Corn Newsletter : 2018-24

  1. Japanese Beetles in Corn and Soybean

    Multiple Japanese Beetles

    We have been hearing reports of Japanese beetles in corn and soybean.  These beetles are large with a shiny copper and green color.  Foliage feeding in corn is almost never economic, though economic damage from silk clipping is possible (though rare).  Consider a rescue treatment when  silks are clipped to less than ½ inch and, fewer than 50% of the plants have been pollinated, and the beetles are still numerous and feeding in the field. 

    Japanese beetles will also feed on soybean foliage.  While the damage might look startling, it is very rare that this reaches economic levels from Japanese beetle.  A rescue treatment is advised when defoliation levels reach 30% in pre-bloom stages, and 20% in bloom to pod fill.  These defoliation levels apply to the plant as a whole, not just certain leaves, and can also be used for general defoliation from more than one kind of leaf-feeding insect in soybean.   A visual guide to defoliation is useful because it is very easy to over-estimate defoliation in soybean.  If there are other foliage-feeding insects present in soybean the same percent defoliation guidelines can be used for all of them collectively.

    For more information about Japanese beetle and other defoliating inseces visit our factsheet at:

    Japanese beetle adult (photo by John Obermeyer)




    Visual Guide to Soybean Defoliation

  2. Night Temperatures Impact Corn Yield

    Corn with ears

    Low night temperatures during the grain fill period (which typically occurs in July and August) have been associated with some of our highest corn yields in Ohio. The cool night temperatures may have lengthened the grain fill period and reduced respiration losses during grain fill. High night time temperatures result in faster heat unit or growing degree day (GDD) accumulation that can lead to earlier corn maturation, whereas cool night temperatures result in slower GDD accumulation that can lengthen grain filling and promote greater dry matter accumulation and grain yields. This is thought to be the primary reason why corn yield is reduced with high night temperatures.

    For example, let’s say a hybrid needed 1350 GDDs to reach maturity after flowering. With an average daytime temperature of 86 F and average night temperature of 68 degrees F, it would take 50 calendar days to accumulate 1350 GDDs. Conversely, with a day temperature of 86 F and a night temperature of 63 F, it would take 56 calendar days to reach that same GDD accumulation. This means with cooler nights, the corn plants in this example would get six additional days to absorb light for photosynthesis and water for transpiration, which could result in increased yield. Research at the University of Illinois conducted back in the 1960s indicated that corn grown at night temperatures in the mid-60s (degrees F) out yielded corn grown at temperatures in the mid-80s (degrees F). Cooler than average night temperatures can also mitigate water stress and slow the development of foliar diseases and insect problems.

    Night temperatures can affect corn yield potential. High night temperatures (in the 70s or 80s degrees F) can result in wasteful respiration and a lower net amount of dry matter accumulation in plants. Past studies reveal that above-average night temperatures during grain fill can reduce corn yield by reducing kernel number and kernel weight. The rate of respiration of plants increases rapidly as the temperature increases, approximately doubling for each 13 degree F increase. With high night temperatures, more of the sugars produced by photosynthesis during the day are lost; less is available to fill developing kernels, thereby lowering potential grain yield.


    Hoeft, R.G., E. D. Nafziger, R.R. Johnson, and S.R. Aldrich. 2000. Modern Corn and Soybean Production. MCSP Publications, Champaign, IL. [See “Climate and Corn” section]

    Lutt, N., M. Jeschke, and S. D. Strachan. 2016. High Night Temperature Effects on Corn Yield. DuPont Pioneer Agronomy Sciences. Crop Insights, Vol. 26, No.16.

    Peters, D.B., J.W. Pendleton, R.H. Hageman, and C.M. Brown.  1971.  Effect of night air temperature on grain yield of corn, wheat, and soybeans.  Agron. J. 63:809.

  3. Estimating Corn Yields at Early Stages of Kernel Development

    Ear of corn for estimating yield
    Author(s): Peter Thomison

    Corn growers often want to estimate grain yields prior to harvest in order to help with marketing and harvest plans. Two procedures that are widely used for estimating corn grain yields prior to harvest are the YIELD COMPONENT METHOD (also referred to as the "slide rule" or corn yield calculator) and the EAR WEIGHT METHOD. Each method will often produce yield estimates that are within 20 bu/ac of actual yield. Such estimates can be helpful for general planning purposes.

