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807/207 CIPC Optimisation

Publication Date: 
23 August 2011
Author/Contact :
Author/Contact: 
Harry Duncan

Contractor :
Contractor: 
University of Glasgow

Full Research Project Title: Optimisation of the application of chlorpropham to stored potatoes & evaluation of environmental issues relating to its use in GB
Duration: October 1999 - March 2003

Aim: To optimise the CIPC application process, achieve the minimum deposition rate on tubers for effective sprout suppression, and acceptable residue levels and environmental impact.

This project was conducted by SBEU in collaboration with Glasgow University (Dr Harry Duncan). The main focus of the work was on pre-pack potato stores. Application methods were trialled to achieve the minimum deposition rate on tubers for effective sprout suppression, and acceptable residue levels and environmental impact.

The work found that uneven distribution of CIPC in stores is a major problem and an obstacle to achieving Maximum Residue Levels. This was improved slightly through gentle agitation of store air, and using multiple application ports. However, in the longer term, the application process itself may need to be revised, as the thermal fogging technique was implicated in most of the distribution problems. There was also possible evidence of thermal breakdown of CIPC, meaning too much may be being used.

Wash-water was found to contain low levels of CIPC. This was significantly reduced through trapping sediment.

The researchers note that organic crop should not be held in boxes or stores that have been CIPC-treated.

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