Plant-parasitic nematodes can cause serious damage to corn. There are numerous species that occur in Iowa, including those with common names like the dagger, lance, lesion, needle, spiral, stubby-root, and stunt nematodes. Symptoms of nematode damage on corn include stunting and/or yellowing of foliage, uneven tasseling, and stunting, swelling, and/or browning of roots.
Iowa State University
Tylka, Gregory L., "Consider nematode feeding as cause for poor corn growth" (2006). Integrated Crop Management News. 1312.
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