Corn Newsletter : 2016-14

  1. marestail in soybeans
    Author(s): Mark Loux

    It’s possible to find just about everything in this year’s weed control situation – cover crops that didn’t die, marestail that didn’t die, early burndown plus residual treatments that worked but are now breaking because soybeans haven’t been planted, PRE herbicides that did not or may not receive enough rain, and of course more cressleaf groundsel than in an average year.  Some comments on a few of these:

  2. A healthy Asiatic Garden Beetle grub
    Author(s): Eric Richer, CCA, Andy Michel, Kelley Tilmon

    We have been monitoring Asiatic garden beetle grubs (AGB, Maladera castanea) in Northwest Ohio since  2012. Typically known as a turf pest, the grub has caused varied economic damage to corn in Northwest Ohio since then.

  3. Author(s): Peter Thomison

    When estimating yield losses in corn due to hail, frost, and other types of plant injury, it’s essential to establish the stage of plant growth at the time damage occurred. It’s also important to know corn stage of development in order to apply post-emergence chemicals effectively with minimum crop damage. Counting leaf collars to determine the vegetative stage is feasible until the lower leaves can no longer be identified. At about the V6 stage, increasing stalk and nodal growth combine to tear the smallest lower leaves from the plant.

  4. 16-day total precipitation May 30, 2016
    Author(s): Ryan Fliehman The weather continues to be favorable for the majority of the state as mainly dry conditions prevail.  While heat continues early this week, cooler and moister conditions are expected in the coming days and beyond.  With the majority of planting completed, these conditions will be welcomed as the prime growing season comes into full swing.  

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.