Here’s the latest report from Wisconsin.

• First Generation True Armyworm
  True Armyworm moth captures have increased in black light traps in Wisconsin over the past two weeks, and are high in neighboring states MN and IL.
• First Generation European Corn Borer in Field Corn
  First generation European corn borer egg hatch has begun with confirmed feeding reports in corn plants in southern Wisconsin. Krista Hamilton, WI DATCP Pest Survey, reported egg hatch on June 8th.
• Potato Leafhopper Populations in Alfalfa
  Potato leafhopper populations have increased over the last week, and nymph production is well underway. Many consultants and farmers have begun weekly sweep net sampling of alfalfa fields – this practice should continue for the remainder of the season.
• Summer manure spreading on hay fields – some factors to consider
  Some caution is needed to prevent damage to established alfalfa fields from summer manure applications.
• Good News on Waterhemp
  Although it is hard to say report anything good about a troublesome weed like waterhemp, Illinois weed scientists recently reported good news on how rapidly waterhemp dissipates from the seedbank.
• Soybean Weed Competition
  Over the past several days, I’ve noticed several corn fields that are over-due for postemergence weed control.

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