Incidence of decay fungi in stumps of two thinned western larch stands in northeastern Oregon.

Gregory M. Filip; Catherine Parks; Kenneth W. Seidel; Frances F. Lombard

doi:10.2737/PNW-RN-468

Treesearch

Incidence of decay fungi in stumps of two thinned western larch stands in northeastern Oregon.

Informally Refereed

Authors:

Gregory M. Filip, Catherine Parks, Kenneth W. Seidel, Frances F. Lombard

Year:

1987

Type:

Research Note

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RN-468

Source:

Res. Note PNW-RN-468. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 6 p

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Abstract

Incidence of decay fungi was measured in stumps from two thinned western larch (Larix occidentalis Nutt.) stands (9 and 15 years after thinning), one precommercially thinned and one commercially thinned, in northeastern Oregon. Ten species of decay fungi were positively identified from 180 stumps. Two root pathogenic species, Heterobasidion annosum (Fr.) Bref. and Armillaria obscura (Pers.) Herink Roll-Hansen, were found at relatively low frequencies. Most of the decay in the stumps was caused by either Fomitopsis pinicola (Swartz ex Fr.) Karst. or Trichaptum abietinum (Dicks, ex Fr.) Ryv., which normally are saprophytic wood decomposers.

Keywords

Decay fungi, thinning, western larch, Oregon

Citation

Filip, Gregory M.; Parks, Catherine A.; Seidel, Kenneth W.; Lombard, Frances F. 1987. Incidence of decay fungi in stumps of two thinned western larch stands in northeastern Oregon. Res. Note PNW-RN-468. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 6 p