Saturday, October 29, 2011

The Asian Longhorned Beetle and Other Invasive Pests That Threaten Our Environment in the North East

!±8± The Asian Longhorned Beetle and Other Invasive Pests That Threaten Our Environment in the North East

Asian Longhorned Beetle.

I was one of the people sent to Brooklyn NY when Asian Longhorned Beetles were first discovered. Even for someone who is familiar with the damage done by Hemlock Woolly Adelgid and other invasive species, I was horrified by what I saw. The Asian Longhorned Beetle is the most destructive insect threat to our environment and economy that has ever hit the USA, and nothing we spend to stop this pest now is too much. It has been reported that in the last Asian Longhorned Beetle outbreak in China this pest was responsible for destroying the equivalent amount of trees as all the forested land on the east coast from Nova Scotia Canada to Florida, and it is native to China. No one knows why Asian Longhorned Beetles suddenly became such a problem in its native home. One theory is that a predator or predators were lost or greatly reduced due to a change in habitat. Others surmise that it is due to the planting of favorable species in an effort to produce wood from fast growing trees like Poplar.

Hosts of this pest recognized by APHIS. (Animal Plant Health Inspection Service)

In the United States the beetle prefers maple species (Acer spp.), including boxelder, Norway, red, silver, and sugar maples. Other preferred hosts are birches, Ohio buckeye, elms, horsechestnut, and willows. Occasional to rare hosts include ashes, European mountain ash, London planetree, mimosa, and poplars. And from personal observation Rose of Sharon is also a host.

What can we do?

Let us start with how invasive species move and escape quarantines.

The number one long distance movement from one area to another is that we give them a ride. Invading species travel on furniture, cars, boats, plants, firewood and anything else we move. For shorter distances animals, birds, wind, and the natural movement of a pest can be added to our helping hand.

Education is the number one defense. It amazes me that after twenty years or so of watching the spread of Hemlock Woolly Adelgid that there are still the amount of people who have never heard of this pest. We need to do a lot better job of spreading the word about Asian Longhorned Beetle then we did for Hemlock Woolly Adelgid.

This is not a political writing so I shall refrain from getting into that subject, after you forgive me this little rant. Back in the eighties we were penny wise and pound-foolish. I was working for the State of CT then as an inspector and dealt frequently with the federal inspectors responsible for keeping us safe from invading pests. I watched as the number of people who were assigned to inspecting incoming cargo dropped drastically. These people were not making that much, compared to the millions and maybe billions that these pests will cost now they are loose. Of course there is no guarantee that these inspectors would have caught Asian Longhorned Beetle, Sudden Oak Death, Emerald Ash Borer, and a host of others, before they escaped the ports to destroy our forests, city trees and landscapes, but they might have. I knew a lot of these inspectors and know that they worked hard protect us from invading species. I would rather pay an inspector's salary then someone to cut down all the trees in a city like Worcester Ma, or Brooklyn NY.

One does not always save by not spending so lets not be penny wise and pound-foolish in our fight to control these invasive species. Let your representatives know that you do not consider spending money preventing new invaders or controlling the ones that are here now, pork barrel spending. If the Asian Longhorn Beetle escapes into the Maple Syrup and timber growing areas of New England the money we could have spent on eradication will seem so trivial.

Other Invasive Species.

Hemlock Woolly Adelgid.

Hemlock Woolly Adelgid is still on the move. Look for white cottony masses, like the head of Q-tip only smaller, at the base of the needles. Unlike the Asian Longhorned Beetle Hemlock Woolly Adelgid only attacks one tree species. Hope for controlling this pest with introduced predators is still a possibility. Eventually Hemlock Woolly Adelgid will be everywhere, but slowing the spread will possibly allow scientists time to find new predators or ways to make the ones already introduced more effective in time to save some of our Hemlock forests.

Some people think that the colder temperatures of northern New England will stop this invader, but I would not put much stock in this theory. The Hemlock Woolly Adelgid survives quite well in the mountains of Japan where low temperatures are equivalent to our northern forests. Even though sudden cold snaps can reduce the populations by over 90%, some of these insects do survive. The surviving population then will have a greater chance of producing young with the same cold tolerance. So cold temperatures may slow down the spread but they are unlikely to stop it.

Emerald Ash Borer.

