December, January and February temperatures were all colder than average across Iowa. As a result, the risk for Stewart’s disease of corn in 2009 is low to negligible throughout all of Iowa, based on two predictive models. Stewart’s disease, also known as Stewart’s wilt, is caused by the bacterium Pantoea stewartii. An insect vector, the corn flea beetle, plays a critical role in the plant-to-plant spread of this causal microorganism.
Iowa State University
Nutter, Forrest W. Jr.; Robertson, Alison E.; Tollefson, Jon J.; and Pope, Richard O., "A 2009 Prediction for Stewart’s Disease of Corn" (2009). Integrated Crop Management News. 698.
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