what’s in your woodpile?
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What’s in Your Woodpile?. Gary Johnson & Angela Gupta University of Minnesota Extension. Firewood Regulations. There are restrictions on regulated articles due to the Emerald Ash Borer (EAB) quarantine H ardwood (non-coniferous) firewood is a regulated article - PowerPoint PPT PresentationTRANSCRIPT
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Minnesota First Detectors
What’s in Your Woodpile?
Gary Johnson & Angela Gupta
University of Minnesota Extension
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Minnesota First Detectors
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Minnesota First Detectors
Firewood Regulations
There are restrictions on regulated articles due to the Emerald Ash Borer (EAB) quarantine
Hardwood (non-coniferous) firewood is a regulated article
Regulated articles cannot be moved out of quarantined areas unless accompanied by a Minnesota Department of Agriculture (MDA) certificate
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Minnesota First Detectors
Firewood Regulations
Quarantined Counties
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Minnesota First Detectors
Firewood Regulations
Quarantined Counties
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Minnesota First Detectors
Firewood Regulations
MDA certificates require an active compliance agreement with the MDA or USDA
Under the conditions of a compliance agreement, certificates may be issued for firewood that has been heat treated to specific temperatures in a kiln to render it safe
MDA certified firewood is allowed to move freely around the state
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Minnesota First Detectors
DNR-approved Firewood Required on State- Owned Land
DNR lands have additional firewood regulations. Regardless of any quarantines, firewood must be either:
Obtained from a firewood distribution facility on State-owned land, or
Obtained from a firewood dealer approved by the DNR commissioner (with receipt)
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Minnesota First Detectors
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Minnesota First Detectors
Softwood versus Hardwood
Softwoods have Tracheids (fibers), No Vessels (pores). Many have Resin Canals.
Resin Canals
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Minnesota First Detectors
Softwoods versus Hardwoods
Hardwoods have Fibers and Pores
Pores
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Minnesota First Detectors
Ring Porous versus Diffuse Porous
Large Pores in Earlywood and Small Pores in Latewood = Ring Porous Hardwood
Large, obvious lines are Earlywood.
Smaller,darker heartwood or lighter sapwood lines are Latewood.
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Minnesota First Detectors
Ring Porous Wood: Black Ash
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Minnesota First Detectors
Ring Porous Wood: Bur Oak
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Minnesota First Detectors
Ring Porous Wood: American Elm
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Minnesota First Detectors
Semi Ring Porous: Black Walnut
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Minnesota First Detectors
Ring Porous versus Diffuse Porous
Pores about same size and distributed evenly throughout growth ring = Diffuse Porous.
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Minnesota First Detectors
Diffuse Porous Wood: Basswood
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Minnesota First Detectors
Diffuse Porous Wood: Boxelder
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Minnesota First Detectors
Diffuse Porous Wood: Big Toothed Aspen
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Minnesota First Detectors
“Other” Features: Elm Bark Cross-Section
Layered Bark of American and Rock Elm
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Minnesota First Detectors
“Other” Features: Long-Grain of Elm
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Minnesota First Detectors
“Other” Features of Oak: Rays
Rays
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Minnesota First Detectors
Versus, No Rays in Ash
Cracks or Checks, but not Rays
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Minnesota First Detectors
“Other” Features: Elm and Hackberry
Both Have Wavy (tiretrack) summerwood
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Minnesota First Detectors
“Other” Features: Elm and Hackberry
Hackberry has Corky Ridges on Bark, no Layered Cross-Section
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Minnesota First Detectors
“Other” Features: Red vs. White Oak
Sodium Nitrite turns White Oak Heart Wood Blue to Purple
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Minnesota First Detectors
“Other” Features: Black Walnut
Medium brown to dark chocolate heartwood.
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Minnesota First Detectors
Let’s Quiz the Log Splitter!
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Minnesota First Detectors
Which log is hardwood?
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Minnesota First Detectors
Which log is hardwood?
0%
0% 1. Log on the left2. Log on the right
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Minnesota First Detectors
What is this?
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Minnesota First Detectors
What is this?
0%
0%
0%
0%
0% 1. Oak2. Ash3. Walnut4. It’s hardwood; that’s all I need to know.5. I don’t know.
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Minnesota First Detectors
What is this?
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Minnesota First Detectors
What is this?
0%
0%
0%
0%
0% 1. Maple2. Oak3. Walnut4. Pine5. Don’t know.
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Minnesota First Detectors
What is It?
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Minnesota First Detectors
0%
0%
0%
0%
0%
What is it?
0 of 30
1. Hackberry
2. Chokecherry
3. Crabapple
4. River Birch
5. Chokeberry
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Minnesota First Detectors
What is It?
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Minnesota First Detectors
What is it?
0%
0%
0%
0%
0%
0 of 30
1. Birch
2. Cottonwood
3. Big-Toothed Aspen
4. Silver Maple
5. Black Cherry
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Minnesota First Detectors
What is It?
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Minnesota First Detectors What is it?
0%
0%
0%
0%
0%
0 of 30
1. Black Walnut
2. Buckthorn
3. Bur Oak
4. Boxelder
5. Ironwood
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Minnesota First Detectors
What is It?
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Minnesota First Detectors What is it?
0%
0%
0%
0%
0%
0 of 30
1. White Oak
2. Hickory
3. Hackberry
4. Winged Euonymus
5. Bur Oak
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Minnesota First Detectors
What is It?
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Minnesota First Detectors
0%
0%
0%
0%
0%
What Is It?
1. Cottonwood2. Green Ash3. Hackberry4. Elm 5. Linden
0 of 30
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Minnesota First Detectors
What is It?
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Minnesota First Detectors
0%
0%
0%
0%
0%
What is it?
0 of 30
1. Elm
2. Boxelder
3. Silver Maple
4. Ironwood
5. Linden
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Minnesota First Detectors
What is It?
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Minnesota First Detectors
0%
0%
0%
0%
0%
What is it?
0 of 30
1. Black Pine
2. Black Cherry
3. Austrian Pine
4. Douglas Fir
5. White Cedar
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Minnesota First Detectors
What is It?
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Minnesota First Detectors
0%
0%
0%
0%
0%
What is it?
0 of 30
1. White Cedar
2. Sugar Maple
3. Ponderosa Pine
4. Black Cherry
5. Douglass Fir
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Minnesota First Detectors
What is It?
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Minnesota First Detectors
What is it?
0%
0%
0%
0%
0%
0
30
1. Linden
2. Sugar Maple
3. Black Ash
4. Elm
5. Green Ash
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Minnesota First Detectors
Questions…
Gary JohnsonUM Urban & Community Forester
University of Minnesota Extension Foresters: Angela Gupta, Rochester Mike Reichenbach, Cloquet Gary Wyatt, Mankato