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Corn
Volume 63 Number 1 Date 05/03/2018 BLACK CUTWORM - Moths first arrived in the state three weeks ago, appearing in traps in Dodge and Lafayette County on April 12. Counts since then have been low, although the season's first significant captures of nine or more moths were documented at eight monitoring sites from April 26-May 2. The 2018 BCW network consisting of 45 traps across Adams, Buffalo, Columbia, Dane, Dodge, Door, Fond du Lac, Grant, Iowa, Jefferson, Lafayette, Monroe, Pepin, Portage, Rock, Washington, Waukesha, Waupaca and Waushara counties, has thus far registered a cumulative total of 227 moths, or five per trap. A forecast of peak corn cutting dates will be issued next week. TRUE ARMYWORM - The first indication of armyworm arrival was on April 25 near Janesville in Rock County where six adults were collected in a black light trap. Similar to the black cutworm, this long-range migrant overwinters in the south-central U.S. and arrives in Wisconsin each spring on southerly storm fronts. Larval outbreaks are sporadic and may develop during cool, wet seasons, especially following a drought year. -- Krista Hamilton, DATCP Entomologist 
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