Identification and Management of Foliar Diseases Associated with Sweet Corn in Florida
Vitor Silva de Moura, Anna Mészáros, Nicholas S. Dufault, Marcio F. R. Resende, andKatia Viana Xavier
Sweet corn is a high-value crop for the fresh market. This publication is intended for Florida sweet corn growers, crop consultants, and Extension professionals to support accurate identification and effective management of foliar diseases caused by fungal pathogens. These diseases consistently threaten market quality, requiring an integrated management approach. Host resistance involves selecting hybrids that resist the diseases most likely to occur in a given season. Cultural practices reduce inoculum and make conditions less favorable for disease. Fungicide applications use multi-site protectants and site-specific products. Fungicides are most effective before disease is observed, when timed to coincide with crop growth stages, and during periods of high disease risk. Pathogen pressure, corn susceptibility, and weather conditions vary across Florida’s production regions, so regular scouting, accurate disease identification, and timely decisions are essential.