Why are nematodes so hard to get rid of?

Planting season is right around the corner and so are the pests.

Soybean cyst nematode causes problems for growers every year. A researcher explains why they are so hard to eradicate.

“The worm is about 100th of an inch long, and it’s confusing to people, perhaps also because it goes into the root and attaches to the vascular tissue of the soybean root, but then it swells up. The adult female eventually gets so big that she pops out of the root, and you can see her as a little white dot on the surface of the root. In fact, that’s one way we advise farmers and agronomists to check fields for SCN. Wait till five or six weeks after planting, and then, pretty much, through to August, maybe mid-August, dig roots and look for those little white females,” said Dr. Greg Tylka.

He warns nematode resistance will be a challenge in the future. The current resistance took around 20 years to fall apart.

Related Stories
Transporting pollinator colonies—primarily honey bee hives—is a major logistical operation in U.S. agriculture. Costs can vary widely depending on distance, fuel prices, labor, and timing.
Workshops give international bakers hands-on training with U.S. wheat products
As budget hearings continue on Capitol Hill, policymakers focus on long-term solutions to stabilize the fertilizer market to support U.S. farmers.
Rising global supplies may cap soybean price strength, while sorghum prices hinge heavily on China’s export demand.
Strong ethanol output supports corn demand despite export weakness.
Strong crush margins — now at multi-year highs — are encouraging processors to expand production.

LATEST STORIES BY THIS AUTHOR:

Farm programs remain small but politically easier to expand.
Pat Hord with the National Pork Producers Council joined us to recap producer meetings in Washington and discuss key policy priorities including Prop 12 and agricultural labor.
AFBF Economist Dr. Faith Parum break down new survey findings on fertilizer affordability and producer sentiment heading into the 2026 growing season.
Sen. Roger Marshall joined us to discuss rising input costs, farm support efforts, and legislation aimed at strengthening domestic fertilizer supply.
Agriculture Shows
Hosted by Scott “The Cow Guy” Shellady and RFD News Markets Specialist Tony St. James, Commodity Talk delivers expert insight into the day’s ag commodity markets just before the CME opens. Only on RFD-TV and Rural Radio SiriusXM Channel 147.
A look at the news, weather and commodities headlines that drove agriculture markets in the past week.
Everything profits from prairie. Soil, air, water — and all kinds of life! Learn how you can improve your land with prairie restoration, cover crops and prairie strips, while growing your bottom line.
Special 3-part series tells the story of the Claas family’s legacy, which changed agriculture forever.