Twospotted spider mite is an occasional pest of both corn and soybean in Iowa that is exacerbated by dry conditions. Most parts of Iowa are considered abnormally dry right now, according to the National Drought Mitigation Center in Lincoln, Neb. Soil moisture conditions this spring are similar to the last drought that hit Iowa in 1988; the same year Iowa experienced a statewide outbreak of spider mites.
Iowa State University
Varenhorst, Adam Jerry; O'Neal, Matthew E.; and Hodgson, Erin W., "Early Confirmation of Twospotted Spider Mite" (2012). Integrated Crop Management News. 207.
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