Pest solutions
Disease & Other Control
Sweet corn Common rust

Common rust can be a yield-limiting disease of sweet corn. The yield might be reduced about 6% for each 10% rust severity (leaf area infected) at harvest.

It is caused by the fungus Puccinia sorghi. Temperatures of 60° to 75° F (16-24° C) and heavy dews or high relative humidity (close to 100%) favor rust development.

1、 Hybrid selection: Race-specific resistance and partial rust resistance are two kinds of varieties. Resistant or moderately resistant varieties should be used for late plantings.

2、 Fungicide application: Scouting the field, the timing of the first application of fungicide is important. Azoxystrobin, Pyraclostrobin, Propiconazole, or the mixture, Mancozeb is suggested.

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