ONGOING research from the PCN Action Scotland project has reinforced the importance of soil testing as the basis of integrated pest management (IPM) strategies for managing Potato Cyst Nematode (PCN) this spring.
The research, led by Dr James Price, a molecular biologist and nematologist at the James Hutton Institute in Scotland and project lead for PCN Action Scotland, indicates that targeted management of the pest not only by population, but by species is key.
“Part of our project work is to help highlight the value of accurate and early PCN detection through soil testing to effectively combat this pest to growers.
“Our advice is to understand your soil, determine what’s in there—both good and bad—and establish the PCN population at species level, whether it’s Globodera pallida or Globodera rostochiensis.”
Dr Price also highlights the precision needed for soil sampling.
“Given that cysts are about half a millimetre in size, it’s crucial to soil test thoroughly and sample appropriately to understand the population. Identifying the species is vital; only then can you decide what to do next.
“Knowing your specific issue and disease pressure is a vital part of knowing what next steps to take.”
If soil sampling indicates the need for nematicides such as fosthiazate as part of an IPM strategy, the Nematicide Stewardship Programme (NSP) Group advises growers to follow its ‘Best Practice Protocol for Safe Application’, as NSP chairman Patrick Mitton explains.
“With the planting season nearly upon us, we strongly recommend growers and operators revisit our best practice guidelines when it comes to using nematicides, to protect the environment and ensure operator safety.
“The principles recommend operators hold PA4 or PA4G certification, complete the Nematicide Stewardship e-learning, and be NRoSO members. Along with soil sampling to assess pest pressures, seek advice from a BASIS-qualified agronomist before using granular nematicides.
“Proper calibration is also critical; ensure equipment is inspected by NSTS and regularly monitored during application to meet Red Tractor requirements,” he adds.
Growers are encouraged to visit the NSP website to update their knowledge on best practices for fosthiazate granule nematicide application before planting. The NSP website also offers a detailed guide: Code of Good Practice for the application of nematicides.
