Resistance of Mango Pathogens to Fungicides Used to Control Postharvest Diseases. Donald H. Spalding, Research Plant Pathologist, Agricultural Research Service, U.S. Department of Agriculture, Subtropical Horticulture Research Unit, 13601 Old Cutler Road, Miami, FL 33158. Plant Dis. 66:1185-1186. Accepted for publication 13 April 1982. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1982. DOI: 10.1094/PD-66-1185.

Isolates of Colletotrichum gloeosporioides, Diplodia natalensis, and Phomopsis citri showed resistance to benomyl. Cross-resistance of the three fungi was shown between benomyl, thiabendazole, and thiophanate-methyl fungicides but not to imazalil and CGA-64251 in in vitro and in vivo tests. CGA-64251 was the most effective fungicide tested for control of postharvest decay of Tommy Atkins and Keitt mangos.

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