Emerald Ash Borer only attacks ash trees and not yet found in NH. Emerald Ash borer has been found in NY state. Though not as horrific as Asian Longhorn Beetle Emerald Ash Borer is still a serious pest. Emerald Ash Borer does have some native predators.

Lily Leaf Beetle.

Lily Leaf Beetle attacks Asian and native true Lilies, not Day Lilies. The Lily leaf beetle can be controlled in the landscape with pesticides, and there is encouraging research on introducing predators.

Sudden Oak Death.

A variety of the disease Phytophthora, this disease is has not been found yet in NE. This disease can travel in any species of Rhododendron. Nurseries and wholesalers are aware of this problem and there is a quarantine, so the most likely introduction will be some unknowing home owner bringing small cuttings or plants to plant here from their home in CA. Rhododendrons do not show obvious signs of this disease so it is very important not to move any of this species out of the quarantined area.

Winter Moth.

This pest went under the radar for years. The winter moth is much like our native Loopers or inchworms and the damage looks the same. You will first become familiar with Winter Moth when you see moths flying around lights from November to early January, none of our native species fly in the winter. Winter moth has cycles of outbreaks and has the potential to cause a lot of damage in bad years. Winter Moth will not usually kill a tree in one defoliation unless it is otherwise stressed. 2009 has been a particularly bad year around Topsfield MA. I have not seen Winter Moth in NH yet, but I am sure it is here.

European Chafer.

This is another insect that has white grub larvae bound and determined to eat your lawn. The spread of this pest unfortunately seems inevitable. The European Chafer does have some native predators that help a bit. As with Japanese beetle it takes a certain number of grubs per square foot to have noticeable damaging effects on your turf. It is a waste of money and pesticides to treat your lawn if pest populations are not at damaging levels. Also the more a pesticide is used, the more likely that a pest will develop resistance or the chemical will become a problem to the environment and be banned or restricted. So please check and make sure you have a problem in need of pesticides before you treat.

Elongate Hemlock Scale and Circular Hemlock Scale.

These two scale are already in NE and NH. Both of these pests can Kill Hemlocks and have been a real problem in CT. Less noticeable than Hemlock Woolly Adelgid. If you see a general stippling and yellowing of needles, you should check underneath for this pest. There are predatory wasps that attack these scales, so be very careful of your choice of pesticides to control other landscape pests. I have seen huge outbreaks of scale where the use of broad spectrum insecticides have killed off these wasps. Do not move hemlocks without checking the proper authorities to make sure you are not in an area that has either of these pests.

Sirex Woodwasp.

Has been found in Pennsylvania and Vermont

There are other species that have either established themselves beyond hope of control, failed at present to establish as a problem or have been or thought to have been eradicated. Some of these are the Brown tail moth, Japanese Cedar Longhorned beetle, Gypsy moth, Red pine scale, Red Wax Scale (Will not survive outside a greenhouse or possibly a home in our area), and many others.


The Asian Longhorned Beetle and Other Invasive Pests That Threaten Our Environment in the North East

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Friday, October 21, 2011

Traps to Avoid If You Want Perfect Maple Sugar Candy

!±8± Traps to Avoid If You Want Perfect Maple Sugar Candy

Maple sugar candy is one of Nature's little-known gifts. It has three times the sweetening power of cane sugar. Maple syrup is that rich in sugar because it 43 gallons of maple sugar sap need to be boiled down in order to make one gallon of maple syrup.

With an ingredient that sweet, making maple sugar candy at home is extremely rewarding...as long as you can avoid wasting many jugs of maple syrup trying to get it to turn out right. One common mistake is that people think making maple sugar is just like making fudge. Here are a couple tricks I learned that result in less frustration and more great maple candy every time.

First, don't use a marble slab for cooling maple sugar candy. Sure, it works great for fudge-maybe even for maple fudge-but maple candy is a different bird. A medium or small salad bowl works best for the cooling and stirring process.

Now that you're using the bowl, NEVER stop stirring once you've started. You've probably noticed that fudge cools off and hardens up slowly. But if you've ever made maple sugar candy, you'll know that the maple reaches a point where it just seizes up and becomes solid. In a nutshell, you have to stir until the maple is completely hardened and is very light in color.

Also, don't put the finished maple candy in a container until it has cooled off completely. It gives off steam, and condensation can build up. If you wait for about an hour to put it in a container, you'll have maple candy that can be good for weeks.


Traps to Avoid If You Want Perfect Maple Sugar Candy

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