300 dpi: (k9032-1.jpg)
640 pixels wide: (k9032-1.jpg)
 Image Number K9032-1 |
Plant pathologist Mark Mazzola prepares to evaluate the root system of young apple trees in a wheat rotation plot. The roots will be examined to determine whether the rotation crop effectively suppressed root infection by the fungal complex that causes replant disease.
Photo by Brian Prechtel.
