PCN-SP Debuts As Scotland Updates Digital Guidance On Cyst Nematode Management
PCN Action Scotland has unveiled an interactive decision support tool designed to help growers assess the effects of potato varieties, cover crops and nematicide use across different field scenarios. The system, known as PCN-SP, forms part of a five-year programme funded by the Scottish Government and supported by The James Hutton Institute, SAC Consulting, Scottish Agronomy, SoilEssentials, BIOSS, the Plant Health Centre and SASA.
Drawing on Scottish and UK field data, the tool was developed to assist the long-term management of potato cyst nematode, one of the most persistent challenges for UK potato production. PCN-SP is free to access and provides a digital framework for evaluating varietal resistance, comparing nematicide options and planning rotations.
An estimated 41 per cent of Scottish ware potato land carries PCN infection, which affects yields and increases the risk of further spread. While seed potato production is prohibited on infected land, growers continue to face long-term management pressures that depend on the broader adoption of resistant varieties and informed rotation strategies.
Dr James Price of The James Hutton Institute said, “Key to managing PCN infection is choosing a potato variety with resistance. The PCN-SP allows users to carry out digital trials, viewing the effect of varietal choice on PCN populations and the impact on yield. This model represents the most up-to-date decision support tool for PCN management, allowing growers to see how much their choice in potato variety matters.”
Dr Kerry Leslie of SAC Consulting added: “Having access to an in-depth tool like the PCN-SP allows growers, alongside their agronomists and consultants, to quickly and effectively take the PCN scenario they face in a field and assess ways to improve on the problem in an easy, visual way.”
The new platform was developed in response to rising PCN pressure and the increasing complexity of variety choice and rotation planning. Earlier tools, including the AHDB PCN Calculator, had supported growers for several years, but updated field conditions and the introduction of new varieties prompted the creation of a more advanced model.
PCN-SP was created by SoilEssentials using trial data from Barnyards farm in Angus and feedback from growers. Advanced modelling techniques were used to integrate resistance profiles, population behaviour and yield responses.
The tool was formally presented on 19 November during a British Potato 2025 seminar.
