Growth of Black Walnut Seedlings During the First Season After Transplanting
Seedlings (families) from 18 parent trees were grown in the Union County, Illinois, State Tree Nursery in 1970. Twelve parent trees from several locations in southern Illinois and six from Kentucky, Tennessee, and Arkansas were used in the study. The growth rate and form of parent trees are best described as average or random; no minimum standards for plus-tree selection were imposed. The seedlings were lifted in the fall and stored in a cooler at about 2 ° C. until spring. Before planting, taproots of the seedlings were pruned to 25 cm. In general, the seedlings had few lateral roots.
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Author(s): Calvin F. Bey
Publication: Tree Improvement and Genetics - Central States Forest Tree Improvement Conference - 1972