Publications for:

pest = Claviceps purpurea
country = U.S.A. (mid N)

found 2 publications:

2006

Widespread occurrence of ergot in upper midwestern U.S. barley, 2005
Plant Disease (2006) 90 (4), p. 527
publishers website - pestinfo wiki

1997

Outbreak of ergot (Claviceps purpurea) in Iowa barley, 1996
Plant Disease (1997) 81 (7), p. 830
publishers website - pestinfo wiki