Early Growth of Black Walnut Trees From Twenty Seed Sources

Calvin F. Bey; John R. Toliver; Paul L. Roth

Treesearch

Early Growth of Black Walnut Trees From Twenty Seed Sources

Informally Refereed

Authors:

Calvin F. Bey, John R. Toliver, Paul L. Roth

Year:

1971

Type:

Research Note

Station:

Northern Research Station

Source:

Research Note NC-105. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

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Download (PDF 1.10 MB): https://research.fs.usda.gov/download/treesearch/11283.pdf

Abstract

Early results of a black walnut cornseed source study conducted in southern Illinois suggest that seed should be collected from local or south-of-local areas. Trees from southern sources grew faster and longer than trees from northern sources. Trees from southern sources flushed slightly earlier and held their leaves longer than trees from northern sources. For the 1969 season, height growth rate was best explained by the rainfall pattern. Diameter growth rate was more closely related to air and soil temperatures than to rainfall and soil moisture.

Keywords

black walnut, Illinois, seed source

Citation

Bey, Calvin F.; Toliver, John R.; Roth, Paul L. 1971. Early Growth of Black Walnut Trees From Twenty Seed Sources. Research Note NC-105. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station