The Ohio State University College of Food, Agricultural, and Environmental Sciences
C.O.R.N. Newsletter
OSU Extension
Ohio State ATI
May 10 - 16, 2016
Editor: Amanda Douridas, CCA

Planting and Pollinators

Authors: Reed Johnson, Doug Sponsler, Andy Michel, Kelley Tilmon

Beekeepers in Ohio benefitted from the generally mild winter of 2015-2016.  In Columbus we lost less than 20% of our colonies over winter.  Spring is the only reliably good season for bees in Ohio.  Colonies that survived the winter and new colonies brought up from the Gulf Coast or California ar

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Rusts on Wheat and Barley: An Update

Author: Pierce Paul

Last Thursday I received reports of, and confirmed through pictures, stripe rust in southern Ohio. Reports coming in today suggest that the disease has since spread and may even be increasing in severity.

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Rainfastness of Fungicides in Wheat

Authors: Pierce Paul,

Recent reports of leaf and stripe rust and the fact that the wheat crop is approaching flowering have producers thinking about applying a fungicide to protect their crop.

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Wheat is beginning to head out: time to start monitoring the risk for Scab

Authors: Pierce Paul,

Wheat is now heading out in some fields, particularly in Southern Ohio, and will likely begin flowering in various parts of the state over the next two to three weeks.

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Adjusting Corn Management Practices for a Late Start

Authors: Peter Thomison, Steve Culman

As of Sunday May 8, 30 percent of Ohio’s corn crop was planted, which is 14 percent behind last year and 5 percent behind the five-year average (https://www.nass.usda.

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Heat Unit Accumulation and Corn Emergence

Author: Peter Thomison

There have been reports of slow corn emergence in some areas and that corn planted more than three weeks ago is not yet emerging. Is this cause for concern? Not necessarily. Corn requires about 100 growing degrees days (GDDs) to emerge (emergence requirements can vary from 90 to 150 GDDs).

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Rainy day entertainment – get up to speed on pigweed ID

Author: Mark Loux

When you finish every possible indoor task during this rainy spell, take a few minutes and check out our latest video on pigweed identification.  The video compares four aspects of pigweed biology that we use to differentiate between redroot pigweed, waterhemp, and Palmer amaranth – pubescence, p

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Fertilizer Applicator Certification Training Materials Available Online

Authors: Greg LaBarge, CPAg/CCA, Harold Watters, CPAg/CCA

The number of individuals who have been trained for the Ohio Fertilizer Applicator Certification by Ohio State University Extension Agriculture and Natural Resources staff has reached 11,859 as of April 30, 2016.

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Rapid Transition from El Nino to La Nina Continues


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June Small Grains Field Days

Author: Greg LaBarge, CPAg/CCA

There are three excellent field day opportunities being planned for small grain producers across the state. The three days cover a variety of production issues, nutrient management practices, and small grain uses. Locations are in Pickaway, Wayne and Wood Counties.

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June 1
On-Farm Wheat Field Day-Pickaway County
About C.O.R.N. Newsletter

C.O.R.N. Newsletter is a summary of crop observations, related information, and appropriate recommendations for Ohio crop producers and industry. C.O.R.N. Newsletter is produced by the Ohio State University Extension Agronomy Team, state specialists at The Ohio State University and the Ohio Agricultural Research and Development Center (OARDC). C.O.R.N. Newsletter questions are directed to Extension and OARDC state specialists and associates at Ohio State.

Glen Arnold, CCA
Field Specialist, Manure Nutrient Management
Mark Badertscher
Educator, Agriculture and Natural Resources
Lee Beers, CCA
Educator, Agriculture and Natural Resources
Bruce Clevenger, CCA
Field Specialist, Farm Management
Steve Culman
State Specialist, Soil Fertility
Sam Custer
Educator, Agriculture and Natural Resources
Wayne Dellinger, CCA
Educator, Agriculture and Natural Resources
Nathan Douridas, CCA
Farm Science Review Farm Manager
Ed Lentz, CCA
Educator, Agriculture and Natural Resources
Laura Lindsey
State Specialist, Soybean and Small Grains
Sarah Noggle
Educator, Agriculture and Natural Resources
Tony Nye
Educator, Agriculture and Natural Resources
Les Ober, CCA
Educator, Agriculture and Natural Resources

The information presented here, along with any trade names used, is supplied with the understanding that no discrimination is intended and no endorsement is made by Ohio State University Extension is implied. Although every attempt is made to produce information that is complete, timely, and accurate, the pesticide user bears responsibility of consulting the pesticide label and adhering to those directions.

CFAES provides research and related educational programs to clientele on a nondiscriminatory basis. For more information, visit For an accessible format of this publication, visit

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