Ceratocystis fagacearum in Living and Dead Texas Live Oaks

R. Lewis

doi:10.2737/SO-RN-335

Treesearch

Ceratocystis fagacearum in Living and Dead Texas Live Oaks

Informally Refereed

Authors:

R. Lewis

Year:

1987

Type:

Research Note

Station:

Southern Research Station

DOI:

https://doi.org/10.2737/SO-RN-335

Source:

Res. Note SO-335. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 4 p.

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Download (PDF 61 KB): https://research.fs.usda.gov/download/treesearch/1719.pdf

Abstract

Ceratocystis fagacearum colonized Texas live oaks (Quercus virginiana var. fusiformis) to a depth of 10 annual increments in sapwood, either before or shortly after initial symptom expression. The fungus survived in dead wood up to 12 months after oak wilt caused crown mortality. Both moist wood at the root collar level and dry wood at the d.b.h. level support C. fagacearum survival. The fungus was isolated from dead wood in March, June, September, and October in 2.5 percent of the 3,600 isolation samples used in the study.

Citation

Lewis, R., Jr. 1987. Ceratocystis fagacearum in Living and Dead Texas Live Oaks. Res. Note SO-335. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 4 p.