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Title: Growth of black walnut trees in eight midwestern states -- a provenance test.
Author: Bey, Calvin F.;
Source: Research Paper NC-91. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Publication Series: Research Paper (RP)
Description: At age six, survival of black walnut trees was not related to latitude of source at six out of eight locations. Trees from as far as 200 miles south of the planting generally grew as large or larger than trees from local or northern sources.
Keywords: Juglans nigra, black walnut, variation, selection, phenology, genetics
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Bey, Calvin F. 1973. Growth of black walnut trees in eight midwestern states -- a provenance test. Research Paper NC-91. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
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