C.O.R.N. Newsletter : 2018-25

  1. ...At Least One Good Rain Event Per Week for the Rest of August...

    Author(s): Jim Noel

    Summer rainfall has been on a wild swing. We have been going back and forth from wet to dry and now we are looking toward a bit wetter pattern again.

    The outlook for the rest of August calls for slightly above normal temperatures (about 1-2F). Rainfall will likely average 2-4 inches with normal being near 3 inches inches. Isolated totals could reach 5 inches through the end of August.

    Going into harvest season things have been changing. Current climate models are continue the trends of temperatures 1-3F above normal through November. However, trends are also gradually wetting up in fall. Rainfall goes from near normal in September to above normal by October into November. We will continue to monitor this trend but early harvest conditions look pretty good but later harvest conditions look more questionable.    

  2. Tillage After Wheat Harvest – A Good Idea?

    Author(s): Steve Culman

    After winter wheat harvest, it’s not an uncommon sight in Ohio to see producers tilling their fields to incorporate wheat residue. These fields are often left fallow until the following spring before there are crops planted again. But is this a good idea? Of course, the answer will depend on the goals of using tillage, but from a soil conservation perspective the answer is nearly always ‘no’.

    Tillage after wheat with no crop planted until the following spring will leave soil exposed for nine months or more, giving the erosive forces of wind and water time to reduce and devalue one of the most important assets producers have – the soil on their farms. Leaving the soil exposed for long periods of time nearly always increases erosion, increases sediment-bound phosphorus and nitrogen which compromise water quality, decreases the ability to build organic matter through roots of living crops and decreases soil food web community size and diversity. Even in fields with minimal to no slope, soil erosion occurs when soil is not protected. Better soil conservation practices would be leaving wheat residue in place, double-cropping soybean or planting a cover crop to keep the soil covered.

    Soil erosion is not a new issue, but remains a primary constraint to soil fertility and health in farmers’ fields. Remembering two primary tenants of soil conservation are relevant here: 1) keep soil covered with plants or residues at all times, and 2) maximize living roots in fields to maintain soil biology and organic matter. Producers should carefully consider their options when balancing short-term goals with long-term strategies of building soil fertility and health.

  3. Survey of Soybean Pollinators in Ohio

    Author(s): Kelley Tilmon

    Authors: Amy Raudenbush, John Barker, Lee Beers, Sam Custer, Amanda Douridas, Mike Estadt, David Marrison, Eric Richer, Patrick Beauzay.

    If you’ve ever walked through a soybean field during bloom you may have noticed a number of different insects visiting the flowers. This is because soybean provides a valuable habitat for many pollinators, including bees. There is evidence that foraging bees can enhance yield even though soybeans are self-pollinating. Despite their regular presence in the soybean fields, a number of questions remain unanswered, such as what species are present in the field and how far into the field are the bees foraging? To answer these questions, a study was conducted in eight soybean fields located in seven Ohio counties, monitoring soybean fields for pollinators during bloom. These counties were Ashtabula (2 fields), Darke, Fulton, Knox, Licking, Logan, and Pickaway.

    Results from the survey found that Ohio soybean is a habitat for an extensive diversity of bees, including 49 species from five families. The five families included Andrenidae (e.g., mining bees), Apidae (e.g., honey bees, bumble bees and longhorn bees), Colletidae (e.g., plasterer bees), Halictidae (e.g., sweat bees) and Megachilidae (e.g., leaf cutter bees). Overall, sweat bees were the most prevalent family, comprising 96% of the bees captured. Ohio’s most widespread and common bee species in this survey was Lasioglossum hitchensi, which comprised 36% of all of the bees captured. L. hitchensi is a native sweat bee that nests in the ground and was the most abundant species at the majority of field locations. In addition to the extensive diversity, bees were collected from all locations throughout the field, including midfield, as early as beginning flowering. This shows that bees forage the entire soybean field soon after soybean plants begin to bloom.

    In summary, Ohio soybean provides a valuable habitat that supports pollinators in the ecosystem. This information highlights the extensive diversity of pollinator species foraging Ohio soybean. This work was supported by the Ohio Soybean Council, the North Central Soybean Research Program, and the Ohio Extension IPM Program.  To see a full report of the survey, click here: https://aginsects.osu.edu/sites/aginsects/files/imce/Bee%20Bowl%20Report%202018%20Ohio%20Summary.pdf

  4. Western Bean Cutworm: Adult Moth Catches Indicate Ohio is Past Peak Flight


    Authors:  John Schoenhals, Mark Badertscher, Lee Beers, Amanda Bennett, JD Bethel, Bruce Clevenger, Sam Custer, Tom Dehass, Allen Gahler, Jason Hartschuh, Ed Lentz, Rory Lewandowski, Cecilia Lokai-Minnich, David Marrison, Les Ober, Eric Richer, Garth Ruff, Jeff Stachler, Alan Sundermeier, Curtis Young, Megan Zerrer, Andy Michel, Kelley Tilmon

    Western bean cutworm (WBC) adult moth catches decreased across monitoring counties in Ohio. For week ending August 4, 23 counties monitored 73 traps (Figure 1). Overall, there was a statewide average of 5.6 moths (406 total captured). This is a decrease from an average of 15 moths per trap (1090 total captured) the previous week. Two consecutive weeks of WBC adult captures indicate that Ohio is past peak flight for WBC adults.

