. Annual report 1953. Forests and forestry Southern States. regeneration can be obtained if proper techniques are applied—often at small cost. In either case it is most important that we develop our knowledge to the point where successful regeneration can be assured. The Station's program includes regeneration studies for the major southern pines and also for some important minor species. Some progress is also being made on the problem of regenerating desirable hardwood species in view of their special importance to a number of primary and secondary forest industries. Timing of Release Importa
. Annual report 1953. Forests and forestry Southern States. regeneration can be obtained if proper techniques are applied—often at small cost. In either case it is most important that we develop our knowledge to the point where successful regeneration can be assured. The Station's program includes regeneration studies for the major southern pines and also for some important minor species. Some progress is also being made on the problem of regenerating desirable hardwood species in view of their special importance to a number of primary and secondary forest industries. Timing of Release Important in Cone Crop Stimulation Timing of the cut has an important bearing on the amount of seed available for natural regeneration. Cutting in good seed years or im- mediately after the annual peak in seedfall usually assists regeneration. But now that we know seed production can be increased by release of seed trees in advance of cutting, time assumes even greater significance. Last year's report of the Station explains that seed production of loblolly pine could be increased very significantly by crown release of the seed trees several years in advance of logging. Further information, portrayed in figure 1, shows that the timing of the release cutting deter- mines whether the stimulated crop will be the third or fourth annual cone crop after cutting. In southeastern Virginia, for example, it is safe to count on an increase in the third succeeding cone crop if the trees are released before the end of May. Released trees continue to produce larger crops for at least 2 more years. There is therefore at least 3 years' leeway in the time when a fresh seedbed, created by logging, can be made to coincide with larger amounts of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southeastern Forest Experiment S
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Keywords: ., bo, bookcentury1900, booksubjectforestsandforestrysouthernstates
