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Emergency Authorisation for new Acelepryn soil pest control

Product Update
Cockchafer May Bug
Acelepryn offers the potential to control economically damaging infestations of Chafer grub and leatherjackets, from accurate timing and treatment at egg laying - to target larvae at early 1st and 2nd stage instars

An Emergency Authorisation has been granted for the use of the Syngenta insecticide, Acelepryn, for the control of Chafer grubs and leatherjacket on golf course greens and tees, horse race courses and airfields. The approval was applied for by STRI, on behalf of and with support from the amenity industry.

Chafer Grubs and leatherjackets (below) cause damage to turf through extensive feeding on roots, which can be severe in localised patches.

Leatherjacket on turf

Furthermore, extreme damage can occur when badgers, birds and other foragers root through turf in search of the grubs.

Download a copy of the Guidelines foe Acelepryn use in the UK

The Emergency Authorisation permits Acelepryn use in situations where there is an acknowledged instance of economic damage and where the product has been recommended by a BASIS qualified advisor.

Chafer Bugs

With the loss of available control options independent advisors, ADAS, has calculated the economic cost of Chafer Grubs (above) alone at up to £85 million a year for golf courses in the UK, from lost income and damage repair. The report also highlighted that on the 40% of racecourses affected by the pest’s damage, lost income could amount to up to £605,000 per course. 

‘”Since the withdrawal of effective insecticides, economic damage from chafer grubs and leatherjackets has been of major concern to many of us,” reported STRI Head of Research, Dr Ruth Mann.

“Obtaining this Emergency Authorisation of Acelepryn enables us to manage the most damaging effects of these soil pests as part of an integrated turf management programme.”

Click on the video below to see the effects of Chafer grub on turf roots:

Chafer video screen

Acelepryn UK Emergency Authorisation

The UK Emergency Authorisation for Acelepryn has been granted from 7 June to 30 September 2018, to cover the key Chafer Grub and leatherjacket treatment timing. 

The Emergency Authorisation covers golf greens and tees, horse racing courses and airfields, specifically where there has been a history of pest damage or a recognised risk of damage. In all instances the use of Acelepryn must be recommended by a BASIS qualified agronomist.

The authorised label permits application at the rate of 0.6 litres per hectare, applied in 500-1000 l/ha water. Ideally Acelepryn should irrigated in after application. One application per year is permitted, with the latest time of treatment being 30 September.

Turf managers or owners who believe they have suffered economically damaging effects of Chafer grubs and leatherjackets are advised to contact their BASIS agronomist or ICL Area Manager in the first instance.

ICL Area Managers for Acelepryn enquiries:


Jamie Lees

[email protected]

07500 992464


Craig Lalley

[email protected]

07824 528252


Emma Kilby

[email protected]

07748 111965

South East/East London

Ed Carter

[email protected]

07768 466636

South/London/Channel Islands

Darren Hatcher


07787 697684

South West/West London

Nick Martin

[email protected]

07900 666691

North West

Phil Collinson

[email protected]

07824 473699


Matt Nutter

[email protected]

07810 656240


Alternatively contact Syngenta UK Technical Manager:

Glenn Kirby

[email protected]

07483 333964


Click here to download a copy of the Acelepryn Emergency Approval product label