    THE YIELD COMPONENT METHOD was developed by the Agricultural Engineering Department at the University of Illinois. The principle advantage to this method is that it can be used as early as the milk stage of kernel development, a stage many Ohio corn fields have probably achieved. The yield component method involves use of a numerical constant for kernel weight which is figured into an equation in order to calculate grain yield. This numerical constant is sometimes referred to as a "fudge‑factor" since it is based on a predetermined average kernel weight. Since weight per kernel will vary depending on hybrid and environment, the yield component method should be used only to estimate relative grain yields, i.e. "ballpark" grain yields. When below normal rainfall occurs during grain fill (resulting in low kernel weights), the yield component method will OVERESTIMATE yields. In a year with good grain fill conditions (resulting in high kernel weights), the method will underestimate grain yields.

    In the past, the YIELD COMPONENT METHOD equation used a "fudge factor" of 90 (as the average value for kernel weight, expressed as 90,000 kernels per 56 lb bushel), but kernel size has increased as hybrids have improved over the years. Dr. Bob Nielsen at Purdue University suggests that a "fudge factor" of 80 to 85 (85,000 kernels per 56 lb bushel) is a more realistic value to use in the yield estimation equation today.

    According to Dr. Emerson Nafziger at the University of Illinois under drought stress “…. If there's a fair amount of green leaf area and kernels have already reached dough stage, using 90 [as the “fudge-factor “] might be reasonable. It typically doesn't help much to try to estimate depth of kernels at dough stage, when kernel depth is typically rather shallow anyway, especially if there are 16 or more kernel rows on the ear. If green leaf area is mostly gone, however, and kernels look like they may be starting to shrink a little, kernels may end up very light, and using 120 or even 140 [as the “fudge-factor”] might be more accurate”.

    Calculate estimated grain yield as follows:

    Step 1. Count the number of harvestable ears in a length of row equivalent to 1/1000th acre. For 30‑inch rows, this would be 17 ft. 5 in.

    Step 2. On every fifth ear, count the number of kernel rows per ear and determine the average.

    Step 3. On each of these ears count the number of kernels per row and determine the average. (Do not count kernels on either the butt or tip of the ear that are less than half the size of normal size kernels.)

    Step 4. Yield (bushels per acre) equals (ear #) x (avg. row #) x (avg. kernel #) divided by 90.

    Step 5. Repeat the procedure for at least four additional sites across the field. Given the highly variable conditions present in many stressed fields, repeat the procedure throughout field as many times as you think appropriate, then calculate the average yield for all the sites to make a yield assessment of the entire field.

    Example: You are evaluating a field with 30‑inch rows. You counted 28 ears (per 17' 5" = row section). Sampling every fifth ear resulted in an average row number of 16 and an average number of kernels per row of 35. The estimated yield for that site in the field would be (28 x 16 x 35) divided by 90, which equals 174 bu/acre.

    NOTE: If there is extensive leaf firing and senescence and little green tissue evident, and kernels appear to be shrinking, using 120 or even 140 as the “fudge-factor” might be more appropriate. Making some assessments using both 90 and 120 can provide an idea of the range in yield possible.

    THE EAR WEIGHT METHOD can only be used after the grain is physiologically mature (black layer), which occurs at about 30‑35% grain moisture. Since this method is based on actual ear weight, it should be somewhat more accurate than the yield component method above. However, there still is a fudge factor in the formula to account for average shellout percentage.

    Sample several sites in the field. At each site, measure off a length of row equal to 1/1000th acre. Count the number of harvestable ears in the 1/1000th acre. Weigh every fifth ear and calculate the average ear weight (pounds) for the site. Hand shell the same ears, mix the grain well, and determine an average percent grain moisture with a portable moisture tester.

    Calculate estimated grain yield as follows:

    Step A) Multiply ear number by average ear weight.

    Step B) Multiply average grain moisture by 1.411.

    Step C) Add 46.2 to the result from step B.

    Step D) Divide the result from step A by the result from step C.

    Step E) Multiply the result from step D by 1,000.

