| Potatoes
New product labels tighten laws further on CIPC
application
The latest changes to CIPC product labels, introducing new requirements for lower application rates, have been
confirmed by the CRD (Chemicals Regulation Division).
o Fan - No Fog
Critically, fans will be required
as part of the application
process. CIPC must be actively
recirculated during application
and until the fog has cleared.
The Potato Industry CIPC Stewardship Group
(PICSG) has been running the ‘No Fan, No
Fog’ campaign for over three years in
preparation for this decision.
The NAAC CIPC Applicators Group has
confirmed that applications will not be made if
fog is not able to be recirculated. This is to
achieve uniform distribution and residue control
as well as efficacy at the lower dose rates.
New rates for 2017/18 season
For this season, the new statutory limits for
total dose, approved by the Chemicals
Regulation Division of HSE are 36 grams/tonne
for processing (including fish & chip shop
supplies and peeling) and 24 g/t for the fresh
market.
The maximum individual dose is reduced to
12g/tonne. The latest time of application is 14
days before removal from store for sale or
processing and is another statutory
requirement.
Additionally, Stewardship best practice,
endorsed by the NAAC’s CIPC Applicator
Group and Red Tractor Farm Assurance,
continues to allow just one application (now up
N
16 | Farming Monthly | November 2017
to 12 g/t) in cold stores as CIPC residue
declines more slowly at low temperature. This
applies to all stores that will be held below 5°C.
This application should be made early in
storage during pull-down, before the
temperature is decreased below 7°C, for
maximum efficacy.
Mike Storey, AHDB’s Head of Resource
Management and Chair of PICSG, said:
“As the 2017 store loading season builds,
many store managers will be considering their
first CIPC apllication.”
“The labels now state that Stewardship best
practice must be complied with, and so it is a
legal requirement that both an NAAC applicator
is used to apply CIPC and active recirculation
of the store air/fog takes place during and after
treatment. This will help ensure compliance
with the Maximum Residue Level (MRL of 10
mg/kg)”
In stores with positive ventilation (bulk stores
and some box stores), active recirculation is
most easily achieved by fitting a Variable
Frequency Drive (VFD) and using the store’s
ventilation system. In overhead throw box
stores, active recirculation can be brought
about using an air separator or duct at the end
of the store to create an ‘open suction’ system.
Alternatively, fan-assisted plenums placed
within box stacks will ensure active recirculation
can be achieved.
Different approaches are detailed in the
PICSG’s CIPC Application: A Store Owner’s
Guide, which is available at
http://www.cipccompliant.co.uk/uploads/filema
n/cipcapplicationguide.pdf
It is recommended that users consult their
NAAC CIPC Applicator to discuss this
requirement now to ensure that, if steps have
not yet bee n taken to modify stores,
applications can still be made this season.
Finally, it is important to note any food, feed
or seed, other than ware potatoes, should not
be held in stores, which have been treated with
CIPC.
This is because CIPC penetrates the store
fabric and is then re-released risking damaging
seed and potentially contaminating food and
feed. The Maximum Residue Level for CIPC in
anything other than potatoes is the limit of
detection (0.01mg/kg).
For further information, see the PICSG ‘Be
CIPC Compliant’ website -
www.cipccompliant.co.uk
Mike Storey said: “The information on the
PICSG website is designed to be accessible,
however additional storage advice is available,
free of charge, from AHDB’s world-class crop
storage research facility at Sutton Bridge.
Storage managers can call free on 0800 02 82
111”
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