In a cool, wet spring like we have experienced so far in Idaho, conditions may be conducive for the development of certain plant diseases. In this joint Pacific Northwest publication, Hagerty and Smiley provide a simple diagnostic tool to distinguish between “biotic” and “abiotic” stressors. Determining whether the tissue damage you see in the field is the result of another living organism or due to a nutrient or herbicide issue is the first step in taking corrective action. As the authors demonstrate, the pattern of visual symptoms can be a great first clue when scouting fields, and can help you drill down to the specific cause of injury.

PNW Wheat Field Guide: Is it time to scout your fields?