DRT

Question 1

What are the range and hosts of tomentosus?

Answer 1

- Central BC
Attacks 
Sx (high)
Pl (mod) if with Sx
All others tolerant/resistant

Question 2

How do site series effect tomentosus?

Answer 2

• Dry, often absent due to no Sx
• zonal - dry, most abundant due to spruce under stress
• wet sites, less common due to anaerobic conditions

Question 3

How does DRT spread?

Answer 3

-similar to DRL but spores can infect small surface roots.

Question 4

What are some examples of DRT damage

Answer 4

Mortality, reduced increment and decay.

• often with spruce beetle (stress)
• windthrow (spruce tend to blow over and pine tend to stand dead)

Question 5

Typical diagnostic symptoms of DRT

Answer 5

• Windthrow (Sx criss cross) but pine die standing.
  
  • Root balls (roots heaviliy damaged)
• Decay
  
  • Red brown stain, canoes, honeycomb
• Fruiting body
  
  • mini schwenitzii with a yellowish ring on top
  • present in fall on about 20% of infected trees

Question 6

What are canoes / honeycomb

Answer 6

Features of tomentosus decay (white rot)
Canoes : long vertical white pits
Honeycomb : decayed wood cross section looks like a honeycomb

Question 7

What are the other DR’s?

Answer 7

• Innosus tomentosus -DRT
• H. Annosum - DRN
• P. Schweinitzii - DRS
• Rhizina undulata - DRR
• Black stain - DRB