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C.O.R.N Newsletter 2008-41
     December 16, 2008 - January 6, 2009


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2008 Organic Corn Performance Test
by Allen Geyer, Peter Thomison, Deb Stinner, Rich Minyo

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Although the acreage of corn planted to transgenic Bt and herbicide tolerant hybrids has accelerated in recent years, interest in organic corn production in Ohio is also increasing. In 2008, we continued evaluations of corn hybrids marketed for organic producers at the Hirzel Sustainable Systems site, a certified organic farm located near Bowling Green in Wood county and on certified organic land at OARDC Badger Farm, near Apple Creek in Wayne county. We added a transitional site near South Charleston in 2008. For 2008, four open pollinated (OP) varieties, three OP varietal crosses and two conventionally produced, untreated hybrids were included in the tests. No fertilizers or pesticides were applied to the Bowling Green or Apple Creek sites. Three tons of liquid hog manure were applied to the South Charleston site. Weed control was provided by mechanical cultivation.

Results for Bowling Green and South Charleston are not presented. At these sites, drought stress and variable field conditions contributed to inconsistent yields. At Bowling Green, yields averaged less than 40 bu/A. At South Charleston, a rain storm immediately after planting caused poor emergence and uneven stands. On September 14, record high winds associated with hurricane Ike caused severe root and stalk lodging at the test sites, especially South Charleston.

The report includes cultural practices used at the site and 2008 and 2006-2008 data.

Grain yields at Apple Creek ranged from 32 to 136 bu/A; stalk lodging ranged from 5-100%; and grain moisture at harvest ranged from 15.0-32.8%. Twelve seed companies and suppliers participated in the 2008 test. The relative maturity ratings of the hybrid entries varied from 88 to 114 days.

The results for the 2008 Organic Corn Performance Test can be viewed at: http://agcrops.osu.edu under the corn tab on the left hand side.

Please contact Allen Geyer (phone: 614-292-1393; e-mail: geyer.9@osu.edu) if you would like additional information regarding the test.

Readers can subscribe electronically to this newsletter by signing up at http://agcrops.osu.edu/services/email.html. E-mail labarge.1@osu.edu if you have problems subscribing or no longer wish to receive this newsletter.

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.


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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