It is an unsettling sight no soybean grower wants to see — entire fields dying shortly after emergence. This, though, is an unfortunate reality in some fields around Ohio.
On May 14, Asgrow Dekalb agronomist Jeff Rectenwald was scouting fields for a customer in Auglaize County when he came across the aftermath of Pythium seedling blight.
“I ran across entire soybean fields dying from seedling blight as they were emerging from the soil surface,” Rectenwald said. “You can see the fungal lesion at the top of the hypocotyl’s arch as the soybeans were breaking the soil surface.”
The soybeans were planted on May 2 and will be replanted, Rectenwald said. Regular scouting around emergence is important in quickly identifying the problem.
Unfortunately, the rain and persistently cool soil temperatures this spring are optimum conditions for a large and diverse group of pathogens called water molds, according to Anne Dorrance, Ohio State University Extension plant pathologist. … Continue readingRead More »