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Survival of Slash Pine Having Fusiform Rust Disease Varies with Year of First Stem Infection and Severity

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Probabilities of death of young slash pine infected by fusiform rust pathogen varied with timing and severity of infection. Trees in nine slash pine plantations varying widely in site quality and initial number of trees per acre had similar probabilities of death from rust. About 90% of trees with stem infections in the first three growing seasons died by age 15 if the gall spanned more than 50% of the circumference of the stem by age 5. If 50% gall encirclement occurred after age 5, mortality rates dropped to about 30% at age 15. Where first stem infection occurred after the fifth year, probability of death was essentially the same as for rust-free trees. Methods are given for using timing-severity data to estimate future stocking. South. J. Appl. For. 22(2):96-100.
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Document Type: Journal Article

Affiliations: Southern Institute of Forest Genetics, Southern Research Station, USDA Forest Service, Saucier, MS 39574

Publication date: 1998-05-01

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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