Plant Pathogens at Work: Progress and Possibilities for Weed Biocontrol Classical versus Bioherbicidal Approach

Fig. 4. Infestation of yellow starthistle (Centaurea solstitialis) in California. The weed is the target of the classical biological control agent, Puccinia jaceae var. solstitialis. The host range of the rust was studied extensively prior to its release in California in 2003. The impact and movement of the fungus is currently being monitored (Bill Bruckart, personal communication). Photo courtesy of Bill Bruckart.



Image from Plant Health Progress article:
Plant Pathogens at Work: Progress and Possibilities for Weed Biocontrol Classical versus Bioherbicidal Approach