Potato Cyst Nematodes have been known to occur in the UK for nearly one hundred years. They are the most problematic pest of potatoes and can cause a severe yield loss.
Samples of soil should be taken using a soil corer.
Fields should be subdivided into blocks of one hectare or less, sampling in a grid using a ‘W’ pattern is deemed the most effective, across the direction of cultivation.
Approximately 1.5 – 2 kg of sample are required by the laboratory for analysis, if a sample is deemed lightweight we may contact you to discuss further action.
For a 1 in 6 crop rotation it is suggested that at least a 200gm sample be analysed
Potato Cyst Nematodes are not evenly distributed across a field so some parts of the field may have higher than average numbers present resulting in ‘hot spots’. Some areas of a field may have low counts, so the results shown refer only to the sample received in the laboratory.
It is essential to follow the recognised sampling procedures. AHDB have published guidelines PCN – sampling and Laboratory Guide. Sample guidelines are available on request from the laboratory.
The preferred sample weight for PCN analysis is 1.5kg and for PCN/LOAM analysis is 2kg.
Bags can be supplied and posted out.