Corn tar spot is a new disease causing significant yield loss in the United States. The lack of information about the pathogen and epidemiology of the disease—which was first reported in the U.S. in 2015 and has since spread to multiple states, including Minnesota in 2019—has made it difficult to diagnose and treat properly. Corn tar spot also appears similar to other leaf diseases and abiotic disorders, making proper identification even more challenging.
Click here for original story, Researchers develop resource to identify corn tar spot
Source: Phys.org