Corn Newsletter : 2015-09

  1. Author(s): Jim Noel

    April has been a warmer and wetter month across most of the state of Ohio. Temperatures are averaging 3-7 degrees above normal with precipitation ranging from 100-200 percent of normal. The wettest and warmest areas have been across the southern part of the state. Rainfall has been close to normal in the north.

  2. Author(s): Pierce Paul, Laura Lindsey

    1- Pull, or better yet, dig up, several clusters of tillers with roots and soil from multiple locations in the field;

    2- Identify and select three to four primary tillers from each cluster – usually the largest tillers with the thickest stem, but size can be deceiving;

    3- Strip away and remove all the lower leaves (usually small and yellowish or dead leaves), exposing  the base of the stem;

  3. Author(s): Peter Thomison, Allen Geyer

    How much corn is typically planted in Ohio by the third week of April?  According to the National Agricultural Statistics Service (, for the week ending April 13 no appreciable acreage of corn had been planted in Ohio (1%), which compared to 0% last year and 7% for the five year average.

  4. Black cutworm moths
    Author(s): Andy Michel

    Last week, both Purdue University and the University of Kentucky reported high black cutworm catches. In addition, UKY caught a large number of armyworms in one of their traps.  Both of these moth species migrate into our area, lay eggs, and the developing larvae can be significant pests of corn and wheat.

  5. Soyean planting rate chart
    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.  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. 

  6. Author(s): Jason Hartschuh, CCA

    Modified Relay Intercropping (MRI) is the planting of soybeans into standing wheat versus double cropping soybeans that are planted after wheat is harvested. Vyn et al found that relay intercropping of soybeans yielded better than double cropping of soybeans north of I-70 in Indiana. 2014 Ohio research showed a 10 to 25 bushel advantage to MRI over double cropping at OARDC Western and Bucyrus, Ohio respectively. Budgets also show MRI to have $150 gross advantage over other grain operations or a $50 advantage over monocrop soybeans.

  7. The six soil regions sampled
    Author(s): Pierce Paul, Terry Niblack

    Editor's note: Abasola Simon is also an author on this article.

    A total 425 corn fields were surveyed for plant-parasitic nematodes during the 2013 and 2014 growing seasons. In each year, soil samples were collected from 15-16 fields in each of 28 counties, across 6 soil regions, and nematodes were identified and counted.

  8. Cover crop of winter-killed oats
    Author(s): Debbie Brown, CCA

    The Cover Crop Spring Strategies Field Day scheduled for Wednesday, April 22nd will be held at the St. Marys Township House, 10752 SR 364, southwest of St. Marys, OH.  This is less than 1/8th of a mile north of the field itself, but will allow for *inside* discussion away from the mud and the rain.

    Presentations will be held at 2:30p, 4:30p, and 6p at the Township House.  Presenters and Hosts will be on hand from 2p to 7p to answer questions.  This Field Day is being sponsored by OSU Extension Shelby, Mercer, and Auglaize Counties and VanTilburg Farms of Celina.

About the C.O.R.N. Newsletter

C.O.R.N. is a summary of crop observations, related information, and appropriate recommendations for Ohio Crop Producers and Industry. C.O.R.N. is produced by the Ohio State University Extension Agronomy Team, State Specialists at The Ohio State University and Ohio Agricultural Research and Development Center. C.O.R.N. Questions are directed to State Specialists, Extension Associates, and Agents associated with Ohio State University Extension and the Ohio Agricultural Research and Development Center at The Ohio State University.