Dow AgroSciences kindly hosted the 47th IRAC International meeting at their research facility in Indianapolis on 26th – 30th March, 2012. The meeting was held in conjunction with the IRAC US group and there was a useful exchange of information with around 40 participants representing 10 of the IRAC member companies along with some invited guests. The meeting consisted of a mixture of concurrent IRAC working group sessions, a meet-ing of the Executive Committee, the IRAC US group and an International review day.