Disease could cost black walnut industry millions, forest specialist warns

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Forum topic by Planeman40 posted 11-14-2014 12:32 AM 1137 views 0 times favorited 6 replies Add to Favorites Watch
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1176 posts in 2758 days

11-14-2014 12:32 AM

Topic tags/keywords: walnut disease

Date: November 13, 2014
Source: Kansas State University
Summary: Thousand cankers disease, which kills black walnut trees, has been confirmed in 15 states. Now experts are warning people to avoid moving firewood or lumber this winter to prevent spreading the disease to other states.

Several states, including Kansas, are trying to protect their borders from a little beetle that could cost the black walnut industry millions of dollars. Kansas Forest Service specialists at Kansas State University say you could be spreading the disease without knowing it.

Thousand cankers disease has been confirmed in Colorado, New Mexico, Arizona, Vermont, Nevada, California, Idaho, Washington, Pennsylvania, Tennessee, North Carolina and Virginia. Several quarantines have been established in an attempt to prevent the disease from spreading. States in quarantine include Kansas, Oklahoma, Nebraska, Missouri, Arkansas, Illinois, Indiana, Ohio, Michigan, Wyoming and Montana.

“It’s an interesting disease that requires two parts,” said Ryan Armbrust, a forest health specialist with the Kansas Forest Service. “There’s a small walnut twig beetle that will feed on the twigs of black walnut trees. In doing this, it will spread a fungus that causes cankers and causes the tree’s vascular system to clog up and die.”

The beetle is tiny—about the size of the letter “i” in the word Liberty on a dime. The flight season for the beetle is typically in the warmer months, but it can survive in the tree throughout the year. Since there are currently no viable treatment options, Armbrust says the best defense is to avoid moving black walnut tree firewood or lumber out of an area, especially if it still contains the bark.

“While it may seem safer to move black walnut material in the wintertime, when the beetle isn’t flying around, that beetle could still be contained within that bark. When it warms up in the spring, it could come out,” Armbrust said. ”There really is no safe time of year to move black walnut lumber, especially from an area that has been infested.”

Kansas is home to about 25 million black walnut trees, which are an important part of the economy. The Kansas Forest Service estimates the state would lose at least $160 million in revenue from the lumber and nut production if these trees were destroyed by thousand cankers disease.

-- Always remember: It is a mathematical certainty that half the people in this country are below average in intelligence!

6 replies so far

View jmartel's profile


7890 posts in 2147 days

#1 posted 11-14-2014 12:47 AM

Guess I better increase my stash of walnut then.

-- The quality of one's woodworking is directly related to the amount of flannel worn.

View EPJartisan's profile


1118 posts in 3123 days

#2 posted 11-16-2014 11:30 PM

Crap… thanks for the heads up

-- " 'Truth' is like a beautiful flower, unique to each plant and to the season it blossoms ... 'Fact' is the root and leaf, allowing the plant grow and bloom again."

View whitebeast88's profile


4128 posts in 2188 days

#3 posted 11-16-2014 11:46 PM

yeah i noticed that my supplier went up on his due to disease.he’s still cheaper than the going rate but it still hurts the pocket book.

-- Marty.Athens,AL

View Woodendeavor's profile


276 posts in 2604 days

#4 posted 11-17-2014 12:18 AM

I am in Maryland and it is confirmed on both sides of us, PA and VA. The timber industry is talking about the market being flooded with the raw material and there are a lot of opinions on how to deal with the material. There may be a drop in price as the sick trees get removed but they expect very few trees on the supply side in a few years. So if you think it is expensive now start your stockpile

View paxorion's profile


1107 posts in 2043 days

#5 posted 11-17-2014 01:14 AM

Drop in walnut supply = sad =(

-- paxorion

View bonesbr549's profile


1548 posts in 3064 days

#6 posted 11-17-2014 02:41 AM

A smart feller, might want to invest in some walnut a few thou bf might be worth something soon!

-- Sooner or later Liberals run out of other people's money.

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