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Determination of growth loss of Pinus taeda L. caused by Heterobasidion annosus (Fr.) Bref.
Author(s) -
Bradford B.,
Alexander S. A.,
Skelly J. M.
Publication year - 1978
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1978.tb01459.x
Subject(s) - biology , pinus <genus> , botany , loblolly pine , significant difference , horticulture , root rot , woody plant , mathematics , statistics
The root system of 350 loblolly pine trees in 14 plots were excavated utilizing a bulldozer and evaluated according to the annosus root rot (Heterobasidion annosus) symptom expression of the roots, i. e. resin soaked and stringy. The annual increments of the healthy (<1% colonized) and diseased (<1% colonized) groups of trees were compared for each of the last five years growth. There was a significant growth difference between healthy and diseased trees for each of these last five years at about 4% per year or about 19% for the five year total.