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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Issue 58 (1963) → Freezing Temperatures Affect Survival of Planted Loblolly and Slash Pine Seedlings

Freezing Temperatures Affect Survival of Planted Loblolly and Slash Pine Seedlings

During the 1961-62 shipping and planting season, Louisiana was subjected to un-usually low temperatures for an extended period of time. From January 9 through 14, statewide temperatures ranged from 32° to 0° F., during which time both tree planters and nurserymen had seedlings frozen in bales. Because of lack of available information on expected survival, the following study was initiated. Regularly baled slash and loblolly seedlings were placed in cold storage at three temperature perature levels: 34°, 20°, and 0° F. After initial storage of 48 hours one bale of each species at each of the three temperatures was removed from cold storage and allowed to thaw gradually at air temperature. From each of the bales 100 slash and 200 loblolly seedlings were taken at random and outplanted according to standard field practice. The same process was repeated after 1, 2, 3, and 4 weeks of cold storage. Each treatment was then counted at 30-, 60-, and 90-day intervals after planting, with the 34° treatment as the control.


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Author(s): Roger R. Byrd, Charles E. Peevy

Publication: Tree Planters' Notes - Issue 58 (1963)