Extension News

2005 Soybean Crop Performance Data Available


AMES, Iowa – Results of the 2005 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. 24 issue of Iowa Farmer Today. Results may also be requested by contacting the Iowa Crop Improvement Association at (515) 294-6921 or the ISU Extension Distribution Center (https://www.extension.iastate.edu/store/) or (515) 294-5247.

The trials evaluated several aspects of soybean production. They included performance data on yield, maturity, height, lodging, Phytophthora race resistance, brown stem rot resistance, soybean cyst nematode (SCN) resistance, protein content and oil content.

The 2005 test evaluated 310 varieties/brands from 23 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. Average site yields ranged from 51.6 bushels per acre at Manly to 64.2 bushels per acre at Crawfordsville.

Soybean cyst nematode reproduction was evaluated on all entries identified as resistant to SCN using cyst-infested soil and a temperature-regulated growth chamber.

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.



Contacts :

Jim Rouse, Agronomy Department (515) 294-5604, croptesting@iastate.edu

Crystal Ostrem, Iowa Crop Improvement Association (515) 294-6921, costrem@iastate.edu

Jean McGuire, Continuing Education and Communication Services, (515) 294-7033, jmcguire@iastate.edu