Corn Insects

C.O.R.N. Newsletter Articles

  1. Multiple Japanese Beetles
    Author(s): Kelley Tilmon , Author(s): Andy Michel

    We have been hearing reports of Japanese beetles in corn and soybean.  These beetles are large with a shiny copper and green color.  Foliage feeding in corn is almost never economic, though economic damage from silk clipping is possible (though rare).  Consider a rescue treatment when  silks are clipped to less than ½ inch and, fewer than 50% of the plants have been pollinated, and the beetles are still numerous and feeding in the field. 

    Issue: 2018-24
  2. Western bean cutworm adult
    Author(s): Amy Raudenbush , Author(s): John Schoenhals, CCA , Author(s): Mark Badertscher , Author(s): Amanda Bennett , Author(s): Bruce Clevenger, CCA , Author(s): Sam Custer , Author(s): Tom Dehaas , Author(s): Allen Gahler , Author(s): Jason Hartschuh, CCA , Author(s): Ed Lentz, CCA , Author(s): Rory Lewandowski, CCA , Author(s): Cecilia Lokai-Minnich , Author(s): David Marrison , Author(s): Les Ober, CCA , Author(s): Eric Richer, CCA , Author(s): Garth Ruff , Author(s): Jeff Stachler , Author(s): Curtis Young, CCA , Author(s): Chris Zoller , Author(s): Andy Michel , Author(s): Kelley Tilmon

    Western bean cutworm (WBC) adult moth catches are beginning to decrease for the majority of Ohio counties with an exception in Northeast Ohio. For week ending July 28, 18 counties monitored 63 traps (Figure 1). Overall, there was an average of 15 moths per trap (945 total captured). This is a decrease from an average of 25.1 moths/trap (1985 total captured) the previous week. Despite the general trend of adult moth catches decreasing, numbers suggest Northern Ohio counties should continue to scout for egg masses. 

    Issue: 2018-24
  3. Author(s): Kelley Tilmon , Author(s): Andy Michel

    We have been hearing reports of Japanese beetles in corn and soybean.  These beetles are large with a shiny copper and green color.  Foliage feeding in corn is almost never economic, though economic damage from silk clipping is possible (though rare).  Consider a rescue treatment when  silks are clipped to less than ½ inch and, fewer than 50% of the plants have been pollinated, and the beetles are still numerous and feeding in the field. 

    Issue: 2018-23
  4. Western bean cutworm adult
    Author(s): Amy Raudenbush , Author(s): John Schoenhals, CCA , Author(s): Mark Badertscher , Author(s): Lee Beers, CCA , Author(s): Amanda Bennett , Author(s): JD Bethel , Author(s): Bruce Clevenger, CCA , Author(s): Sam Custer , Author(s): Tom Dehaas , Author(s): Mike Gastier, CCA , Author(s): Jason Hartschuh, CCA , Author(s): Ed Lentz, CCA , Author(s): Rory Lewandowski, CCA , Author(s): Cecilia Lokai-Minnich , Author(s): David Marrison , Author(s): Sarah Noggle , Author(s): Les Ober, CCA , Author(s): Eric Richer, CCA , Author(s): Garth Ruff , Author(s): Jeff Stachler , Author(s): Alan Sundermeier, CCA , Author(s): Curtis Young, CCA , Author(s): Chris Zoller , Author(s): Andy Michel , Author(s): Kelley Tilmon

    Western bean cutworm (WBC) adult moth catches in our trapping network continue to increase. For week ending July 21, 23 counties monitored 89 traps (Figure 1). Overall, there was an average of 25.4 moths per trap (1928 total captured). This is an increase from an average of 14.3 moths/trap (1116 total captured) the previous week. It is important to note that not all counties are seeing an increase in WBC adult moths. Counties where WBC adult moth catches decreased included Paulding, Van Wert, Darke, Auglaize, Miami, Hancock, Hardin, Champaign, Clark, Crawford, and Tuscarawas.

    Issue: 2018-23
  5. Author(s): Amy Raudenbush

    John Schoenhals, Mark Badertscher, Lee Beers, Amanda Bennett, JD Bethel, Bruce Clevenger, Sam Custer, Tom Dehass, Allen Gahler, Mike Gastier, Jason Hartschuh, Ed Lentz, Rory Lewandowski, Cecilia Lokai-Minnich, David Marrison, Sarah Noggle, Les Ober, Eric Richer, Garth Ruff, Jeff Stachler, Alan Sundermeier, Curtis Young, Chris Zoller, Andy Michel, Kelley Tilmon

    Issue: 2018-22

Publications

  1. 01/2011

    Control of Insect Pests of Field Crops, Bulletin 545. Gives detailed information on pest control thresholds and insecticide options for management of insects in corn, soybean, wheat and alfalfa.

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