Soybean Insects

C.O.R.N. Newsletter Articles

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

    Although the growing season is winding down, we are still receiving some reports of insect activity and damage in soybeans.  At this point, the risk is mainly to late-planted or double-cropped beans that are still maturing and still green when other fields are yellowing.  Late-season soybean aphids, which feed on sap, do not cause yield drag after seed fill is complete.  Stink bugs, grasshoppers, Mexican bean beetles, and bean leaf beetles can feed on pods later in the season.  

    Issue: 2018-31
  2. Author(s): Kelley Tilmon , Author(s): Andy Michel , Author(s): Clifton Martin, CCA

    Mexican Bean Beetle adult (left) and larva (right).  Photo by R. Hammond.

    Issue: 2018-28
  3. Author(s): Kelley Tilmon , Author(s): Andy Michel

    We have heard a few reports of either bean leaf beetles or grasshoppers increasing in soybeans.  As we start to approach the end of the growing season the larger concern with these insects is the potential for pod feeding, rather than foliage feeding.  Pod feeding directly impacts grain quality.  Crop stage is also an important consideration.  Late-planted fields or double-cropped soybeans which are still green when other fields are drying down can be “trap crops,” attracting both bean leaf beetles or grasshoppers leaving the other fields.  Such fields bear close watching. 

    Issue: 2018-27
  4. 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
  5. Author(s): Amy Raudenbush , Author(s): Andy Michel , Author(s): Kelley Tilmon

    Additional authors: Marcus McCartney

    Issue: 2018-12

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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