Corn Insects

C.O.R.N. Newsletter Articles

  1. Seedcorn maggots inside of damaged corn seed
    Author(s): Curtis Young, CCA

    Many livestock operations did not have much opportunity to spread manure this winter and into the spring.  Thus many may have pits and lagoons near full capacity and a great need to move that manure to fields as soon as possible.  As spring progresses, manure spreading and planting may occur in a short sequence that can set up prime conditions for seedcorn maggot infestations and injury resulting in poor stand establishment.  Factors that favor seedcorn maggot damage include the incorporation of either green material, such as cover crops or weeds, and/or manure, and cool and damp soil condi

    Issue: 2020-08
  2. Corn earworm
    Author(s): Kelley Tilmon , Author(s): Pierce Paul , Author(s): Andy Michel

    There have been recent reports of high corn earworm populations in certain grain corn fields.  Corn earworm is a pest with many hosts including corn, tomatoes and certain legumes.  In Ohio it is typically considered a pest of sweet corn rather than field corn, but this past week substantial populations have been found in certain field corn sites.

    Issue: 2019-27
  3. Author(s): Amy Raudenbush , Author(s): Kimberley Gault , Author(s): Mark Badertscher , Author(s): Lee Beers, CCA , 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): Andrew Holden , Author(s): Stephanie Karhoff , Author(s): David Marrison , Author(s): Sarah Noggle , Author(s): Les Ober, CCA , Author(s): Eric Richer, CCA , Author(s): Garth Ruff , Author(s): Clint Schroeder , Author(s): Jeff Stachler , Author(s): Mike Sunderman , Author(s): Curtis Young, CCA , Author(s): Chris Zoller , Author(s): Andy Michel , Author(s): Kelley Tilmon

    Results from week five of The Ohio State University Western bean cutworm (WBC) monitoring network has resulted in an overall increase of moths captured across Ohio. Meaning, last week (July 22 – 28) marks our peak week in adult WBC flight to date. A total of 26 counties monitored 79 traps across Ohio and resulted in a 2842 WBC adults (up from 2001 total last week) and a statewide average of 36.0 moths/trap (up from 25.3 average last week) (Figure 1).

    Issue: 2019-24
  4. Author(s): Amy Raudenbush , Author(s): Kimberley Gault , Author(s): Mark Badertscher , Author(s): Bruce Clevenger, CCA , Author(s): Sam Custer , Author(s): Allen Gahler , Author(s): Jason Hartschuh, CCA , Author(s): Andrew Holden , Author(s): Stephanie Karhoff , Author(s): Ed Lentz, CCA , Author(s): Les Ober, CCA , Author(s): Eric Richer, CCA , Author(s): Garth Ruff , Author(s): Mike Sunderman , Author(s): Jeff Stachler , Author(s): Curtis Young, CCA , Author(s): Chris Zoller , Author(s): Andy Michel , Author(s): Kelley Tilmon

    We are in week two of The Ohio State University Western bean cutworm (WBC) monitoring network. Last week’s trap count included WBC adults captured from July 1 – July 6. Overall, 22 counties monitored 64 traps across Ohio. Trap counts increased slightly, resulting in a total of 18 WBC adults (0.3 average moths per trap) (Figure 1). None of the counties reported capturing more than 1 moth / day over the 7 day monitoring period; therefore, all counties currently remain below the recommended levels that indicate scouting for egg masses should begin. 

    Issue: 2019-21
  5. Author(s): Amy Raudenbush , Author(s): Kimberley Gault , Author(s): Mark Badertscher , Author(s): Bruce Clevenger, CCA , Author(s): Sam Custer , Author(s): Tom Dehaas , Author(s): Allen Gahler , Author(s): Mike Gastier, CCA , Author(s): Jason Hartschuh, CCA , Author(s): Andrew Holden , Author(s): Stephanie Karhoff , Author(s): David Marrison , Author(s): Les Ober, CCA , Author(s): Eric Richer, CCA , Author(s): Garth Ruff , Author(s): Jeff Stachler , Author(s): Mike Sunderman , Author(s): Curtis Young, CCA , Author(s): Andy Michel , Author(s): Kelley Tilmon

    The Ohio State University Western bean cutworm (WBC) network has officially started monitoring traps as of last week. Green bucket traps containing a lure were placed along the edges of corn fields during the week of June 17th. The first trap count includes WBC adults captured during the week of June 24th. Overall, 22 counties monitored 62 traps across Ohio; which resulted in 12 WBC adults captured (0.2 average moths per trap) (Figure 1).

    Issue: 2019:20

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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