Diseases of Anthurium

Abstract

Anthuriums, characterized by a colorful spathe and spadix, are neotropical ornamentals belonging to the family Araceae. Nineteen Anthurium species with horticultural significance and value in breeding programs have been described, and among these, hybrids of two Anthurium species, Anthurium andraeanum Linden ex André and A. antioquiense Engler, are predominantly used in cut flower and/or potted plant production, respectively. Numerous hybrids of A. andraeanum Hort. and other species are grown throughout the tropics and are characterized by unique shapes and colors and a long shelf life. Bacterial pathogens have caused the most devastating diseases of anthurium and have limited the production of susceptible hybrids in Florida, the Caribbean, and the Pacific islands. Fungal and fungal-like diseases include anthracnose (black nose), foliage, and stem and root rots caused by Phytophthora nicotianae, P. tropicalis, and Rhizoctonia solani. Viral diseases have been described but do not cause appreciable economic damage. Anthurium decline caused by the burrowing nematode, Radopholus similis, currently poses a major challenge to anthurium production due to prohibition of available nematicides. Anthuriums can be successfully produced by constant vigilance and implementation of fully integrated disease management practices.