Juglone concentration was measured in soils collected under a 14-year-old black walnut (Juglans nigra L.) plantation containing plots of pure walnut and of walnut mixed with either autumn-olive (Elaeagnus umbellata Thunb.) or European black alder (Alnus glutinosa (L.) Gaertn.). Juglone concentrations declined with soil depth and distance from the walnut tree. Concentrations in autumn-olive-walnut plots were statistically lower than concentrations in European black alder-walnut or pure walnut plots. The concentration of juglone in soil in European black alder-walnut plots was apparently sufficient to cause the onset of black alder mortality.
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Similar content being viewed by others Explore related subjectsDiscover the latest articles and news from researchers in related subjects, suggested using machine learning. ReferencesBrooks, M. G. 1951. Effects of black walnut trees and their products on other vegetation. W.Va. Univ. Agric. Exp. Stn. Bull. 347, Morgantown, 31 pp.
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USDA Forest Service, Forestry Sciences Laboratory, 62901, Carbondale, Illinois
Felix Ponder Jr.
Department of Chemistry, Alabama A&M University, 35762, Normal, Alabama
Shawky H. Tadros
Ponder, F., Tadros, S.H. Juglone concentration in soil beneath black walnut interplanted with nitrogen-fixing species. J Chem Ecol 11, 937–942 (1985). https://doi.org/10.1007/BF01012079
Received: 22 August 1984
Accepted: 18 October 1984
Issue Date: July 1985
DOI: https://doi.org/10.1007/BF01012079
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