    Example: You are evaluating a field with 30‑inch rows. You counted 24 ears (per 17 ft. 5 in. section). Sampling every fifth ear resulted in an average ear weight of 1/2 pound. The average grain moisture was 30 percent. Estimated yield would be [(24 x 0.5) / ((1.411 x 30) + 46.2)] x 1,000, which equals 135 bu/acre.

    Because it can be used at a relatively early stage of kernel development, the Yield Component Method may be of greater assistance to farmers trying to make a decision about whether to harvest their corn for grain or silage. Since drought stress conditions in some fields may result in poorly filled small ears, there may be mechanical difficulties with combine harvest efficiency that need to be considered. When droughts occur, it’s often cheaper to buy corn for grain than to buy hay for roughage (because of likely forage deficits). Therefore, there may be greater benefit in harvesting fields with marginal corn grain yield potential for silage.


    Nafziger, E. 2012. Estimating Yields of Stressed Corn. The Bulletin, Univ of Illinois. [URL checked July 2018].

    Nielsen, RL. 2016.  Estimating Corn Grain Yield Prior to Harvest. Corny News Network, Purdue University. (URL checked July 2018). Note: In this article, Dr. Nielsen also describes the yield estimation method used by the Pro Farmer Midwest Crop Tour which differs from the methods described above.

  4. Estimating Soybean Yield

    Soybean pods
    Author(s): Laura Lindsey

    To estimate soybean yield, four yield components need to be considered: plants per acre, pods per plant, seeds per pod, and seeds per pound (seed size).  A printable worksheet to estimate soybean yield can be found by clicking here

    Proceed with caution when estimating soybean yield. It is difficult to accurately predict soybean yield because of plant-to-plant variability and fall weather conditions can influence seed size.  Estimates are more accurate later in the growing season and on uniform stands.

    To estimate soybean yield:

    1. To calculate plants per acre, count the number of pod-bearing plants in 1/1,000th of an acre.  In 7.5-inch row spacing, count the number of plants in 69 feet, 8 inches of row.  In 15-inch row spacing, count the number of plants in 34 feet, 10 inches of row.  In 30-inch row spacing, count the number of plants in 17 feet, 5 inches of row. 

    2. To estimate pods per plant, count the number of pods (containing one or more seeds) from 10 plants selected at random.  Divide the total number of pods by 10 to get the average number of pods per plant.

    3. To estimate the number of seeds per pod, count the number of seeds from 10 pods selected at random.  Generally, the number of seeds per pod is 2.5, but this number can be less in stressful environmental conditions.  Divide the total number of seeds by 10 to get the average number of seeds per pod.

    4. To estimate the number of seeds per pound (seed size), assume that there are 3,000 seeds per pound.  If the soybean plants experienced stress, seed size will be reduced, and it will take more seeds to make one pound.  Use a seed size estimate of 3,500 seeds per pound if smaller seeds are expected because of late season stress.

    Using the above estimates, the following formula is used to estimate soybean yield in bushels per acre:  bushels per acre = [(plants/1,000th acre) x (pods/plant) x (seeds/pod)] ÷ [(seeds/pound) x 0.06]

  5. 2018 Ohio Wheat Performance Test

    Wheat Performance Test
    Author(s): Laura Lindsey

    Results of the 2018 Ohio Wheat Performance Test are available online at:

    The purpose of the Ohio Wheat Performance Test is to evaluate wheat varieties, blends, brands, and breeding lines for yield, grain quality, and other important performance characteristics. This information gives wheat producers comparative information for selecting the varieties best suited for their production system and market. Varieties differ in yield potential, winter hardiness, maturity, standability, disease and insect resistance, and other agronomic characteristics. Selection should be based on performance from multiple test sites and years.

    In fall 2017, wheat was planted at three out of five locations within two weeks of the fly-free date. Due to poor soil conditions, wheat was planted in Marion and Darke County 21 and 19 days after the fly-free date, respectively. Wheat entered dormancy in good to excellent condition. Early season wheat growth and development were slower than the previous two years due to cool temperatures in March and April. However, harvest conditions were favorable and earlier than normal. Overall, grain test weight averaged 55.5 lb/bu. Grain yield averaged between 80.0 and 94.5 bu/acre at the five locations.

