First Report of Soybean Cyst Nematode (Heterodera glycines) in Nebraska. T. O. Powers, Department of Plant Pathology, University of Nebraska, Lincoln 68583-0722. D. S. Wysong, Department of Plant Pathology, University of Nebraska, Lincoln 68583-0722. Plant Dis. 71:1146. Accepted for publication 27 August 1987. Copyright 1987 The American Phytopathological Society. DOI: 10.1094/PD-71-1146C.
Soybean cyst nematode (SCN; Heterodera glycines Ichinohe) was
discovered in two adjacent soybean (Glycine max (L.) Merr.) fields
south of Rulo in Richardson County in southeastern Nebraska in
August 1986. Population levels of the nematode in symptomatic areas
in the fields ranged from 50 to 110 cysts per 100 cm3 of soil. Race tests (1)
indicated the population was race 3. A survey conducted in the spring of
1987 prior to planting identified a third SCN-infested field on a different
farm 9 km north of the first two fields. All fields were located in the
Missouri River floodplain on Albaton silty clay and Haynie silt loam
soils with small tracts of Sarpy loamy fine sand. The nematode has been
reported from Missouri River floodplain soils in Kansas (2) and
Missouri (E. Palm, personal communications). To our knowledge, this
is the first report of SCN in Nebraska.