Differences among shortleaf pine seed sources on the Ozark and Ouachita National Forests at age ten (2012)Studyvin, C., & Gwaze, D. (2012). Differences among shortleaf pine seed sources on the Ozark and Ouachita National Forests at age ten. Proceedings of the 16th biennial southern silvicultural research conference. e-Gen. Tech. Rep. SRS-156. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station. 329-333. Retrieved from http://www.treesearch.fs.fed.us/pubs/41519 Progeny test planting of shortleaf pine (Pinus echinata Mill.) was started on the National Forests in Arkansas in 1978, and continued through 1990. A series of progeny tests established on the Ouachita and Ozark National Forests were analyzed to determine if significant differences exist between the three seed sources in Arkansas (the East Ouachita, the West Ouachita and the Ozarks) for height, diameter and survival at age 10. Sixteen tests were from the Ouachita National Forest and fourteen from the Ozark National Forest. Significant differences among seed sources for height and diameter existed, but not for survival. Families within seed sources were highly significant for all traits, indicating that family selection will be effective http://www.treesearch.fs.fed.us/pubs/41519
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