Weed Science Resources
University of California Sites
UC Davis Weed Research and Information Center
Weed ID tool, weed susceptibility charts, yellow starthistle research and other weed related links
Other Agency Sites
California Department of Pesticide Regulations
License Site - QAL, PCA licence qualification, test dates and information
Education Center of the American Phytophathological Society
Basic, and not so basic, information on plant pathogens
Professional Society Sites
California Weed Science Society
Western Society of Weed Science
Online education site - plant and soil sciences e-library
Lessons: herbicide families, physiology and resistance