The Adaptability of Geographic Strains of Shortleaf Pine to Littleleaf Sites
Although the botanical range of shortleaf pine covers a wide area in the South and Southeast, littleleaf disease occurs only on approximately one-third of the commercial range of the species east of the Mississippi River. The wide geographic range of shortleaf pine from Texas and Oklahoma in the West and Pennsylvania and New Jersey in the East suggests the possible existence of strains adapted to a variety of site and climatic conditions.
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Author(s): W. A. Campbell
Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1953