Wheat harvest has begun around the county. As I have been out making farm visits and checking insect traps, I have seen several people cutting wheat today. I have yet to hear any local numbers as far as yield, moisture, and test weight so if you are willing to share that information with me I would appreciate it. See the attached news article for wheat harvest tips. While out checking crops, I have been trying to locate tall corn fields for the annual 4th of July picture for the local newspaper. However, this year it has been a tall order to locate that field. If you have a taller than usual field, give Kendrick a call at the Kenton Times (419-674-4067 x 230) so he might be able to come out and take a picture. I suggested a couple fields, but the best I could find was about waist high.
Monday OSU Extension Manure Management Specialist Glen Arnold and I were over by Forest where a dairy farmer was trying out one of the new 12-row manure sidedress toolbars from OSU Extension sidedressing corn. Glen is working with both dairy and swine producers in western Ohio to adopt this practice. This widens the application window for manure application and provides a value added product available to livestock producers when the growing crop needs it most. Swine producers are experiencing as good and even better than normal yields compared with 28% nitrogen, and dairy producers are experiencing good results with supplemental nitrogen. The unit being demonstrated this week was applying 120 lbs of N from the dairy manure using a dragline. If you are interested in seeing pictures and video, check out Hardin County OSU Extension Facebook page.
We also applied nitrogen this week to the nitrogen rate plot near Alger. The corn was in V6 so this is an ideal time to apply the 28% N, but it was about at the limit of the height of the applicator toolbar that was being used. Research from both Purdue University and our local Hardin County nitrogen timing plot this past year showed that application of split season nitrogen at V6-V8 gave us the best yield as compared to other growth stages. Of course this was only one year of research and one site but it did match the result of similar research conducted by Purdue in 2010-11. Limiting factors with mid to late season nitrogen application include equipment capability, number of acres to apply, and also timing of rain.
Marion County OSU Extension is holding a Ram Fertility Clinic on July 24. Contact Tim Barnes, Agriculture and Natural Resources Extension Educator at firstname.lastname@example.org or 740-223-4041 to register. See the attached flyer for more details about this opportunity to get rams screened as well as the discussions on seasonal infertility, care of rams, housing & environment, and physiology of semen productions. Upcoming local events this week include a Fairboard meeting on Saturday, July 1 starting at 7:30 at the fair office. Other than that, see below for agronomy articles that may interest you. Have a good 4th of July.
Is yield jeopardized when replants result in excessive stands? – Peter Thomison, Mark Loux
When widespread replanting occurs as it did this year, situations arise in which the original corn planting is not entirely killed and competes with the replanted corn. To make room for a replant, several herbicide treatments are recommended and these were described in an earlier C.O.R.N. Newsletter (https://agcrops.osu.edu/newsletter/corn-newsletter/2017-14/more-killing-corn-replant-situation). However, these treatments are sometimes not applied. Following severe frosts and protracted periods of freezing, it may appear that the initial planting or stand is dead when, in fact, some portion of it survived. In extreme situations, fields may end up with final stands nearly double what was normally targeted. There is a perception that the greater competition for nutrients, soil moisture and light associated with these excessive stands will result in barren plants and/or small ears (too small to harvest effectively) and will cause major yield losses. Go to https://agcrops.osu.edu/newsletter/corn-newsletter/2017-19/yield-jeopardized-when-replants-result-excessive-stands to find out what research says about this issue.
Application of Manure to Double Crop Soybeans – Glen Arnold
Wheat fields will be harvested in Ohio over the next 10 days and many farmers will plant double-crop soybeans. In recent years there has been more interest from livestock producers in applying manure to newly planted soybeans to provide moisture to help get the crop emerged. Both swine and dairy manure can be used to add moisture to newly planted soybeans. It’s important that the soybeans were properly covered with soil when planted to keep a barrier between the salt and nitrogen in the manure and the germinating soybean seed. It’s also important that livestock producers know their soil phosphorus levels, and the phosphorus in the manure being applied, so we don’t grow soil phosphorus levels beyond what is acceptable. To read more about application of manure to double crop soybeans, go to https://agcrops.osu.edu/newsletter/corn-newsletter/2017-18/application-manure-double-crop-soybeans.
Don’t get burned by hopper burn: Potato Leafhoppers reaching high levels in alfalfa and forage – Andy Michel, Kelley Tilmon, Mark Sulc
We have heard of and observed increasing potato leaf hopper (PLH) damage in many areas across OH last week. PLH feed similar to aphids, by piercing and sucking on plants causing stunting, thinning and yellowing of alfalfa, often called hopperburn. To scout fields, use a sweep net—a single sweep sample is a set of 10 sweeps, and choose 5-10 different field locations. Treatment is needed if the number of PLH (adults and nymphs) caught a sweep sample is equal to the height of alfalfa. For glandular haired or PLH-resistant alfalfa, the threshold is multiplied by 3. For older, thinning alfalfa stands, thresholds can also be increased, while newer stands (e.g. new seedings or 1st year) are more vulnerable. See Ohio State University Extension Bulletin 545, Control of Insect Pests of Field Crops (https://agcrops.osu.edu/publications/control-insect-pests-field-crops-bulletin-545), for those insecticides labeled for potato leafhopper, or for all insecticides labeled on alfalfa.
OSU Extension and OARDC Agronomy Field Days – Harold D. Watters
It has been an interesting spring. Have questions? We may have the answers; we certainly want to have a discussion. Come to one or all three field days in July. Put these dates on your calendar and plan to attend. Upcoming field days include OSU Weed Day, South Charleston – July 12th, Western ARS Agronomy Field Day, South Charleston – July 19th, and Northwest Ag Research Station Field Day, Custar – July 27th. The OSU Weed Science Field Day will be held on July 12 at OARDC Western Ag Research Station in South Charleston. As in previous years, it’s a mostly self-directed event and a chance to look at all of our research. The day runs from 9 to noon, followed by lunch for those who preregister. Feel free to bring anyone you like and to tell others, but please send an email to Bruce Ackley to preregister – – email@example.com – telling him how many are coming so we can plan. The registration fee $35, includes lunch and the plot book, payable on the day of the tour. We will be around as usual to answer questions and lead some brief discussions. To read more about the other upcoming OSU Agronomy field days, go to https://agcrops.osu.edu/newsletter/corn-newsletter/2017-18/osu-extension-and-oardc-agronomy-field-days.
Ohio Agronomy Guide Now Available – Laura Lindsey
The newly revised Ohio Agronomy Guide is now available for $15.75 through CFAES Publications: http://estore.osu-extension.org/Ohio-Agronomy-Guide-15th-Edition-P475.aspx . Chapters include: Ohio’s Climate and Soil, Soil and Water Management, Soil Fertility, Corn Production, Soybean Production, Small Grain Production, Forage Production, Multiple Cropping, Pasture and Grazing Management, Considerations for Using Cover Crops (NEW!), Conducting On-Farm Research (NEW!), and Precision Agriculture (NEW!). You can also purchase them through your local county Extension Office once they have a supply in stock.
Mark A. Badertscher
Agriculture and Natural Resources Educator
OSU Extension Hardin County
1021 W. Lima Street, Suite 103, Kenton, OH 43326