SCN takes your yield

摘要

There aren't many polite things to say about a pest that can steal 30% of your yield before plants even show any symptoms. Soybean cyst nematode, or SCN, is the industry's top yield thief, causing more than $1.2 billion in annual losses in the U.S. Still, SCN earns a grudging respect among the scientists who work with it. "SCN is the ultimate pathogen," marvels Greg Tylka, Iowa State University Extension nematologist and plant pathologist. "It causes yield loss directly and indirectly by making other things like soybean sudden death syndrome and soybean brown stem rot worse.