Farms.com Home   News

Soybean Cyst Nematode is The Most Damaging Soybean Pathogen—Snd It's Rapidly Spreading

Soybean Cyst Nematode is The Most Damaging Soybean Pathogen—Snd It's Rapidly Spreading

The soybean cyst nematode (SCN) is the most damaging pathogen of soybeans in the United States and Canada and it is spreading rapidly, according to information compiled by Gregory Tylka and Christopher Marett, nematologists at Iowa State University. SCN was first found in the United States in 1954 and most recent estimates show that SCN results in $1.5 billion in annual yield losses.

"The continuing spread of SCN is alarming, but not surprising," said Tylka. "Anything that moves soil can move the nematode, including wind, water, and farm machinery." In an article published in Plant Health Progress, Tylka and Marett report that SCN was found in 55 new counties in the United States and 24 new counties and rural municipalities in Canada between 2017 and 2020. Most dramatically, New York State, which saw SCN in only one county pre-2017, reported SCN in 29 new counties, and Manitoba reported SCN for the first time in 2017.

The nematode is easily overlooked as it often does not cause obvious aboveground symptoms for several years, even as it begins to immediately reduce yields. "Farmers often assume that they do not have SCN because the soybeans don't look sick," said Tylka. "This is an unfortunate mistake because SCN numbers are low when the nematode is first introduced into a field, but those numbers increase steadily if left unmanaged."

Click here to see more...

Trending Video

Viterra Sustainability Program

Video: Viterra Sustainability Program


William Pallister, Manitoba Director with the Wheat Growers, talks to Jeff Cockwill, Corporate Affairs Director with Viterra, about their sustainability program, and comments on the Code of Practice for Canadian grain farmers the Canadian Roundtable for Sustainable Crops (CRSC) is in the process of developing. Jeff urges farmers to get engaged in the consultation process and understand what the implications are to their farm.