Assessing the level of PCN infestation
Understanding the level of PCN infestation in your land is pivotal to developing a successful management strategy.
Before planting, it is important to assess the overall PCN risk within a given field. The presence of PCN cysts, along with cyst viability and the species composition, influences the overall risk and decides which pest management options can be employed.
Chemical control with one of a range of nematicides is most commonly used. Where the yellow PCN (G. rostochiensis) is most common, resistant potato varieties can be grown. Cyst viability is also an important factor to consider, as a high number of unviable cysts containing few PCN eggs presents less risk than a low number of viable cysts which contain many eggs. Furthermore, the presence of any PCN cyst will mean that the land cannot be used to grow seed potatoes or potatoes for export.