  6. Late Summer Establishment of Perennial Forages

    Seeding alfalfa

    Ohio growers experienced another wet spring and compressed 2018 spring planting season.  On some farms, this caused postponement of plans for spring seeding of alfalfa and other perennial forages.  In some areas, the prolonged wet weather affected forage harvest schedules, resulting in harvest equipment running on wet forage fields leaving ruts, compacted soils and damage to alfalfa crowns.  Some of these forage acres need to be re-seeded. 

    Late summer, and especially the month of August, provides growers with another window of opportunity to establish a perennial forage stand. Typically, the main risk with a late summer August planting is having sufficient moisture for seed germination and plant growth. There are some advantages to late summer forage planting as compared to a spring planting. Late summer planting means forage seedlings are not competing with the flush of annual spring and summer weed emergence/growth. The soil borne root rot and damping off disease organisms that thrive in cool, wet soils are not an issue.  However, growers need to be aware of planting dates and the potential for late summer diseases in some situations.

    According to the recently revised, 15th edition of the Ohio Agronomy guide, planting of alfalfa and other legumes should be completed by mid-August in Northern Ohio and by the end of August in Southern Ohio.  These timelines take into consideration average frost dates and the time needed for forage plants to develop a root system capable of overwintering.  For example, at about 8 to 10 weeks after emergence alfalfa plants pull the growing point below the soil surface, a process termed ‘contractile growth’.  Alfalfa is only a true perennial plant once contractile growth occurs, and the plant needs to reach this growth stage to overwinter.  Clover plants need to have a crown formed, and grasses should be at least in the tillering stage of development before the onset of winter. 

    If the fall is warm and extended, similar to what we have experienced the past few years, successful establishment is possible with later planting dates.  How much later is really a question of risk management.  Late summer and early fall planting dates of forages were tested in Pennsylvania in the mid-1990’s at two locations that historically are a little milder than most of Ohio’s winters.  For each day planting was delayed after August 1, total forage dry matter yields the next year were reduced by an average of 158, 105, and 76 lbs./acre for alfalfa, red clover, and birdsfoot trefoil.  Later planting dates usually affected grasses to a lesser degree.  For example, orchardgrass yields only decreased significantly when planting was delayed past late-August and perennial ryegrass yields were actually greater in late-August than in early August plantings.  However, for each day planting was delayed after August 30, yields declined 100 lb. /acre for orchardgrass and 153 lb. /acre for perennial ryegrass. Reed canarygrass, a slow establisher, was more sensitive to planting dates. Reed canarygrass yields the year after seeding declined 120 lbs. /acre for each day planting was delayed after August 1.   The best policy is usually to plant most perennial forages as soon in August as possible, when soils conditions allow and when soil moisture is present.

    Sclerotinia crown and stem rot is a concern with no-till seedings of alfalfa in late summer and especially where clover has been present in the past. This pathogen causes white mold on alfalfa seedlings. They become infected during cooler rainy spells in late October and November, the disease develops during the winter, and seedlings literally "melt away" in winter and early spring. It can be devastating where the pathogen is present. No-till is especially risky where clover has been present because the sclerotia germinate from a shallow depth. Early August plantings dramatically improve the alfalfa's ability to resist the infection. Late August seedings are very susceptible, with mid-August plantings being intermediate.

    In a no-till situation, minimize competition from existing weeds by applying a burndown application of glyphosate before planting. Using no-till when herbicide-resistant weeds are present, such as marestail in a previous wheat field, creates a very difficult situation with no effective control options, so tillage is probably a better choice in those situations.  Post-emergence herbicide options exist for alfalfa. After the alfalfa is up and growing, control late summer and fall emerging winter annual broadleaf weeds. A mid- to late fall application of Butyrac, Buctril Pursuit or Raptor are the primary herbicide options. Fall application is much more effective than a spring application for control of these weeds especially if wild radish/wild turnip are in the weed mix.  Pursuit and Raptor can control winter annual grasses in the fall in pure legume stands but not with a mixed alfalfa/grass planting.  Consult the 2018 Ohio and Indiana Weed Control Guide and always read the specific product label for guidelines on timing and rates before applying any product.

