Abstract

Quick decline is the most serious disease of macadamia trees in Hawaii. Some macadamia trees showingsymptoms of quick decline in commercial orchards on the island of Hawaii did not display macroscopic fungal fruitingbodies on the trunks. Acremonium recifei was consistently isolated from bark and wood obtained from trunks of thesetrees. The fungus was demonstrated to kill twigs of healthy macadamia trees when these twigs were artificiallyinoculated. Results suggest that trunk infection by A. recifei may lead to girdling, resulting in a rapid decline ofmacadamia trees.

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