Ramifications of excessive use of soybean resistance to the soybean cyst nematode, Heterodera glycines
Date
1995
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Tylka, Gregory
Morrill Professor
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Leopold Center for Sustainable Agriculture
The Leopold Center is a research and education center on the campus of Iowa State University created to identify and reduce negative environmental and social impacts of farming and develop new ways to farm profitably while conserving natural resources.
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Leopold Center for Sustainable Agriculture
Abstract
Soybean cyst nematode (SCN) is a major prob lem throughout much of Iowa. Since its discovery in Iowa in 1978, SCN has rapidly spread throughout much of the state. It is currently a major limiting factor in soybean production. In years with adequate rainfall, yield losses due to SCN average 15 to 25%. The potential for losses of 50 to 70% or more exists in drought years.