Pests

C.O.R.N. Newsletter Articles

  1. Corn earworms vary in color and focus their feeding at the tip of the ear.
    Author(s): Kelley Tilmon , Author(s): Pierce Paul , Author(s): Andy Michel

    Although western bean cutworm numbers were low this year, we have recently seen and also received reports about high corn earworm populations in late-planted corn and field peas.  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 in the northwest and northeast in late-planted fields.  It is open to debate how well corn earworm can overwinter in most parts of Ohio, and the majority of our po

    Issue: 2018-32
  2. Author(s): Curtis Young, CCA

    Empty Bin Treatments for Grain Bins for Storage of Corn, Popcorn and Soybeans

    Issue: 2018-31
  3. We have heard varying reports of crop injury including replanting, treatment with control products or tillage from slugs and vole in corn and soybeans across the state. To get a better feel for where and under what conditions these two pests have been active in 2017 and 2018, a short six questions survey was made available in August of 2018 on the Crop Observation and Recommendation Network website. Responses were received from 39 farmers and 8 professionals who represented 32 counties. 

    Issue: 2018-31
  4. So far there have been 35 individuals responding to our survey reporting slug or vole injury for their farm or region during the 2017 or 2018 growing seasons. Generally it can be stated that slugs are a greater problem than voles, with replanting or product applied to treat the problem reported by 67 percent of those responding compared to only 20 percent who reported voles were an issue. We would like to capture more responses and will leave the survey open through September 9th before making a final summary with complete details. The survey should take less than 3 minutes.

    Issue: 2018-29
  5. Author(s): Andy Michel , Author(s): Kelley Tilmon

    We have heard from a few extension educators and scouts that soybean aphids are starting to make their appearance.  Right now, the number of infested plants is very low (around 5%) and the number of aphids on the plants is also low (average 5-10).  With this level of infestation, it is highly doubtful that soybean aphids will reach threshold, especially in soybean that has already entered the late R stages (R5 and R6).  However, there is a fair amount of late planted soybean that could still be at risk—in fact we were in a field last week that just reached R2.  We recommend that growers con

    Issue: 2018-26
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