Insecticide resistance in cotton aphid and two-spotted spider mite: seasons 2004-2005 and 2005-2006

Date Issued:2006-08-10

Abstract

For season 2004-2005, sixty-one percent of cotton aphid populations were Pirimor resistant but Intruder, Actara, Thiodan and Pegasus susceptible. Two-spotted mite was Agrimec, Comite and Pegasus susceptible. Intrepid resistance was detected in 43 and Talstar 57 percent of mite stains. Curacron resistance in two-spotted mite was ubiquitous and often at high frequencies. At the time of writing testing for season 2005-2006 was incomplete but Pirimor resistance seemed less than in season 2004-2005. Intrepid resistance was still detected in 67% of the two-spotted mite strains although the product was not available for use in cotton. We conclude that the resistance management strategy for cotton aphid and two-spotted mite should remain 'as is' for season 2006-2007.

Show Full Details

This item appears in the following categories