Extension Communications
Extension 4-H Youth Building
Ames, Iowa 50011-3630
(515) 294-9915
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Extension Communications |
12/2/04
FOR IMMEDIATE RELEASE
Contacts:
Del Koch, Iowa Crop Improvement Association (515) 294-4166
Crystal Ostrem, Iowa Crop Improvement Association (515) 294-6321
Jean McGuire, Continuing Education and Communication Services (515) 294-7033,
jmcguire@iastate.edu
2004 Soybean Crop Performance Data Available
AMES, Iowa - Results of the 2004 Iowa Crop Performance Test for soybeans are now available online 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 in the Dec. 25 issue of Iowa Farmer Today. Results may also be requested by contacting either the Iowa Crop Improvement Association at (515) 294-6921 or ISU Extension Distribution Center at (515) 294-5247.
The trials evaluated several aspects of soybean production. They included performance data on yield, maturity, height, lodging, iron deficiency chlorosis reaction, Phytophthora race resistance, brown stem rot resistance, soybean cyst nematode (SCN) resistance, protein content and oil content.
The 2004 test evaluated 455 varieties/brands from 32 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 42.2 bushels per acre at Sioux Rapids to 58.6 bushels per acre at Ottumwa.
Entries identified as resistant to SCN were evaluated for field performance at one SCN infested site per district. Average SCN infested site yields ranged from 47.9 bushels per acre at Manly to 56.8 bushels per acre at Ottumwa. 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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