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Ground Cover Management Can Revitalize Black Walnut Trees

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Many black walnut plantations have been successfully established in recent years, but not all have continued to grow well after establishment. In one 10-year-old plantation in southern Illinois, elimination of the fescue sod understory by annual cultivation for 5 years produced trees that were 69% larger in diameter at age 15 than those in untreated areas. In a second plantation, 17 years old at the time of treatment, elimination of the fescue by either cultivation or the establishment of hairy vetch resulted in a 250% increase in diameter growth over the next 3 years. For many slow-growing black walnut plantings, some form of understory vegetation management will be required to meet the goals of short-rotation forestry. North. J. Appl. For. 3:49-51, June 1986.
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Document Type: Journal Article

Affiliations: North Central Forest Experiment Station, Forestry Sciences Laboratory, Carbondale, IL 62901

Publication date: 01 June 1986

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