C.O.R.N. Newsletter

  1. Author(s): Laura Lindsey , Author(s): Anne Dorrance

    Wet weather is continuing to be a problem throughout the state, and many questions are popping up regarding late-season fungicides. 

    Issue: 2015-22
  2. Author(s): Anne Dorrance

    We have had lots of inquiries this past week on the benefit or lack-there-of from fungicide applications on soybean in Ohio.  There are several factors that I have found in the past that can influence this return on investment:   growth stage of the plant, conditions that are favorable for disease and the presence of inoculum.  Below I have outlined how these may influence the outcome for a couple of our most yield limiting late season diseases:  Sclerotinia stem rot (white mold) and frogeye leaf spot. 

    Issue: 2015-22
  3. Author(s): Steve Culman , Author(s): Ed Lentz, CCA

    Additional Authors:  Anthony Fulford, Clay Dygert,

    Issue: 2015-20
  4. Brown Spot in Soybeans
    Author(s): Anne Dorrance

    I looked at the soybean prices on Sunday – all were still less than $10/Bushel.  This price combined with yield losses due to late planting, extra expenses for additional late weed control, and flood injury really put the kibosh on all but the most guaranteed return on investment for the remainder of 2015.  Here are a few guidelines, results from our studies in Ohio that point to the best return on investment.

    Issue: 2015-18
  5. Water Stressed Corn in Ohio
    Author(s): Mark Loux

    1.  Wet weather has delayed POST herbicide applications in both corn and soybeans.  This can result in weeds and crops that are larger and more advanced in growth stage than anticipated.  The larger crop is primarily a problem in corn, where a more advanced growth stage can start to limit herbicide options.  Be sure to check labels and the OH/IN/IL Weed Control Guide for information on maximum crop size and stage for herbicides (Table 8 on page 68 of 2015 edition).  Larger weeds may require higher rates or more complex POST herbicide mixtures.  Glyphosate and Liberty rates can be increased

    Issue: 2015-18
  6. Soybean Fields in Northwest Ohio June 22, 2015
    Author(s): Laura Lindsey

    Due to wet weather, a few farmers in northwest Ohio have not yet planted soybean.  Can this soybean seed be saved and planted next year? 

    1.)  Check with your seed dealer.  Your seed dealer may have options available to return seed.  Check with your seed dealer to see what your options are.

    Issue: 2015-18
  7. 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
  8. Author(s): Laura Lindsey

    The majority of the soybean acres in Ohio have been planted.  (According to the USDA National Agricultural Statistics Service, 85% of the soybean acres were planted by May 31.)  However, even if 5% of the soybean acres are not yet planted, with 5.1 million acres of soybean in Ohio, there are still 255,000 acres left to plant.  There are three things to consider when planting soybean in June: 1.) row width, 2.) seeding rate, and 3.) relative maturity.

    Issue: 2015-16
  9. Author(s): Anne Dorrance , Author(s): Andy Michel

    Editor's note: Meredith Eyre, Graduate Research Assistant, was an author on this article.

    Issue: 2015-15
  10. Author(s): Mark Loux

    While a variety of rainfall and soil moisture conditions can be found around Ohio, a shortage of rain following application of residual herbicides seems to be common.  We are hearing about weeds emerging early in the season even where residual herbicides were applied, which is an indicator of inadequate herbicide “activation”, or lack of downward movement into the upper inch or two of soil where weed seeds germinate.

    Issue: 2015-14