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January 6-20, 2003
C.O.R.N. 2003-1
In This Issue:
A) Welcome To A Championship Year
B) Soybean Seed Treatments - What They Can And Can Not Do For
You
C) Agronomic Crops Insects Web Site
D) 2003 Weed Control Guides Available
E) January Regional Agronomy Meetings
F) Dates And Locations For Agronomy Workshops
Buckeye Football fans got everything they wanted for Christmas with a National Championship. We hope you found everything you wanted under the tree and that the 2003 growing season has a championship ring to it. We are back with a new year of the Crop Observation and Recommendation Network Newsletter. If you have a question or suggestion for the newsletter send us an e-mail or visit your local extension office.
Fungicide seed treatments will only provide protection for a limited period of time after planting. Many of our fields are in continuous soybeans where soybean pathogen populations continue to increase in number and reduced tillage systems provide for a more favorable environment with higher soil moisture levels. In addition, the Phytophthora can only attack plants when soils are totally saturated and when the Rps genes in the soybean plant can no longer detect the Phytophthora.
The bottom line is that seed treatments will only work to protect seeds for the first few weeks after planting, when the environmental conditions are favored for disease development. For example, if Ohio gets heavy rains in late June or July, and Phytophthora populations are high and the varieties are susceptible, this will wipe out all the benefits of the seed treatment. Same is true if rains continue through the whole season and the root rots contribute to yield loss, seed treatments will be ineffective for these problems.
We cannot predict or is it likely that we will ever be able to tell when the environment, the pathogen population and the condition of the soybean plant favor disease development similar to last spring. What we can recommend is that in most cases the application of seed treatment fungicide will save the cost of replanting and help the plants get established early in the production season. When making the decision about seed treatments, some things to ask for particular fields. a) Has there been poor stands or poor emergence or replant in the past 3 years; b) Is the field poorly drained? (large distance between tiles, high clay content, standing water after rains); c) Is this a no-till field?; d) were soybeans planted in the field the year during 2002?: e) field will be planted early (late April-May). If you answered "yes" to any of these questions, you may see a benefit of using seed treatments.
More information on seed treatments in general and efficacy of seed treatments is available through the Ohio Field Crop Disease Web Site - http://www.oardc.ohio-state.edu/ohiofieldcropdisease/
We have created a new web site with information about Agronomic Crops Insects in Ohio at http://entomology.osu.edu/ag/index.htm. The site contains access to Agronomic insect fact sheets, a link to the CORN newsletter, access to 2001 and 2002 research reports in Agronomic crops insects, links to bulletins and links to other web sites.
A number of insecticides have been approved for use on Agronomic crops since we revised Bulletin 545, Insect Pests of Field Crops, in the spring of 2002. We have listed these new approvals throughout the year in the CORN newsletter and since we do not plan to update Bulletin 545 anytime soon, we have placed these new approvals on the web. For example, if you go to the Agronomic crops insects web site and click on corn, one of the choices is Corn Pre-emergence Chemicals. If you click on this choice, a table is shown on the screen with the insects across the top and the chemicals listed down the left side. Clicking on an insect in the table will move you to that insect and a list of chemicals that are labeled on that insect. There are tables like this under the soybean, alfalfa and wheat categories. We will try to keep these tables updated as a reference for currently labeled insects. As always, the label is still the best place to go for up-to-date information.
The 2003 Weed Control Guides Bulletin 789 are now available for in Extension Offices across the state for $4 per copy. This is one of our most popular guides. The 2003 version includes a new herbicide site of action cross reference to help in rotating sites of action, in addition to the standard tables on effectiveness, rainfast intervals, herbicide descriptions and other valuable information.
The January Series of Regional Agronomy meetings are next week. Early registration is $15 AND ENDS ONE WEEK PRIOR TO THE MEETING DATE. At door registration is $20 space permitting. The dates and location for January are:
January 14, 2003
Huron County - Norwalk
Community Bldg., Huron Co. Fairgrounds
940 Fair Road, Norwalk
Host Agent: Gary Bauer
419-627-7631
bauer.3@osu.edu
January 15, 2003
Pickaway County - Williamsport
Crownhill Golf Club
9500 US 22 West, Williamsport
Host Agent: Mike Estadt
OSU Extension, Pickaway County
740-474-7534
estadt.3@osu.edu
January 16, 2003
Belmont County - Bethesda
Lone Pine Hall
109 Washington Street, Bethesda
Host Agent: Steve Schumacher
740-695-1455
schumacher.1@osu.edu
January 17, 2003
Greene County - Xenia
OSU Extension, Greene Co. Office
100 Fairground Road, Xenia
Host Agent: Jerry Mahan
937-372-9971
mahan.2@osu.edu
A complete agenda listing and approved credits for CCA and Pesticide Applicator Training for each location can be found at http://corn.osu.edu/Education/index.html.
