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Title: Effect of harvesting season on hybrid poplar coppicing
Author: Strong, Terry F.; Zavitkovskj, Jerry;
Source: In: Hansen, Edward A., ed. Intensive plantation culture: 12 years research. Gen. Tech. Rep. NC-91. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station: 54-57.
Publication Series: Other
Description: A study was begun in 1980 in a 4-year-old planting of P. nigra var. betulifolia x P. trichocarpa to identify the effects of harvesting season on-coppice production. Parts of the plantation were harvested monthly from October 1980 to September 1981. The trees were cut leaving 10 and 30 cm (4 and 12 in) stumps. Coppice measurements were taken 1 year after harvest. Harvesting during the leafless season (October to mid May) positively affected (a) stump survival, (b) height and d.b.h, growth of dominant sprouts, and (c) number of live sprouts/stump taller than 1.37m. Harvesting during the growing season discouraged coppicing. Stump height had no effect on stump survival or growth of dominant sprouts. However, stump height positively affected number of sprouts/stump. Therefore, to concentrate growth on a few sprouts, the stumps should be kept short. The 10 cm (4 in) stumps proved adequate.
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Strong, Terry F.; Zavitkovskj, Jerry 1983. Effect of harvesting season on hybrid poplar coppicing. In: Hansen, Edward A., ed. Intensive plantation culture: 12 years research. Gen. Tech. Rep. NC-91. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station: 54-57.
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