Growth response of black walnut to interplanted trees |
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| Authors: | Richard C Schlesinger Robert D Williams |
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| Institution: | 1. North Central Forest Experiment Station, Southern Illinois University, Carbondale, IL 62901, U.S.A.;2. Bedford, IN 47421 U.S.A. |
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| Abstract: | Analyses of black walnut tree diameters 13 years after planting showed that interplanting autumn-olive, black locust, and European alder increased walnut tree growth, but only at certain locations. Interplanting autumn-olive resulted in increases of 56 to 351% at four of five locations and all species resulted in doubled walnut growth on an upland site. The interaction between treatment and location indicates that a fuller understanding of site and nurse species characteristics is needed to obtain the potential benefits of mixed plantings. |
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