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Corn Fungicide Efficacy Table

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Fungicide Efficacy Table

The Corn Disease Working Group (CDWG) has developed ratings for how well  fungicides control major corn diseases in the United States. Efficacy ratings for each fungicide was generated by field-testing the materials over multiple years and locations. The rating is based on the level of disease control and does not directly reflect yield increases obtained from application of a given product. The tables are based the most widely marketed chemistries that are labeled for use in corn. This list is not reflective of all chemistries labeled in corn, but represents fungicide efficacy for a number of common foliar diseases. Additional products may be labeled and effective for other diseases (e.g. ear rots). A product’s efficacy may be influenced on application timing, rate, application method, and the level of disease severity in a field. Many products have use restrictions, and the label must be followed for application instructions.

Fungicide Efficacy Table–Updated 2020