FUSARIUM COLLAR ROT AND FOLIAR BLIGHT OF AGLAONEMA IN HAWAII

A new and destructive collar rot and foliar blight of Aglaonema commut atum in Hawaii was caused by Fusarium subglutinans. Collar rot was typ ified by chlorosis, wilting of older leaves, lodging of plants, and ev entual plant death. Foliar blight started with elliptical dark leaf sp ots with chlorotic borders that expanded into petioles and stems. Root s were generally unaffected. A. c. var. maculatum was extremely suscep tible to infection, whereas cultivars Emerald Beauty and Silver Queen were very tolerant.