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Arboriculture & Urban Forestry Online
Volume 7, Issue 5 — May 1981

Effects of Drought-Stress and Wounding on Cytospora Canker Development on Colorado Blue Spruce    (View PDF)

Lewis K. Kamiri and Franklin F. Laemmlen

Abstract: Trees subjected to drought-stress in the greenhouse following inoculation with inoculum produced from monoascospore cultures developed significantly (p = 0.001) more cankered branches than did inoculated, non-droughtstressed trees. Inoculation of drought-stressed and nondrought- stressed trees with inoculum produced from monoconidium cultures did not cause infection. No infection with either inoculum occurred in the absence of wounding.


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