SCOTT BAUER / US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY SCOTT BAUER / US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY
Editorial use only.
Biological control. Plant pathologist spraying a yellow starthistle (Centaurea solstitialis) seedling with a fungus parasite isolated from the same species. Yellow starthistle is a potent weed in the USA. It is difficult to destroy, but can be attacked using parasites specific to the species. This method of biological control also has the benefit of not harming other plant or animal species.
Model release not available. Property release not required.