On July 7, 2015, I spent much of the afternoon in Marion Country walking cornfields looking for Northern corn leaf blight (NCLB).
We visited 11 fields planted to various hybrids, and ranging in growth stage from V13 to almost tasseling (VT). Driving up to the fields, the corn looked very good (Figure 1), and it was easy to think there was not much going on in the field.
Iowa State University
Robertson, Alison E., "Update on Northern Corn Leaf Blight in Iowa" (2015). Integrated Crop Management News. 619.
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