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Title: Sphaeropsis Shoot Blight
Author: Pokorny, Jill D.;
Source: S-FS-01-98. Newtown Square, PA:U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry
Publication Series: S-FS
Description: Sphaeropsis shoot blight, formerly called Diplodia shoot blight, is worldwide in distribution and can infect many conifer hosts. Although many pine species are reported hosts, this disease causes severe damage only to trees that are predisposed by unfavorable environmental conditions. Non-native, exotic pine species growing outside their natural range are especially vulnerable to attack. Other predisposing environmental factors include poor site, drought, hail or snow damage, compacted soils, excessive shading, insect activity or other mechanical wounding. In the north-central United States, the most common hosts are Austrian, Scotch, mugo, red and jack pines grown in ornamental and windbreak plantings.
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Pokorny, Jill D. 1998. Sphaeropsis Shoot Blight. S-FS-01-98. Newtown Square, PA:U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry
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