Analysis reports reduced growth in slash pines affected by Polyporus tomentous fungus, suggesting removal of infected trees.
Polyporus tomentous var. circinatus root rot was present in 29 percent of 182 trees with basal cankers in two plantations at Athens, Georgia. Five-year radial growth was reduced up to 24 percent by this root rot. Tree-to-tree spread of the fungus via roots was not shown. Sporophores of P. tomentosus var. circinatus appeared in autumn on infected trees. Removal of all basal cankered slash pines during thinning should be considered because of ths disease.
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J. S. Boyce (1967) studied this question.
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