DRA Management

Question 1

How is DRA managed in Dry interior? what about ICH?

Answer 1

• If found in dry interior, no management necessary

- If found in ICH, stump if at all possible. Plant alt spp. if ecologically suitable.

Question 2

What can be done at harvest/regen to manage DRA?

Answer 2

• Get stumps out of ground via stumping / pushover harvest
• Alternate species (50%-100%)
• Conifers (Lw Cw)
• Harwoods
• Pines

Question 3

What fungal antibiotic does DRA produce?

Answer 3

sporasol

Question 4

What is done at JS for DRA in young stands?

Answer 4

Be very cautious if you can see it at all. Armillaria can go into a flare up in cut stumps which will quickly increase in strength and start killing.
- Avoid brushing (If needed, make sure it is done early to reduce flare up)
Low - space of you feel necessary but favor Lw Cw as leave trees.
Mod - only if greater than max density
High - do nothing. Accept reduced stocking. Potential rehab.

Question 5

Where is partial harvest ok?

Answer 5

• On the coast it should be ok as long as trees are mature.
• not for ICH
• In other zones, be very cautious. If you had to, do patch cuts and remove innoculum. Really stress Lw Cw as leave trees (less than 20% susceptible)

Question 6

How do we manage for DRA on the coast?

Answer 6

No management because mortality drops off after 15 years age.
-mix spp. if your worried.