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Early Season Soybean Aphid Observations

On May 15-19, 2013, Drs. David Voegtlin (retired entomologist, Illinois Natural History Survey) and Dave Hogg (Professor, University of Wisconsin, Madison), surveyed the overwintering hosts of soybean aphids — the common buckthorn (Rhamnus cathartica) and glossy buckthorn (Frangula alnus).…

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Potato Leafhoppers Active in Central Illinois

On June 5, I sampled an alfalfa field in Champaign County and found potato leafhoppers by using a sweep net. These small insects have the potential to cause injury to subsequent cuttings of alfalfa. Typically, the first cutting across much of Illinois is not at economic risk to this migratory pest.…

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Armyworm Activity Reported in Corn and Wheat

Producers are encouraged to scout both corn and wheat for armyworms and potential feeding. Kevin Black, Insect and Plant Disease Technical Manager with Growmark Inc., reported that a field of corn (Putnam County) planted into a rye cover crop had received some defoliation by armyworms.…

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