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Crown Release and Fertilization of Natural Black Walnut

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In a natural mixed hardwood stand, black walnut trees that received crown release only or received crown release and fertilized with nitrogen only or in combination with phosphorus and potassium were significantly larger than nonreleased trees after 11 years. A large part of the growth difference was due to release. Larger diameter trees benefitted more from crown release than smaller trees. The best response to fertilization was by trees receiving the highest amount of nitrogen and in the diameter class ranging from 14.6-18.7 in. North. J. Appl. For. 3:153-155, Dec. 1986.

Document Type: Journal Article

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

Publication date: 1986-12-01

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.
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