salt water, especially full strength sea water, they
are effectively killed.”
Samilton: “Why didn’t we do this before?”
Johnson: (laughs) “I don’t know.”
It won’t completely eliminate the problem because some aquatic pests can
still survive in the sediment in the bottom of ballast tanks.
Garlic mustard ranges from eastern Canada, south to Virginia and as far west as Kansas and Nebraska (Photo courtesy of the National Parks Service's Plant Conservation Alliance)
An invasive plant called Garlic Mustard is
taking over forests in the Eastern half of the country,
and it could be causing long term damage. Julie Grant
reports that some people are getting smart in their
efforts to get rid of Garlic Mustard:
Transcript
An invasive plant called Garlic Mustard is
taking over forests in the Eastern half of the country,
and it could be causing long term damage. Julie Grant
reports that some people are getting smart in their
efforts to get rid of Garlic Mustard:
Brad Steman spends a lot of time in the woods. He likes the serenity.
But as we walk through this park, he winces. The entire forest floor is
carpeted with one plant and one plant only: Garlic Mustard.
Thousands of them. The thin green stalks are as tall as our ankles.
Steman calls it “the evil weed.” Its triangle-shaped leaves shade out
wildflowers, so they don’t grow. Even worse, Steman says Garlic
Mustard poisons baby trees.
“So a forest filled with Garlic Mustard you will see very little
regeneration of that forest, very few seedlings, small trees. So
looking down the line, once those large trees start dying off there’s
nothing to replace them. And that now is the greatest threat to our
Eastern forests.”
Steman says every year Garlic Mustard is spreading farther into the
woods. Anywhere the ground is disturbed.
“So here’s a big stand of it along a trail. This is typically where it
starts. This is thick. This is a healthy stand. There’s potential there
for an explosion. So we should probably pull some. I’ll pull some;
you don’t have to pull any.”
Thank goodness he’s doing it – that looks it looks like tedious work.
Steman crouches down and starts pulling them out of the ground,
roots and all. He sprayed herbicide on some of it, and so far this
season he’s filled 35 big garbage bags with Garlic Mustard plants.
He’s sick of weeding. But it doesn’t look like he’s made a dent here.
All along the Eastern half of the US and Canada people are pulling up
Garlic Mustard from parks and just throwing it away. But some
people don’t like this approach.
“All these people are very shortsighted when they’re doing that.”
Peter Gail is a specialist in edible weeds.
“They’re not looking for other alternative uses – creative ways to use these plants that would be
profitable, that would be productive.”
Gail says: “If you can’t beat ‘em, eat ‘em.” People brought Garlic
Mustard to the US in the mid-1800s because they liked it, to eat. And
they even used it for medicine. Yep. That same nasty weed.
Gail says today Garlic Mustard just needs an image makeover.
Some weeds have become big stars in the cooking world. A few
years ago Purselane was just an unwanted vine, with its fleshy, shiny
leaves matted to the ground. Now it’s known as a nutritional
powerhouse, and is the darling of New York and LA eateries. Gail
wants that kind of fame for Garlic Mustard.
“This is a Garlic Mustard Ricotta dip, Garlic Mustard salsa, stuffed Garlic Mustard leaves – these are all things you can do with this stuff. It’s fantastic!”
Garlic Mustard seeds taste like mustard, the leaves taste like garlic
and the roots are reminiscent of horseradish.
Gail says people should go after Garlic Mustard in the parks, but then
they should take it to farm markets to sell.
“My normal statement is that the best way to demoralize weeds is to
eat them.
Because when you eat them they know you like them and they don’t
want to be there anymore, and so they leave.”
(blender sound)
Today Gail decides to blend a pesto using the early spring leaves.
He picks every last Garlic Mustard in his yard to make a batch.
“Well there it is, garlic mustard pesto. And it isn’t bad, is it?”
Julie Grant: “It’s delicious.”
For The Environment Report, I’m Julie Grant.
Gail: “I’ll use that on ravioli tonight.”
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.
Apple grower Jim Koan has discovered that baby pigs are best for taking care
of fallen wormy apples in his orchard. He says they have very tender noses.
