2002 Evaluation of Soybean Varieties for Symptoms of Iron
Chlorosis
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During 2002 the University of Minnesota, Department of Agronomy and Plant Genetics, Soybean Breeding and Genetics Project conducted Iron Chlorosis Evaluations at 2 sites with high pH soils near Breckenridge and Granite Falls in western Minnesota. The Breckenridge site was planted June 5 and the observations for chlorosis were made on July 18 and on August 15. Granite Falls was planted on June 6 and the observations were made on July 5 and August 15. The experimental design was 3 replications of each variety in randomized complete blocks. Iron chlorosis scores range from, 1 = no chlorosis to 5 = severe chlorosis. The varieties Dawson and Corsoy 79 are used throughout these trials as standards or checks to gauge the level of chlorosis and also the repeatability of the scores. Data presented in tables, 1-4, estimate iron chlorosis tolerance based on visual scoring of southern, central and northern Minnesota adapted varieties, as well as of special use varieties. Iron chlorosis symptoms on both dates at Breckenridge and date two at Granite Falls were too severe to be informative. Chlorosis scores presented here from the first observation at Granite Falls are more useful in separating varieties in their tolerance to iron chlorosis The University of Minnesota is an equal opportunity
educator and employer. URL: http://www.soybeans.umn.edu/crop/variety/Iron_Chlorosis/index_2002.htm
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COPYRIGHT INFORMATION The information in these miscellaneous publications of the Minnesota Agricultural Experiment Station (MAES) is presented under authority granted by the Hatch Act of 1887 to conduct performance trials on farm crops and interpret data to the public. Permission is granted to reproduce tables only in their entirety, without rearrangement, manipulation or reinterpretation. Permission is also granted to reproduce a maturity group sub-table provided that complete table headings and table notes are included. Reproductions of any material from this publication should credit the MAES as its source. Data in these publications are preliminary. A version that incorporates corrections, revisions and additions is maintained in electron form on the MAES web site at http://www.maes. umn.edu. Electronic versions of some report of past years on these and other crops can also be found at that web site. In accordance with the Americans with Disabilities Act, this material is available in alternative formats upon request. Please contact your University of Minnesota county extension office or, outside of Minnesota, contact the Distribution Center at (612) 625-8173. |
