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New CIPC rates for this season  

Potato growers and contractors are being reminded of a new CIPC (chlorpropham) dose rate limit for stored potato crops this season.


Marianne   Curtis

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Marianne   Curtis
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Reduction in #CIPC limits

 

This change is part of the gradual annual reduction in CIPC total dose permitted and is a core component of the CIPC stewardship process. It has been initiated by the Potato Industry CIPC Stewardship Group (PICSG) with a view to retaining access to the sprout suppressing treatment.

 

For the 2016-17 season, the new statutory total dose rates for CIPC being applied to potatoes are:

  • Fresh market: 24g/t
  • At store temperature of 5degC or less, a single application, up to 16g/t, should be made, before the temperature is reduced below 7degC
  • Processing market: 42g/t

 

The new rates are down from the previous levels of 30g/t for fresh potatoes and 50g/t for processing potatoes.

 

Adrian Briddon of Sutton Bridge Crop Storage Research, said he hopes that these changes will maintain the status of zero exceedances observed in statutory testing in the last two years and help preserve the availability CIPC.

 

“The new rates have been proven to be effective, so long as it’s evenly distributed and applied at the right time.”

 

This label change is expected to be the penultimate one, before the 2017 five-yearly formal review, according to Mr Briddon.

 

“After this review, any store that requires a CIPC application must have an appropriate fan system installed to facilitate the active recirculation of air within the store.

 

“Investing in the equipment sooner rather than later will not only save you time next year, it will also reduce the volume of chemical required, therefore paying for itself within a year or two.”

 

For more information on best practice visit www.cipccompliant.co.uk/


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