The adult pigs like to root around in the dirt and tend to tear up the
orchard. (Photo by Rebecca Williams)
Jim Koan's Berkshire pigs, enjoying the early spring mud. (Photo by Rebecca Williams)
Berkshire pigs like to investigate visitors. (Photo by Rebecca Williams)
Some of the guinea fowl that Jim Koan first tried to use to tackle the apple
pest, plum curculio. It was working, until hawks found out the orchard
was full of tasty little birds. (Photo by Rebecca Williams)
Jim Koan says being an organic grower means thinking ahead. Once you have
an infestation - it's too late. (Photo by Rebecca Williams)
There are a lot of insects that love to eat
apples. A harmful insecticide that kills some of
those pests is being phased out. So farmers are
looking for other solutions. Rebecca Williams visits
an apple grower who’s counting on pigs to get some
help with his pest problem:
Transcript
There are a lot of insects that love to eat
apples. A harmful insecticide that kills some of
those pests is being phased out. So farmers are
looking for other solutions. Rebecca Williams visits
an apple grower who’s counting on pigs to get some
help with his pest problem:
(farm animal sounds – turkeys, etc)
The spring rains have started, and at Jim Koan’s pig pen that means mud.
(sound of shoes squishing in mud and piggy snorts)
Of course, these pigs don’t really seem to mind that.
“These Berkshires, you can see, are really friendly, they’re just coming
right up to you.”
Jim Koan really likes his pigs. That’s because he’s hoping the pigs will
take care of one of his worst pests. It’s a beetle called the plum
curculio. In early spring the beetles lay eggs in the little green apples.
The larvae hatch and eat the apples from the inside out.
Then the tree drops the bad wormy apples on the ground. And the worms just
keep on eating.
For a long time, farmers used an insecticide called azinphos-methyl to kill
the beetles. But the Environmental Protection Agency is phasing it out.
That’s because the EPA says the pesticide is very toxic to some wildlife and
it can make farm workers sick.
Jim Koan hasn’t used the pesticide for 10 years, ever since he became an
organic grower. So for years now he’s been trying to find a perfect
predator to stop the beetle larvae.
The chickens were too lazy. Hawks ate the guinea fowl that he tried.
So, finally, Koan says he had a flashback. His grandpa used to have hogs in
the orchard.
“When I would climb up to go up in the tree in the summertime to get a green
apple to eat all the hogs would come running over there and my granddad
always told me you stay away from those hogs they’ll eat you up! I’d be
really scared and be up there for an hour or two until the hogs left again.”
(laughs)
Koan says he knows now that the hogs were just hoping for a snack. So last
year he decided to buy some hogs and see if they would eat the wormy apples
on the ground. He says baby pigs worked best.
“And they’d just go up one row gleaning it, kinda like little vacuum
cleaners (makes sucking sound) and suck up all the apples!”
Koan says the baby pigs ate 98% of the fallen apples with beetle
larvae in them. But he still needed to know that the beetles were actually
gone, so they wouldn’t come back to attack his apples next year.
That job
was up to researchers at Michigan State University. Koan says they fed a
mix of beetle larvae and apples to pigs on campus.
“Then they put diapers on the hogs – truly, diapers!! It was unbelievable.
They took special superglue and velcroed it on their butt so then when they
defecated they caught all that. Then they took these poor students and made
them go through there and wash all that and look for worms.”
Koan says out of 200 worms that were fed to the pigs, they only found one
worm at the other end. That means, so far it looks like pigs are a
pretty good predator.
But the researchers don’t want to let pigs run wild – just yet. David
Epstein is the lead researcher on the project.
“Jim and I are scheming all the time. I have great expectations that this
could be a good management tool in the future but we have to figure out how
to do it properly.”
Epstein says they need to make sure the pigs don’t cause any contamination
problems. Something like E. coli. He says so far there isn’t any
evidence of that, but it’s the kind of thing you have to be sure about.
If this all goes well, the farmer and the scientist will be writing a book
together. It’ll be sort of a self-help book: getting pigs to take care of
what’s bugging you.
The government concedes it can’t get rid of a pest that’s been killing
trees. But it has a program that’s slowing its spread. Fred Kight
reports federal and state officials are using a pesticide on the tree-
killing gypsy moth in 10 states:
Transcript
The government concedes it can’t get rid of a pest that’s been killing
trees. But it has a program that’s slowing its spread. Fred Kight
reports federal and state officials are using a pesticide on the tree-
killing gypsy moth in 10 states:
The Slow the Spread Project is run by the US Forest Service and Donna
Leonard is the program manager. She says they focus on hindering the
gypsy moth’s advance into new territory:
“…And for the past five or six years, we’ve been holding spread at
about two to three miles per year, compared to 13 miles per year, which
is the rate it was spreading before we started.”
