PCN Calculator, Integrated Control of Globodera pallida

Potato cyst nematode is the most important potato pest in the UK and may cause substantial loss of yield. There are two species of PCN, Globodera rostochiensis and Globodera pallida. G. pallida has become widespread due to its prolonged hatching period and the selection pressure created by the cultivation of many varieties that are resistant to G. rostochiensis but susceptible to G. pallida.

This is not a decision support system as it does not offer advice on what you should do. Instead it is an educational tool, or a decision justifier. It will show you the implications of your actions on the level of pallida infestation and the effect on your predicted yield. This will demonstrate that treatment of an infestation is best tackled early when the levels are low, as this is when the use of nematicides has the greatest effect.

The effect on yield is based on mathematical predictions. If the infestation is very low, the yield reduction can be so low as to be unnoticeable when a crop is commercially harvested. This can lead to a false economy and the thinking that PCN can be ignored as there was no visible drop in the expected yield. The effect on the Pf or final population after harvest could create issues for subsequent potato crops.

Population Trends
Predicted Yield (t/ha)
Yield Trends
Time (Year)
Population Predictions
Yield Predictions
Disclaimer

While the Agriculture and Horticulture Development Board, operating through its AHDB Potatoes division, seeks to ensure that the information provided by this model is accurate at the time of its provision, subject to the accuracy of the information provided by the user, no warranty is given in respect thereof and, to the maximum extent permitted by law, the Agriculture and Horticulture Development Board accepts no liability for loss, damage or injury howsoever caused (including that caused by negligence) or suffered directly or indirectly in relation to information and opinions contained in or omitted therefrom.

While the Agriculture and Horticulture Development Board seeks to ensure that the information contained within this document is accurate at the time of printing, no warranty is given in respect thereof and, to the maximum extent permitted by law, the Agriculture and Horticulture Development Board accepts no liability for loss, damage or injury howsoever caused (including that caused by negligence) or suffered directly or indirectly in relation to information and opinions contained in or omitted from this document.