    For conventional tillage seeding prepare a firm seedbed to ensure good seed-to-soil contact. Be aware that too much tillage depletes soil moisture and increases the risk of soil crusting. Follow the "footprint guide" that soil should be firm enough for a footprint to sink no deeper than one-half inch.  Tilled seedbeds do not need a pre-plant herbicide.  Finally, keep in mind the following factors to increase establishment success.

    • Soil fertility and pH: The recommended soil pH for alfalfa is 6.8. Forage grasses and clovers should have a pH of 6.0 or above. The minimum or critical soil phosphorus level for forage legumes is 25 ppm (Bray P1) and the critical soil potassium level is somewhere between 100 and 125 ppm for many of our soils.
    • Seed selection: Be sure to use high quality seed of adapted, tested varieties and use fresh inoculum of the proper Rhizobium bacteria. “Common” seed (variety not stated) is usually lower yielding and not as persistent, and from our trials the savings in seed cost is lost within the first year or two by lower forage yields.
    • Planter calibration: If coated seed is used, be aware that coatings can account for up to one-third of the weight of the seed. This affects the number of seeds planted in planters set to plant seed on a weight basis. Seed coatings can also dramatically alter how the seed flows through the drill, so calibrate the drill or planter with the seed going into the field.
    • Seed placement: The recommended seeding depth for forages is one-quarter to one-half inch deep. It is better to err on the side of planting shallow rather than too deep.

    Do not harvest a new perennial forage stand this fall. The ONLY exception to this rule is perennial and Italian ryegrass plantings.  Mow or harvest these grasses to a two and a half to three-inch stubble in late November to improve winter survival.  Do not cut any other species, especially legumes.

  7. Western Bean Cutworm: Adult Moth Catches Continue to Increase in Northeast Ohio

    Western bean cutworm adult

    Western bean cutworm (WBC) adult moth catches are beginning to decrease for the majority of Ohio counties with an exception in Northeast Ohio. For week ending July 28, 18 counties monitored 63 traps (Figure 1). Overall, there was an average of 15 moths per trap (945 total captured). This is a decrease from an average of 25.1 moths/trap (1985 total captured) the previous week. Despite the general trend of adult moth catches decreasing, numbers suggest Northern Ohio counties should continue to scout for egg masses. 

    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 July 28, 2018. Legend (bottom right) describes the color coding on map for the average WBC per county.

    Scouting and management.  Scouting for egg masses should begin if there is one moth per trap per night. This would be indicated as an average of more than 7 moths per county (Figure 1). Female moths prefer to lay eggs in pre-tassel corn approaching tassel, so check such fields first.  To scout for eggs or larvae (Figure 2), choose at least 20 consecutive plants in 5 random locations and inspect the uppermost 3–4 leaves for eggs, as well as the silks for larvae if tassel has emerged. Be sure to inspect different areas of the field that may be in different growth stages. Eggs are laid in unevenly distributed clusters of 5–200, but averaging about 50 per cluster, and hatch within 5–7 days. Eggs first appear white, then tan and then a dark purple. Once eggs turn purple, they will hatch within 24 to 48 hours. For field corn, if 8% or more of the plants inspected have eggs or larvae, consider treatment. For sweet corn, consider treatment if eggs or larvae are found on >4% of plants for the processing market or on >1% of plants for fresh-market. Bt corn with the Cry1F trait can no longer be relied upon for good WBC control, so these fields should be scouted too. These include Herculex I, Herculex Xtra, SmartStax, and others.


    Figure 2. Top: WBC egg mass. Bottom: WBC larva.

    If infestations exceed threshold, many insecticides are available to adequately control WBC, especially those containing a pyrethroid. However, as with any ear-burrowing caterpillar pest, timing is critical. Insecticide applications must occur after egg hatch, or after tassel emergence, but before caterpillars enter the ear. If eggs have hatched, applications should be made after 95% of the field has tassel. If eggs have not hatched, monitor for the color change. Hatch will occur within 24–48 hours once eggs turn purple. To search for larval injury after it has occurred, search the corn for ears having feeding holes on the outside of the husks.