The tactic employed against the gypsy moth in the spring is aerial
spraying of pesticide, and for the most part they use a naturally
occurring soil bacteria commonly referred to as BTK.
A Sierra Club activist says BTK is far preferable to synthetic
pesticides but it can be a problem because it can kill other bugs, too.
An invasive insect that has hurt forests in eastern states for more than 50 years is spreading to northern forests. Richie Duchon reports officials think it came by way of out-of-state nurseries:
Transcript
An invasive insect that has hurt forests in eastern states for more than 50 years is spreading to
northern forests. Richie Duchon reports officials think it came by way of out of state nurseries:
The tiny bug kills hemlock trees. The Hemlock Wooly Adelgid makes the trees weak and
vulnerable to droughts. Most of them die within ten years.
Mike Phillip is with the Michigan Department of Agriculture. He says this is an important time
of year for finding the adelgid.
“It begins to become active and will develop a white cottony, fluffy surrounding for its body. It’s
called an ova sac. And that is where it gets its name Wooly Adelgid. And that is an important
stage for us, because that’s where it becomes visible to us, and we can really get an idea of the
size of an infestation and what we’re really facing.”
Hemlocks are an important tree in forests, because they make good habitat for birds and animals.
The Environmental Protection Agency says the phase-out of a widely used pesticide is working. They say the amount of methyl bromide companies have in stock has been dropping since 2003. Christina Shockley has more:
Transcript
The Environmental Protection Agency says the phase-out of a widely used pesticide is
working. They say the amount of methyl bromide companies have in stock has been
dropping since 2003. Christina Shockley has more:
Methyl bromide is a colorless, odorless gas used by crop growers to kill unwanted bugs.
Scientists say when the chemical gets into the atmosphere, it depletes the ozone layer.
Drusilla Hufford is with the Environmental Protection Agency. She says methyl bromide
is the fourth most widely-used pesticide in the United States:
“It’s used in soils where people are growing crops, it’s used to make sure that houses and
structures are free of pests, and it’s used to make sure that commodities that are shipped
abroad or brought into the United States are also free of pests.”
Methyl bromide was phased out of production in the US in 2005, except for limited
cases. So, for the most part, what’s used now was produced before then.
Hufford says many growers, especially in California, are increasing their use of safer
alternatives to methyl bromide.
For the Environment Report, I’m Christina Shockley.
Homeowner Frank Wydra watches as logs from 16 of his ash trees get turned into lumber. All of the ash trees close to his house had to be cut down after they became infested with emerald ash borers. (Photo by Rebecca
Williams)
Chris Last and his son Kurt operate their portable sawmill. (Photo by Rebecca Williams)
This pile of newly-milled ash lumber will be covered with a tarp and left outside to dry before being finished into cabinets or furniture. (Photo by Rebecca Williams)
Homeowners and cities are losing many of their big, beautiful shade trees. An invasive insect called the emerald ash borer is killing ash trees in Michigan, Ohio, and Indiana… and making neighboring states worried. About 15 million ash trees are dead or dying, leaving behind enormous bills. The GLRC’s Rebecca Williams reports some people are trying to ease the loss by salvaging lumber from their dead trees:
Transcript
Homeowners and cities are losing many of their big, beautiful shade
trees. An invasive insect called the emerald ash borer is killing ash
trees in Michigan, Ohio, and Indiana… and making neighboring states
worried. About 15 million ash trees are dead or dying leaving behind
enormous bills. The GLRC’s Rebecca Williams reports some people are
trying to ease the loss by salvaging lumber from their dead trees:
(sound of birds chirping)
The emerald ash borer ruined Frank Wydra’s summer plans. His 10 acre
lot is full of ash trees… more than a hundred. Wydra built an
elaborate shade garden underneath a cluster of ash trees, right next to
his brand new house. Right around the time he and his family were
ready to move in… they noticed the trees were looking sick.
“They were here when we bought the property and we sort of built the
property, the house around these trees. I had no alternative but to
cut these down, because they were so close to the house.”
Wydra says he’s losing a lot more than a shady backyard. He says the
emerald ash borer is costing him at least 10-thousand dollars. That’s
the cost for cutting the trees down, grinding the stumps out… and
planting new trees. But there’s one part of that cost he’s not too
upset about: the 100 dollars an hour he’s paying to have his dead ash
trees milled into lumber.
