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
Record ethanol production, coupled with stronger demand, supports corn use despite tighter margins elsewhere.
A new maritime biofuels coalition aims to position ocean shipping as a significant growth market for U.S. crops and waste-derived fuels.
Larger operations maintain cost advantages, while softer equipment sales suggest producers are pacing machinery upgrades amid tighter margins.
Sponsored
Golden Harvest’s Corn Technical Product Lead, Todd McRoberts, unveils their line of Northern corn hybrids built for resilience and performance in colder climates.
Transportation access, legal disputes, and fertilizer freight costs will directly influence input pricing and grain movement in 2026.
Mexico plans to release 202,000 acre-feet of water into the Rio Grande, offering temporary relief to South Texas farmers as Congress advances the PERMIT Act.

LATEST STORIES BY THIS AUTHOR:

Congressman Dusty Johnson of South Dakota joined us to discuss key ag policy developments and his outlook for agriculture in 2026.
House Agriculture Committee Democrats are calling for action on the Farm and Family Relief Act, warning that proposed SNAP cost shifts to states could reduce food assistance for low-income families amid ongoing tariffs and trade disruptions that continue to strain U.S. farmers.
Expanded school access to whole milk provides modest but reliable demand support for U.S. dairy producers.
StockShowAuctions.com takes us to the Midland County Junior Livestock Show in West Texas, where young producers are showcasing their dedication, skill, and champion livestock.
Alissa White with American Farmland Trust joined us to provide insight into climate resilience efforts and strategies to help farmers manage weather-related risks.
University of Nebraska President Dr. Jeffrey Gold joined us to share practical health and safety guidance for managing respiratory and skin health during the winter season.
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.