  8. Variable Rate Seeding Focus Group

    Author(s): Laura Lindsey

    Ohio State University is partnering with Michigan State University to hold three Variable Rate Seeding Focus Groups during the month of August. We are interested in learning more about how YOU make seeding rate decisions to fine-turn our research and extension outreach. Participants will be asked to fill-out a survey. Completion of the survey is not required for participation in the Focus Group, but those taking the survey will be paid $80. Additional topics include: creating seeding rate zones and ideal seeding rates within each zone and an expert panel featuring Dr. Elizabeth Hawkins. Space is limited! Register today! 

    Details for the two Ohio meetings:

    Date:                    Aug. 20, 2018

    Location:             Robert Fulton Agriculture Center

                                  8770 State Route 108

                                  Wauseon, Ohio 43567

    Time:                    9:30-1:30 (lunch provided)

    Register:              Laura Lindsey ( or 614-292-9080)

                                  Eric Richer ( or 419-337-9210)


    Date:                    Aug. 21, 2018

    Location:             Nationwide and Ohio Farmer Bureau 4-H Center

                                  2201 Fred Taylor Dr.

                                  Columbus, Ohio 43210

    Time:                    9:30-1:30 (lunch provided)

    Register:              Laura Lindsey ( or 614-292-9080)



    For Michigan:

    Date:                    August 13, 2018

    Location:             Michigan State University Agronomy Shop

                                  4450 Beaumont Rd.

                                  Lansing, MI 48910

    Time:                    9:30-1:30 (lunch provided)

    Register:              Manni Singh ( or 517-353-0226)

                                  Kyle Imwalle ( or 419-953-8122


    To view meeting flyers click here.

  9. Southwest Corn Growers And Fayette County Agronomy Committee Field Day: August 14th

    Author(s): Ken Ford

    Fayette County is known for its rich heritage in the Agriculture Industry. What better place for agricultural organizations such as Ohio State University
    Extension, Southwest Ohio Corn Growers Association, Fayette County Agronomy Club, Fayette County Soil and Water District, Fayette County Farm Bureau, Fayette County Airport and Fayette County Chamber of Commerce to come together on one day to showcase how important the agriculture industry is to its community.

    On August 14 th , 2018 the Southwest Ohio Corn Growers Association, in conjunction with the Fayette County Agronomy Committee and the Fayette County Extension Office, will hold their annual field day and test plot demonstrations. The event will be held at the Fayette County Demonstration Farm, located north of Washington CH on Old Route 38, at the Fayette County Airport. The field day will be from 9:00 AM to 2:00 PM. It is free to attend and will include lunch. Certified Crop Advisor credits and Private Pesticide recertification credits will also be available for this event.

    New this year is the format of speakers. We will begin the event promptly at 9:00AM in the Equipment Building with the keynote speaker, Matt Roberts of Kernmantle Group. After Roberts presentation there will be a variety of other educational sessions in tents around the exhibit area.  Some of the other educational topics included are tri-state fertilizer guide and nitrogen decisions and a gibberella diagnostic demonstration and research project, presented by Steve Culman and Pierce Paul respectively. Elizabeth Hawkins will discuss the use of on-farm research to make production decisions, and Kelley Tilmon will give a diagnostic demonstration of corn and soybean insect pests. Ohio Corn and Wheat Growers will give an update, which will include the new information included in the 2018 Farm Bill. In addition to the educational sessions, agricultural equipment, technology, lending, marketing, seed, and chemical companies will be on hand throughout the event to answer questions and display their newest products.

    Presented along with this year’s field day, will be other activities. Health screenings will be offered by the Fayette County Health Department and Fayette County Hospital. Skin damage screenings will also be conducted by the Ohio State University Extension. Also offered throughout the day will be plane rides by the airport personnel. For more information about plane rides please contact the Fayette County Airport at 740-335-2430.

