Laminated Root Rot Management

That is established mycelia of this fungus are essentially permanent so the best course is to minimize losses by managing tree species that can be.

Laminated root rot management. By contrast healthy trees blown over by wind have a large. Remove infected trees from infection centers and susceptible hosts from a 50 75 foot buffer strip then 1 replant with resistant conifers or immune hardwoods or 2. The fungus spreads underground through tree root systems and survives for many decades in dead roots and stumps. Root balls form when decayed roots break near the root collar leaving an abnor mally small ball of roots on fallen trees.

11 00 am 11 15 am introduction to laminated root rot management actions taken at the sauf 11 15 am 12 00 am historical account of treatment assessment findings and recommendations over 15 yrs 12 00 am 12 15 am. The tree dies directly or as a result of windthrow. It is estimated that laminated root rot reduces timber production. The death is also accelerated by wind that throws the trees down.

Root infections eventually lead to root and lower bole decay. Laminated root rot is a major management problem in some of the most productive forests in north america. Management control of laminated root rot is best attained at the time of final harvest. The trees die from failure to take up water and nutrients because of the main roots are decayed.

Trees are infected and killed regardless of individual vigor. There are usually discrete infection centers with this disease. Laminated root rot should be considered a disease of the site. Recommended control for the disease is to cut all hosts in infection centers along with a 50 foot buffer around each and either 1 replant the site.

It can create trees with hollow butts which may continue to provide habitat when they fall. Several approaches can be used. Laminated root rot creates short term snags of any size and all sizes of down wood by killing or decaying the root system and butts of host trees. Filmed by patrick culbert university of british columbia faculty of forestry.