Quick decline of macadamia trees: association with Xylaria arbuscula |
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| Authors: | W H KO R K KUNIMOTO |
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| Institution: | Department of Plant Pathology, Beaumont Agricultural Research Center, University of Hawaii, Hilo. Hawaii 96720, USA |
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| Abstract: | Some macadamia trees in a commercial orchard on the island of Hawaii showing symptoms of quick decline had club-shaped fruiting bodies of Xylaria arbuscula on the trunk. X arbuscula was consistently isolated from diseased wood and was shown to kill branches of healthy macadamia trees on inoculation. Trunk infection by this pathogen leading to girdling resulted in a more rapid decline than would be expected with root infection by soil-borne pathogens. |
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