Extension Communications
Extension 4-H Youth Building
Ames, Iowa 50011-3630
(515) 294-9915
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Extension Communications |
12/1/03
FOR IMMEDIATE RELEASE
Contacts:
Bruce Voss, Agronomy, (515) 294-6870
Eileen Wuebker, Iowa Crop Improvement Association, (515) 290-1439
Jean McGuire, Continuing Education and Communication Services, (515) 294-7033,
jmcguire@iastate.edu
2003 Soybean Crop Performance Data Available
AMES, Iowa - Results of the 2003 Iowa Crop Performance Test for soybean are now available on the Internet at the Iowa Crop Improvement Association (ICIA) Web site: http://www.agron.iastate.edu/icia/. Published bulletins will be available in the December issue of the Iowa Soybean Review and can be requested by contacting Iowa Crop Improvement Association at (515) 294-6921 or ISU Extension Distribution Center at (515) 294-5247.
These trials include performance data on yield, maturity, height, lodging, emergence, iron deficiency chlorosis reaction, Phytophthora race resistance and field tolerance, brown stem rot resistance, soybean cyst nematode (SCN) resistance, protein content and oil content.
The 2003 test evaluated 696 varieties/brands from 45 seed companies and Iowa State University. An entry was tested in one or more of three districts in the state with three testing sites per district. Each district included separate tests for conventional herbicide varieties/brands and Roundup® Ready varieties/brands. Five common checks were included in both tests. Yields were calculated as a percentage of these checks to allow comparisons across tests. Average site yields ranged from 31.1 bushels per acre at Greene to 51.1 bushels per acre at Boxholm.
Entries identified as resistant to SCN were evaluated for field performance at four SCN infested sites per district. Average SCN infested site yields ranged from 36.4 bushels per acre at Maple River to 54.3 bushels per acre at Crawfordsville. All SCN entries were also evaluated for resistance using a cyst reproduction method in a greenhouse.
ICIA conducts the Iowa Crop Performance Tests in cooperation with the Iowa Agriculture and Home Economics Experiment Station at Iowa State University and ISU Extension. The program offers unbiased, third party information to Iowa growers on commercial seed. ICIA provides performance information on hybrids and varieties for alfalfa, barley, corn, oat, soybean, triticale and wheat.
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