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Oak Wilt In Virinia
Four successive years of aerial surveys have shown that oak wilt, a destructive fungus disease, is distributed in the forests and woodlots of. at least eight northwestern and two southern Virginia counties. By far the heaviest concentration is known to occur in the counties borderipg West Virginia from Bath County northward through Frederick County.
The 1956 aerial survey indicated no particular increase in range of infection over past years, but was noteworthy because it failed to show additional new infections in the areas in Bath, and Highland counties where heavy infection was noted in 1953 and 1954. TTiis failure to note new infections following repeated flights over suspect areas in these two counties gives us hope for the eventual success of the control program which has been in progress in Virginia during the past two years. Fiftysix hours were spent in the air and portions of 19 counties were surveyed. Areas of known heavy infection were surveyed twice and in one case three time during July and August.
Thirty-one infection spots were
66.3%