Pathological Thinking

Question 1

Differentiate ID vs Diagnostic

Answer 1

ID: signs present, unique and recognizable
Diagnosis: based on symptoms, no sure signs.

Question 2

Explain deductive reasoning?

Answer 2

based on evidence. logical process.

1. Gather evidence (host spp, location, ecosystem, S&S)
2. apply logic by listing all possible agents and considering the most likely agents first. (short list)

Question 3

What are some different ways disease develops over time?**

Answer 3

• steady state (Decay, DMx and DRx in OG)
• slow build and continual increase (DRA or Dmx in a new stand)
• Peaks at a certain age, then declines (stem rusts)
• classic endemic with periodic wave years. (Stem Rusts, Rhizina, Foliar)

Question 4

What can we do to ensure healthy unstressed trees?

Answer 4

• Promote mix

- Manage density

Question 5

What could be considered the “passive aggressive” approach?

Answer 5

• Alt spp
• delay treatment (JS & rusts) wait till after rust attacks
• Do nothing, if too expensive. Live with losses. Other resources more valuable (fish vs stumping).
• Wait and see if it even happens (DRR)

Question 6

What are the options when launching an offensive

Answer 6

• Harvest early because things are only getting worse
• sanitize (JS and rusts/DMx) clean out the present (time for may june when spores are present.
• innoculum removal (stumping/pushover, burn)
• Minimize infection target (Prune, JS early for atropellis)
• engineering block boundaries (clean boundaries, patch cut RR centres).