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What’s in Your Woodpile?

What’s in Your Woodpile?. Gary Johnson & Angela Gupta University of Minnesota Extension. Approved Firewood Required on State- Owned Land. Obtained from firewood distribution facility on State-owned land Obtained from a firewood dealer approved by the DNR commissioner

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What’s in Your Woodpile?

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  1. What’s in Your Woodpile? Gary Johnson & Angela Gupta University of Minnesota Extension

  2. Approved Firewood Required on State- Owned Land • Obtained from firewood distribution facility on State-owned land • Obtained from a firewood dealer approved by the DNR commissioner • DNR commissioner approved firewood.

  3. RF-#### HT Exp DATE Firewood Quarantine • Firewood quarantines • State • Federal • International • DNR

  4. Softwood versus Hardwood Resin Canals Softwoods have Tracheids (fibers), No Vessels (pores). Many have Resin Canals.

  5. Softwoods versus Hardwoods Pores Hardwoods have Fibers and Pores

  6. 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.

  7. Ring Porous Wood: Black Ash

  8. Ring Porous Wood: Bur Oak

  9. Ring Porous Wood: American Elm

  10. Semi Ring Porous: Black Walnut

  11. Ring Porous versus Diffuse Porous Pores about same size and distributed evenly throughout growth ring = Diffuse Porous.

  12. Diffuse Porous Wood: Basswood

  13. Diffuse Porous Wood: Boxelder

  14. Diffuse Porous Wood: Big Toothed Aspen

  15. “Other” Features: Elm Bark Cross-Section Layered Bark of American and Rock Elm

  16. “Other” Features: Long-Grain of Elm

  17. “Other” Features of Oak: Rays Rays

  18. Versus, No Rays in Ash Cracks or Checks, but not Rays

  19. “Other” Features: Elm and Hackberry Both Have Wavy (tiretrack) summerwood

  20. “Other” Features: Elm and Hackberry Hackberry has Corky Ridges on Bark, no Layered Cross-Section

  21. “Other” Features: Red vs. White Oak Sodium Nitrite turns White Oak Heart Wood Blue to Purple

  22. “Other” Features: Black Walnut Medium brown to dark chocolate heartwood.

  23. Let’s Quiz the Log Splitter!

  24. Which log is hardwood?

  25. Which log is hardwood? • Log on the left • Log on the right

  26. What is this?

  27. What is this? • Oak • Ash • Walnut • It’s hardwood; that’s all I need to know. • I don’t know.

  28. What is this?

  29. What is this? • Maple • Oak • Walnut • Pine • Don’t know.

  30. What is It?

  31. What is it? Hackberry Chokecherry Crabapple River Birch Chokeberry 0 of 30

  32. What is It?

  33. What is it? • Birch • Cottonwood • Big-Toothed Aspen • Silver Maple • Black Cherry 0 of 30

  34. What is It?

  35. What is it? Black Walnut Buckthorn Bur Oak Boxelder Ironwood 0 of 30

  36. What is It?

  37. What is it? White Oak Hickory Hackberry Winged Euonymus Bur Oak 0 of 30

  38. What is It?

  39. What Is It? • Cottonwood • Green Ash • Hackberry • Elm • Linden 0 of 30

  40. What is It?

  41. What is it? • Elm • Boxelder • Silver Maple • Ironwood • Linden 0 of 30

  42. What is It?

  43. What is it? Black Pine Black Cherry Austrian Pine Douglas Fir White Cedar 0 of 30

  44. What is It?

  45. What is it? White Cedar Sugar Maple Ponderosa Pine Black Cherry Douglass Fir 0 of 30

  46. What is It?

  47. What is it? 30 • Linden • Sugar Maple • Black Ash • Elm • Green Ash 0

  48. Questions… • Gary Johnson UM Urban & Community Forester University of Minnesota Extension Foresters: • Angela Gupta, Rochester • Mike Reichenbach, Cloquet • Gary Wyatt, Mankato

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