The Ohio State University College of Food, Agricultural, and Environmental Sciences
COLLEGE OF FOOD, AGRICULTURAL, AND ENVIRONMENTAL SCIENCES
C.O.R.N. Newsletter
CFAES
OARDC
OSU Extension
Ohio State ATI
July 7 - July 13
Editor: Stephanie Karhoff

Drought Projections Do Not Go Well With Fungicide Applications

Authors: Anne Dorrance, Pierce Paul

Several calls this past week for fungicide applications on corn and soybean at all different growth stages.  So let’s review what might be at stake here.

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Foliar Fertilizer Applications to Soybean

Authors: Laura Lindsey, Steve Culman, Emma Matcham

When soybean prices are low, inputs need to be carefully considered. Will I get a return on my investment?

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Western Bean Cutworm Numbers Remain Low Across Ohio

Authors: Amy Raudenbush, Mark Badertscher, Jordan Beck, Frank Becker, Lee Beers, CCA, Bruce Clevenger, CCA, Sam Custer, Tom Dehaas, Craig Everett, Allen Gahler, Jason Hartschuh, CCA, Andrew Holden, Stephanie Karhoff, Alan Leininger, Ed Lentz, CCA, , Cecilia Lokai-Minnich, David Marrison, Les Ober, CCA, Eric Richer, CCA, Garth Ruff, Beth Scheckelhoff, Clint Schroeder, Jeff Stachler, Mike Sunderman, Curtis Young, CCA, Chris Zoller, Andy Michel, Kelley Tilmon

We are now in the second week of monitoring for Western bean cutworm (WBC) in Ohio. Similar to last week, WBC adult numbers remain low in all monitoring counties. Trap counts for the week of June 29 – July 5 resulted in a total of 56 WBC adults (0.67 average moths per trap) (Figure 1).

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July Brings on the Heat

Author: Aaron Wilson

Hot and dry conditions have certainly set in across the Buckeye State. Temperatures this past week have averaged 2-8°F above average, with most locations stringing together at least five consecutive days above 90°F and more to come.

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Mid-Season Weed Management in Soybeans – Hot, Dry Edition

Author: Mark Loux

A few weed-related observations while we try to stay cool and hope for a day of rain or at least popup thunderstorms.

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Potassium Deficiency?

Authors: Laura Lindsey, Steve Culman

Potassium deficiency symptoms of corn and soybean include yellowing/browning of lower (older) leaves with edges exhibiting symptoms first. Potassium deficiency symptoms can indicate low soil test potassium (K), but may also be related to recent dry soils, compaction, and poor root growth.

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Emergency Forages to Plant Mid-Summer

Author: Mark Sulc

First and second cutting hay yields are being reported as lower than usual in many areas of Ohio this year. Forages took a hit from the late freezes and cold weather this spring, followed by dry weather after first cutting. Fortunately, hay quality is much better than usual.

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Application of Manure to Double Crop Soybeans to Encourage Emergence

Author: Glen Arnold, CCA

Wheat harvest will soon be wrapped up in Ohio and some farmers will plant double-crop soybeans. The summer manure application window following wheat harvest is typically the 2nd largest application window each year.

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Corn Growth in Hot and Dry Conditions

Authors: Alexander Lindsey, Peter Thomison

In recent days we have been experiencing 90 degree F days with limited precipitation, and so we are starting to see some leaf rolling in corn. Some of this may be related to reductions in soil moisture, but may be related to restricted root systems as well.

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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
John Barker
Educator, Agriculture and Natural Resources
Jordan Beck
Water Quality Extension Associate
Lee Beers, CCA
Educator, Agriculture and Natural Resources
Amanda Bennett
Educator, Agriculture and Natural Resources
Ann Chanon
Extension Educator, Agriculture and Natural Resources
Bruce Clevenger, CCA
Educator, Agriculture and Natural Resources
Rachel Cochran
Water Quality Extension Associate
Trevor Corboy
Educator, Agriculture and Natural Resources
Sam Custer
Educator, Agriculture and Natural Resources
Wayne Dellinger, CCA
Educator, Agriculture and Natural Resources
Anne Dorrance
State Specialist, Soybean Diseases
Nick Eckel
Educator, Agriculture and Natural Resources
Mike Estadt
Educator, Agriculture and Natural Resources
Boden Fisher
Water Quality Extension Associate
Ken Ford
Educator, Agriculture and Natural Resources
Mike Gastier, CCA
Educator, Agriculture and Natural Resources
Will Hamman
Educator, Agriculture and Natural Resources
Jason Hartschuh, CCA
Educator, Agriculture and Natural Resources
Dean Kreager
Educator, Agriculture and Natural Resources
Greg LaBarge, CPAg/CCA
Field Specialist, Agronomic Systems
Alan Leininger
Educator, Agriculture and Natural Resources
Mark Loux
State Specialist, Weed Science
David Marrison
Educator, Agriculture and Natural Resources
Brigitte Moneymaker
Water Quality Extension Associate
Sarah Noggle
Educator, Agriculture and Natural Resources
Tony Nye
Educator, Agriculture and Natural Resources
Les Ober, CCA
Educator, Agriculture and Natural Resources
Pierce Paul
State Specialist, Corn and Wheat Diseases
Eric Richer, CCA
Educator, Agriculture and Natural Resources
Dennis Riethman
Educator, Agriculture and Natural Resources
Garth Ruff
Educator, Agriculture and Natural Resources
Beth Scheckelhoff
Educator, Agriculture and Natural Resources
Clint Schroeder
Educator, Agriculture and Natural Resources
Jeff Stachler
Educator, Agriculture and Natural Resources
Mark Sulc
State Specialist, Forage Production
Kelley Tilmon
State Specialist, Field Crop Entomology
Harold Watters, CPAg/CCA
Field Specialist, Agronomic Systems
Curtis Young, CCA
Educator, Agriculture and Natural Resources
Chris Zoller
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 cfaesdiversity.osu.edu. For an accessible format of this publication, visit cfaes.osu.edu/accessibility.

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