The paper reports on the sensitivity monitoring executed by DuPont and collaborators in Italy, Spain, Greece since 2009 in order to detect possible sensitivity shifts of T. absoluta from baseline sensitivity to the diamide insecticide chlorantraniliprole (MoA group 28). The results of the 2014 bioassays revealed the first cases of T. absoluta resistance to diamide
The Insecticide Resistance Management recommendations have been developed by IRAC Brazil & IRAC International and in consultation with leading local experts on Brazilian agriculture and resistance management. The recommendations are based on resistance management principles, whilst also considering the need to provide economical pest control. They are intended to provide the basis for developing an
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
In this issue we focus on mode of action (MoA) and its importance in insecticide resistance management (IRM). We present a review paper on IRM and the IRAC MoA Classification and summarize the changes that have been made to the latest version of the classification scheme. Download a copy of the newsletter for full details
See the poster. Summary of findings: In the majority of countries surveyed, pyrethroid resistant populations of pollen beetle dominate (> 60% are resistant). From the countries surveyed, it is only in Switzerland that susceptible populations dominate but sample size was considered too small to be representative of the overall country situation. During 2014, only 11%
The cotton aphid (Aphis gossypii) is a highly polyphagous pest, which has a host range which includes many commercially grown agricultural and horticultural plant species. Insecticide Resistance has been recorded in cotton aphids since the mid-1960‘s, when organophosphate, carbamate and cyclodiene organochlorines were utilised to control this aphid in a wide range of crops. There
A joint initiative between IRAC International and IRAC Brazil, to formulate an IRAC ‘Task Team’ to specifically address insecticide resistance concerns in Brazilian corn, cotton and soybean crops. The workshop was held in the Brazilian capital city, bringing together representatives from major companies, grower and crop advisor representatives, university experts and governmental representatives to discuss
The use of IRAC Group 4 nicotinic acetylcholine receptor agonists (nAChR) has grown considerably since the introduction of the neonicotinoid insecticide imidacloprid, which was commercialized in 1991. The ten insecticides are classified in four sub-groups 4A-4D. The updated guidelines include a table showing the latest resistance status to the neonicotinoid insecticides.
The popular IRAC Mode of Action Classification mini-booklet and the poster showing the chemical structures has been updated and reprinted. The previous printed editions related to earlier version of the classification scheme but these latest editions are based on the most recent classification version 7.3. In addition the format and layout has been improved and
Information from Dupont on triflumezopyrim, their new mesoionic insecticide for control of rice hoppers, has been reviewed by the IRAC MoA WG and a classification to Group 4E agreed. The first registration for triflumezopyrim is expect in 2015 after which the active will be include in the IRAC MoA Classification Scheme. Meanwhile a new appendix