A plant pathologist diagnoses diseases in soybean plants and identifies the observable characteristics in the leaves, stem, roots, etc. that can indicate a healthy or diseased plant. Billions of people and animals depend on soybeans for food, fuel, and other products. So when the fields aren’t producing well it makes sense to try to figure out why. One field can have a different problem than the field next to it. The same field can have one infection one year and something completely different the next. And to make things even more complicated plants can suffer from more than one infection or disease problem at any given time.