300 dpi: (d1582-5.jpg)
640 pixels wide: (d1582-5.jpg)
 Image Number D1582-5 |
Plant pathologist Martin Carson (left) and technician Jerry Ochocki inspect crown rust infections on common buckthorn, an alternate host. Multiple varieties of oats are planted between rows of infected buckthorn to determine which varieties can resist crown rust.
Photo by Stephen Ausmus.
