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Improving Shortleaf Seed Production Areas in Missouri

Until now insufficient information on the effect of stand conditions on seed production has made it difficult to prescribe specific treatments for proposed shortleaf pine seed production stands in Missouri. To get the needed information, the Central States Forest Experiment Station began a study in 1954 to compare seed production of shortleaf pine stands thinned to different densities, by different methods, and with different amounts of understory hardwoods. This study showed that stands selected for seed production should be selectively thinned, leaving 25 to 35 square feet of basal area for the largest and best seed trees in the stands . All competing understory and overstory hardwoods should be removed to increase seed production and to keep the stands open and seed trees accessible.


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Author(s): Robert E. Phares

Publication: Tree Improvement and Genetics - Central States Forest Tree Improvement Conference - 1960