The day long Agronomy Workshop series for corn, soybean, wheat and soil fertility
will be held in late January and February of 2003. The workshop provide hands
on learning experiences and have been highly rated by past attendees. Cost is
$15 to $30 depending on the workshop. Contact the agent listed with each meeting
for details or brochures for each meeting can be found at http://corn.osu.edu/Education/2003work.html
CCA and PAT credits are offered where appropriate.
Corn Production And Management Workshops
Tuesday, January 28, 2003
Stark County, Canton
Canton Garden Center
Dennis Weilnau
330-497-1611
Wednesday, January 29, 2003
Knox County, Mt. Vernon
OSU Extension Office
1025 Harcourt Road
John Barker
740-397-0401
Thursday, January 30, 2003
Ross County, Chillicothe
Ross County Service Center
475 Western Avenue
Ray Wells
740-702-3200
Friday, January 31, 2003
Wood County, Custar
OARDC Northwest Branch
4240 Range Line Road
Alan Sundermeier
419-354-9050
Soybean Production And Management Workshops
Wednesday, February 5, 2003
Ashtabula County, Williamsfield
Williamsfield Community Center
Corner of Route 322 and Route 7
David Marrison
440-576-9008
Thursday, February 6, 2003
Marion County, Marion
Prospect Room
222 W. Center Street
William Hudson
740-223-4040
Tuesday, February 11, 2003
Clark County, Springfield
OSU Extension Office
4400 Gateway Blvd.
Mike Haubner
937-328-4607
Wednesday, February 12, 2003
Brown County, Fincastle
Southern State Community College
U.S. Route 62
David Dugan
937-378-6716
Profitable Wheat Management Workshops
Wednesday, February 19, 2003
Paulding County, Paulding
Youth Leadership Building
Paulding County Fairgrounds
Jim Lopshire
419-399-8225
Thursday, February 20, 2003
Sandusky County, Fremont
Sandusky County Fairgrounds
901 Rawson Avenue
Mark Koenig
419-334-6340
Friday, February 21, 2003
Madison County, London
Madison County Engineers Building
831 U.S. Rt. 42 NE
Eric Imerman
740-852-0975
Soil Fertility Workshops
Tuesday, February 25, 2003
Fayette County, Washington C.H.
OSU Extension Office
1415 U.S. Rt. 22 SW
Jim O'Brien
740-335-1150
Wednesday, February 26, 2003
Logan County, Zanesfield
Goshen Friends Church
5527 Rd. 153
Tammy Dobbels
937-599-4227
Thursday, February 27, 2003
Van Wert County, Van Wert
OSU Extension Office
1055 S. Washington Street
Andy Kleinschmidt
419-238-1214
Readers can subscribe electronically to this newsletter by sending an e-mail message to: corn-out-on@postoffice.ag.ohio-state.edu. A successful subscription message will receive by an automatic reply from the listserv. Contact your local Ohio State University Extension Office or e-mail labarge.1@osu.edu if you have problems subscribing.
Past versions of C.O.R.N. can be found on the World Wide Web at: http:/www.ag.ohio-state.edu/~corn/archive/
C.O.R.N. is a summary of crop observations, related information, and appropriate recommendations for Ohio Crop Producers and Industry. C.O.R.N. is produced by the Ohio State University Extension Agronomy Team, State Specialists at The Ohio State University and Ohio Agricultural Research and Development Center. C.O.R.N. Questions are directed to State Specialists, Extension Associates, and Agents associated with Ohio State University Extension and the Ohio Agricultural Research and Development Center at The Ohio State University.
State Specialists: Pat Lipps & Anne Dorrance (Plant Pathology), Bruce Eisley (IPM) and Ron Hammond (Entomology)Extension Agents: Roger Bender (Shelby), Clark Hutson (Seneca), and Greg La Barge (Fulton).Editor: Greg La Barge Web Editor: Tom Rosati
Information presented above and where trade names are used, they are supplied with the understanding that no discrimination is intended and no endorsement 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.
All educational programs conducted by Ohio State University Extension are available to clientele on a nondiscriminatory basis without regard to race, color, creed, religion, sexual orientation, national origin, gender, age, disability or Vietnam-era veteran status.
Issued in furtherance of Cooperative Extension work, Acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture, Keith L. Smith, Director, Ohio State University Extension.
TDD # 1 (800) 589-8292 (Ohio only) or (614) 292-1868
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