Nematode soil sampling is not a one-size-fits-all approach. The right number, depth, and location of samples depends on the field, the target species, and the level of precision needed for management decisions. Understanding how nematode population densities and dispersal patterns vary by species helps growers and their advisors build better sampling programs to manage these pests more effectively.
For most nematode species causing the greatest economic damage to U.S. potato growers, commercially viable resistant varieties simply do not exist. See how the PAPAS project is working to ensure U.S. potato growers have resistant variety options for the full range of economically important nematode species across market classes.
Potato growers rely on solid economic data when making nematode management decisions. Our team researches the financial impact of nematode management methods through predictive modeling and profitability estimates that reflect the majority of U.S. potato production systems.
PAPAS stands for Potatoes and Pests – Actionable Science Against Nematodes. Launched in 2023, the four-year project is funded by a $6.8 million grant from the USDA’s Specialty Crop Research Initiative and focuses on providing growers with best management practices for controlling nematode infestations.
The PAPAS team will once again be presenting about nematode management at the annual Washington and Oregon Potato Conference, January 27-29, 2026, at the Three Rivers Convention Center, Tri-Cities, Washington.
The PAPAS 2025 Stakeholder Report summarizes major accomplishments across diagnostics, breeding, nematicide discovery, economics, decision tools, and outreach.
This panel discussion covers cornerstones of nematode management, presenting the latest information on economic thresholds, and providing an update on the development of nematode resistant potatoes.
Join us at the 58th annual Idaho Potato Conference and Eastern Idaho Ag Expo Jan. 21-22, 2026, and hear from the PAPAS team about potato nematode management.
This year at Potato Expo in Dallas, we’ll once again be in the Potato Research Advisory Committee booth #1132, where you’ll have a chance to test your nematode knowledge and win a prize.
For decades, potato growers have fought nematodes with fumigation, crop rotation, and strict sanitation measures. While these practices remain essential, other management options need to be considered.