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.
Gregory L. Tylka
Year of Grant Completion
Tylka, Gregory L., "Ramifications of excessive use of soybean resistance to the soybean cyst nematode, Heterodera glycines" (1995). Leopold Center Completed Grant Reports. 68.