C.O.R.N. Newsletter

  1. Author(s): Kelley Tilmon

    An array of bee and fly pollinator species are found in soybean, and can enhance yield even though soybeans are self-pollinating.  I will be conducting a study this summer to identify pollinator insects in Ohio soybean and I’m looking for cooperators with appropriate field sites for insect sampling.  Fields can be conventional or organic, but cannot be planted with an insecticidal seed treatment (fungicide is okay).  The minimum field size is 500 x 500 m (about 62 acres) to be able to sample far enough away from field edges.  The sampling device is a metal stake with a “bee bowl” mounted o

    Issue: 2016-09
  2. Author(s): Laura Lindsey

    Planting date.  Planting date (both too early and too late) can reduce soybean yield potential.  In 2013 and 2014, we conducted a planting date trial at the Western Agricultural Research Station near South Charleston, Ohio.  In both years, soybean yield decreased by 0.6 bu/ac per day when planting after mid-May.  (Note: Soil temperatures were >50°F at each planting date.)  The greatest benefit of planting May 1 to mid-May is canopy closure which increases light interception, improves weed control by shading out weeds, and helps retain soil moisture. 

    Issue: 2016-08
  3. soybean pods, photo by Rory Lewandowski
    Author(s): Laura Lindsey

    To estimate yield, four soybean yield components need to be considered: plants per acre, pods per plant, seeds per pod, and seeds per pound (seed size).  A printable worksheet to estimate soybean yield can be found by clicking here.  It is difficult to accurately predict soybean yield because of plant variability and fall weather conditions can influence seed size.  Estimates become more accurate as the growing season progresses. 

    Issue: 2015-26
  4. Soybean Root Rot
    Author(s): Laura Lindsey , Author(s): Anne Dorrance

    The forecast for the coming week is for continued rain and in many cases this will fall on already saturated soils across the northern and west central part of the state.  This is going to be tough on soybeans.  Here is a guide to help differentiate among some key problems when these types of weather events occur.

    Issue: 2015-17