    Stick around after the field day, as there will still be many activities to take part in as the evening progresses. The expanded schedule includes the Chamber of Commerce “Business after Hours” event, which is a monthly event in Fayette County that highlights different businesses and organizations. The Ohio State University Extension Office and Fayette County Airport will be the highlighted businesses at this August event. The “Business after Hours” will take place from 4:00 PM – 6:00 PM. The Fayette County Soil and Water District and the Fayette County Farm Bureau will be hosting their Annual Meetings and banquet beginning at 6:00 PM. Voting for Soil and Water District Directors will be held at the site from 5:30 PM 6:30 PM. The costs of the tickets for the combined SWCD and Farm Bureau banquet are $10.00. To order tickets, please contact the Farm Bureau office at 937-382-4407 or by email at

    For additional information, please contact Ken Ford, Fayette County ANR Educator at 937-441-5762, or our website  .

  10. No-Till Field Day in Wooster

    The OSU-OARDC in Wooster is the site of a No-Till Field Day on August 29 from 9:00 am until 4:00 pm.  The event is organized by the Ohio No-Till Council with assistance from the Wayne County SWCD and Extension offices.  The day features a visit to and sessions around the historic Triplett-Van Doren no-till plots located on the OARDC Snyder farm.  The plots were established in 1962 and have included on-going no-till research ever since.  The field day begins at Fisher Auditorium, 1680 Madison Ave on the OARDC campus with registration opening at 8:00 am.  This is also a time to visit with exhibitors and see no-till machinery displays while enjoying morning drinks and donuts.  After a welcome, the program formally begins at 9:00 am with a panel of presenters addressing the topic of the “Early Days on No-Till; Where are we Today?” Panel members include Glover Triplett, one of the originators of no-till research at OSU and a co-founder of the historic no-till plots, along with Bill Richards, no-till farmer and former Chief USDA_NRCS, Don Myers, retired OSU Extension Agronomist, Bill Haddad, New Day Ag Consulting and Dave Brandt, no-till farmer, cover crop expert and owner of Walnut Creek Seeds.

    Following the panel discussion, the rest of the morning takes place out at the Triplett-Van Doren no-till research plots with Glover Triplett and Warren Dick providing an overview of the plot research.  After the overview, participants will rotate between three stops and hear presenters address topics of soil carbon and nitrogen measurement, soil physical properties and grain yields.  The morning concludes with participants returning to Fisher Auditorium for lunch.

    The afternoon includes a choice of three concurrent sessions that feature a variety of topics and there is some opportunity for participants to mix and match across sessions.  Session A features cover crop management with Jim Hershey, President, Pennsylvania No-till Alliance, why move from transitional no-till to true no-till with Jerry Grigar, State Agronomist, USDA-NRCS in Michigan and making no-till corn succeed with Jim Hoorman, Soil Health Regional Specialist with USDA-NRCS.  Session B features Dave Brandt and Bill Haddad talking about the use of cover crops in a soybean production system to prevent erosion and build healthy soils, cost-share programs for cover crops with Wayne County NRCS and SWCD personnel  and use of cover crops for forages with a farmer panel.  Session C features Alan Sundermeier, OSU Extension Wood County and Rafiq Islam, Soil Scientist at OSU South Centers, talking about and demonstrating measuring soil health. 

    Early registration for the field day is due by August 22.  Day of the event, on-site registration is $65.  There is a special student discount registration fee of $25 only valid through the early deadline registration date of August 22.  Registration includes lunch, morning and afternoon refreshments and handout materials.  Register online at and click on the 2018 No-Till Field Day heading.  To register by mail, send a check payable to “Ohio No-Till Council” to Bret Margraf, Seneca Conservations District, 3140 South S.R. 100, Suite D, Tiffin, OH  44883 along with your name and address.  For more information about the mail in registration, contact the Seneca Co. SWCD at 419-447-7073.

About the 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.


Andy Michel (State Specialist, Entomology)
David Dugan (Adams County)
Dennis Riethman (Mercer County)
Erika Lyon, CCA (Jefferson and Harrison Counties)
Glen Arnold, CCA (Field Specialist, Manure Nutrient Management )
Harold Watters, CPAg/CCA (Field Specialist, Agronomic Systems)
Jeff Stachler (Auglaize County)
Laura Lindsey (State Specialist, Soybean and Small Grains)
Les Ober, CCA (Geauga County)
Mark Badertscher (Hardin County)
Mark Loux (State Specialist, Weed Science)
Peter Thomison (State Specialist, Corn Production)
Rory Lewandowski, CCA (Wayne County)
Sarah Noggle (Paulding County)


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.

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