(sound of portable sawmill at work and running under)
“It’s got a very close grain that allows you to mill it without too
much trouble. It’s nice stuff. I wish I hadn’t built all my
cabinets.”
Frank Wydra’s already got more board feet of ash piled up here than he
knows what to do with. But he says he’d rather pay to have the logs
turned into something he can use than pay to have them hauled away.
Wydra hired a company called Last Chance Logs to Lumber. Chris Last
brings his portable sawmill to sites like this one, and with some help
from his family members, he loads the logs onto the sawmill and slices
the bark away.
(sound of rolling logs under)
“We’re required to take at least a half inch below those two layers,
you’ll see as we open this up… just the characteristics of the log will
determine that… usually we take off more than that.”
By stripping away the bark and a half inch of the wood beneath the
bark, Chris Last is making sure none of the emerald ash borers will
survive.
Researchers have found that carefully debarking ash logs is one way to
make the wood safe to use.
Chris Last created his business four years ago, shortly after the ash
borer was first identified as the pest killing trees in the upper
Midwest. Since then, he says some of his customers have gotten pretty
creative.
“The neatest thing is a gentleman that was an architect, when he had
the tree cut down he left the log standing for about 10 feet, and what
he ended up building was an old English cottage house on top of this
stump. I guess he reads up there, but it’s beautiful, it’s absolutely
gorgeous, every bit of it, every stick is made out of ash.”
Last says he’s seen a church craft new pews from their ash trees, and
he’s worked for cities that have built picnic tables from ash, but for
the most part, homeowners and city officials are just starting to
figure out how to use the lumber from their dead trees.
Jessica Simons is with the Southeast Michigan Resource Conservation and
Development Council. It’s a nonprofit group that’s giving out grants
to promote the use of ash wood. Simons says the idea’s catching on,
but there are some real obstacles.
“To be honest, it can be a tricky proposition. What’s easier: go to
Lowe’s and buy lumber, or to have your dead trees removed, hire a
sawmill, have the mill come out, allow wood to dry and then be able to
finish it into a product.”
But Simons says milling ash trees into lumber can sometimes save money.
Right now, most homeowners and cities chip up their dead trees and have
the chips hauled away. Both of those steps cost money. Simons says by
milling trees on site, you can cut back on the disposal costs and end
up with wood for a new dining table or a bunch of park benches.
Jessica Simons points out that not all parts of the ash trees can be
turned into products. She says most of the ash wood waste from
Michigan and Ohio gets trucked up to a co-generation plant in Flint,
Michigan, where the wood chips are burned to generate electricity.
Simons says that is a good use for the lower-value parts of the trees,
like stumps or branches.
“But the only thing we’ve argued throughout this is that a number of
great logs were in that wood as well, and when you think about the
value that wood can have as lumber or a higher value product like a
railroad tie, it’s worth much more than what a truckload of fuel is
worth.”
Simons admits re-using dead ash trees won’t cut back a lot on the
tremendous costs that homeowners and cities are bearing to deal with
the ash borer, but she argues that turning ash trees into flooring or
furniture could generate a little bit of money instead of just adding
another line onto the bill.
Millions of ash trees are being killed by a tiny green beetle called the emerald ash borer. Some people say all those dead trees shouldn’t be considered waste, so they’re recycling the trees into lumber.
The GLRC’s Rebecca Williams has more:
Transcript
Millions of ash trees are being killed by a tiny green beetle called
the emerald ash borer. Some people say all those dead trees shouldn’t
be considered waste, so they’re recycling the trees into lumber. The
GLRC’s Rebecca Williams has more:
Most of the time, when cities cut down their dead ash trees, they chip
up the trees and have them hauled away. Some people are trying to find
uses for the lumber from the trees instead.
Jessica Simons is with the Southeast Michigan Resource Conservation and
Development Council. It’s a nonprofit group that’s giving out grants to
promote the use of ash wood. Simons says cutting ash logs into lumber
can sometimes save cities money, because they can cut back on the cost
of chipping up and hauling away the trees:
“They’re also aren’t paying for lumber for other city projects because
they’re just paying for that wood to be milled and then they have all
the wood they need for projects like park benches or picnic tables or
sideboards for their trucks.”
Simons says because it’s a relatively new concept some cities have had
trouble finding room to store all of the lumber they’ve made from the
trees, but she says the idea’s still starting to catch on, as cities
look for ways to cut costs.
Adult emerald ash borer (Photo by David Cappaert, Michigan State University, courtesy of the Michigan Department of Agriculture)
