Yellow starthistle continues its spread in California
Michael J. Pitcairn, UC Davis
Steve Schoenig, Integrated Pest Control Branch
Rosie Yacoub, CDFA
John Gendron, CDFA
California Agriculture 60(2):83-90. DOI: 10.3733/ca.v060n02p83.
M.J. Pitcairn is Senior Environmental Research Scientist, Biological Control Program, California Department of Food and Agriculture (CDFA), and Associate, Agricultural Experiment Station, Department of Plant Sciences, UC Davis; S. Schoenig is Senior Environmental Research Scientist, Integrated Pest Control Branch, CDFA, Sacramento; R. Yacoub is GIS Specialist, CDFA, Sacramento; J. Gendron is GIS Specialist, CDFA, Sacramento;
The authors thank the county agricultural commissioners and their staffs for their cooperation in the surveys summarized here. The authors thank the biologists of the CDFA Weed and Vertebrate Program for their help in the township survey: Al Acosta, Robin Breckenridge, Ron Eng, Ed Finley, Denis Griffin, Rick Keck, Rod Kerr, Butch Kreps, Ross O'Connell, Tom Patrick and David Quimayousie. The authors also thank Reina Kahn and Max Jako-Veleski for their assistance with figures 1 and 2 in this article and Marcel Rejmanek and Kevin Rice for comments on an earlier draft of this manuscript. This project was supported, in part, by the California Department of Transportation.