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{short description of image}Image Number K9032-1 Above: Plant pathologist Mark Mazzola prepares to evaluate the root system of young apple trees in a wheat rotation test 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.  640 pixels wide: (k9032-1.jpg)   Please visit our Image Gallery


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