The Chemicals Regulatory Directorate has granted emergency approval for the use of the Certis insecticide InSyst (acetamiprid) for the control of cabbage stem flea beetle (Psylliodes chrysocephala) in oilseed rape.
It is the second year in a row this has been obtained, although the 2014 decision came too late to help most growers. Certis says the latest CRD announcement comes ahead of the osr planting season for many growers.
The product is not a seed dressing – it is applied as a post emergence spray up to the five leaf growth stage, and there is no restriction on where it can be used in the UK. But growers are not permitted to use more than one autumn foliar application of any of the following insecticide actives: acetamiprid, clothianidin, imidacloprid, thiacloprid.
The 120-day emergency authorisation, which expires on November 25 2015, relates to the use of InSyst as an insecticide on winter oilseed rape for use at a maximum dose rate of 200g/ha between growth stages BBCH 09 to 14, for control of cabbage stem flea beetle, and application is to be made in a minimum water volume of 200 litres/ha.
Inez Cornell, Certis’ product manager explains that as part of the emergency approval, Certis is asking growers to provide information, via a dedicated web-portal, to help provide a better map of cabbage stem flea beetle pressures across the country. “By collating specific information in relation to pest pressures that are being seen first-hand, up and down the country, we can start to build a wider picture of the potential impact of this destructive pest.
“Having the emergency approval for InSyst is great news for growers this season. But it’s important we keep thinking of future options and are able to respond to grower demands and changing regulatory conditions,” she says.
The notice of approval can be found via the CRD website www.pesticides.gov.uk. More information via the Certis technical hotline on 0845 3730305.