    Figure 1. Average WBC adult per trap in Ohio counties, followed in parentheses by total number of traps monitored in each county for the week ending August 4, 2018. Legend (bottom right) describes the color coding on map for the average WBC per county.

  5. Late Summer Insect & Disease Field Night Event

    Harold Watters, CPAg/CCA

    Agronomy specialists with The Ohio State University’s Extension will offer useful and valuable hands-on identification, training and management suggestions for late summer pests. This will be especially valuable for those in northern Ohio who were delayed in planting – pests may be looking to attack your crops. Monday, August 13, 2018 6:30 to 8:00 p.m. join OSU Entomology and Plant Pathology Specialists – Dr. Anne Dorrance, Dr. Kelley Tilmon, Dr. Andy Michel & Dr. Pierce Paul for hands-on training in scouting for diseases and insects in corn and soybean.

    This field night is being sponsored by Centerra Coop, the OSU Extension IPM program, and the OSU Extension offices in Ashtabula, Geauga & Trumbull counties. Please dress for the weather as the field night will be held rain or shine.

    Pesticide Credits and Certified Crop Adviser Credits will be offered. The evening program will be held on the Dave Millard Farm, 6151 Woodard Rd, Andover, Ohio 44003.

    There is no registration fee to attend. Preregistration is requested so that program handouts can be made. Call 440-576-9008 today!

  6. Composting Tour

    Mary Wicks, Glen Arnold, CCA

    The Ohio State University College of Food, Agriculture and Environmental Sciences annual Composting in Ohio Tour is coming this Thursday. Entitled “A Tour of the Industry” the event is set for Thursday, August 9, and features two innovative large-scale composting facilities. 

    Lima’s Allen-Oakwood Correctional Institution Compost Complex, which opened earlier this year, composts food scraps collected on-site as well as food scraps, manure, yard waste and other materials brought in from up to 85 miles away.

    Andre Farms Composting in Wauseon turns dairy manure, food scraps and yard waste into a plant-friendly soil amendment. Farmers, livestock producers, members of the media are welcome to attend the tour.

    The cost is $40.00. Preregistration is required as a meal is served. To make arrangements, contact Mary Wicks, wicks.14@osu.edu, 330-202-3533 by this coming Wednesday.

  7. Tile Drainage and Soil Health Field Day

    Jason Hartschuh, CCA

    OSU Extension Crawford County will be hosting a Tile demonstration and Soil Health Field day on August 22. The program will start at 9:30 am and run until 2 pm. Cost for the program will be $5 to cover lunch. Throughout the day, participants will have the opportunity to see both commercial and tractor mounted plows in operation. They will have the opportunity to see how to run the tractor plow from the seat and how Intellislope works. While drainage is often the first step to successful no-till and cover crops, it is not the only step. Other presentations will include, Profitable cover cropping with livestock, Managing herbicides for cover crop success, In field soil health testing and interpretation, Planning Grass waterways and Blind inlets to partner with you tile installation, Economics of drain tile installation. Please call the Crawford county extension office at 419-562-8731 to RSVP by August 20th.    

  8. Northwest Ohio Precision Planter Day

    Tuesday, August 14, 2018
    Cost: $30/person
    Location: Fulton County Fairgrounds, 8514 State Route 108, Wauseon, OH 43567

    The Northwest Ohio Precision Planter Day will focus on precision planters and feature discussions and demonstrations from equipment, seed, and technology professionals. The field day begins with a program and the afternoon will feature planter demonstrations in the field. The day’s topics will include:

    • Variable rate seeding
    • Precision placement
    • Downforce options
    • High-speed availability

    Registration is $30 and includes lunch. Registration forms are available at fulton.osu.edu. The event will be from 8:00 a.m. – 3:30 p.m. and be held at the Fulton County Fairgrounds, 8514 State Route 108, Wauseon. Sponsors for the event include: OSU Extension, John Deere - Kenn-Feld Group, CaseIH/Kinze - Redline Equipment, Horsh Planters - Paul Martin and Sons, White Planters – Ohio Ag Equipment and Mycogen Seeds - Davis Farm Services. Click here for more information.

    Eric Richer

Crop Observation and Recommendation Network

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.


Andy Michel (State Specialist, Entomology)
Dennis Riethman (Educator, Agriculture and Natural Resources)
Elizabeth Hawkins (Field Specialist, Agronomic Systems)
Erika Lyon, CCA (Educator, Agriculture and Natural Resources)
Garth Ruff (Educator, Agriculture and Natural Resources)
Greg LaBarge, CPAg/CCA (Field Specialist, Agronomic Systems)
Jeff Stachler (Educator, Agriculture and Natural Resources)
Lee Beers, CCA (Educator, Agriculture and Natural Resources)
Les Ober, CCA (Educator, Agriculture and Natural Resources)
Mark Badertscher (Educator, Agriculture and Natural Resources)
Mark Loux (State Specialist, Weed Science)
Peter Thomison (State Specialist, Corn Production)
Pierce Paul (State Specialist, Corn and Wheat Diseases)
Sam Custer (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.