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Urgent research to understand the nature and extent of insecticide resistance in an increasingly damaging pest of peas and beans is underway at Rothamsted Research. The work is in response to reports of failure to control the pea and bean weevil (Sitona lineatus) with pyrethroid sprays, which are a special chemical class of active ingredients found in many modern insecticides used by growers. For further information see the resistance alert on the Rothamsted Research website
A new guideline has been published by IRAG UK which provides advice on the control of grain aphid (Sitobion avenae) populations that may contain individuals with kdr resistance to pyrethroid insecticides commonly used for aphid control on UK cereals. The guideline can be downloaded from the website www.pesticides.gov.uk or via this link.