The Residues Monitoring Group urges potato growers to forward CIPC (chlorpropham) samples.
It is asking growers who have potato stores previously treated with CIPC and are holding or have held crops for at least two months this season to forward at least one regular multi-residue test result that includes chlorpropham. Those who submitted data last season are asked to do so again.
In 2024, the CIPC Residues Monitoring Group submitted 102 residue data results from potato samples held in stores during 2023/24. The stores had been previously treated with CIPC (chlorpropham) at some time in the past.
This data was voluntarily submitted to the Group, on an anonymous basis, in answer to a request to the potato industry for information from the Health & Safety Executive to allow the suitability of the new temporary maximum residue level for CIPC to be assessed.
Data collected last year shows that, without the tMRL, around 1 in 4 storage facilities would have exceeded the limit of detection (LoD). These stores could have generated exceedances had the tMRL not been introduced.
It is crucial that the industry continues to supply monitoring data to retain the temporary MRL. HSE will oversee this to ensure the tMRL continues to be set at an appropriate level. Its retention relies on the industry providing the evidence that it’s still needed.
To submit data please visit: https://www.gb-potatoes.co.uk/wp-content/uploads/2025/02/CIPC-Residues-Monitoring-Group-Sample-Proforma-2025-1.pdf
