IRAC Susceptibility Test methods Standard, validated and easy-to-run methods for resistance detection in the world’s major insect pests. The IRAC Methods Team has worked in collaboration with experts in academia and other institutions to develop, validate and collate approved susceptibility test methods, available to all for free via its website. These methods are crucial for successful monitoring of resistance problems around the world. Download poster Search our test method library Our web-based library allows you to filter by species,…
Euschistus heros feeds on a wide range of crops and has piercing-sucking mouthparts, which both larvae and adults use to puncture plant tissues, injecting saliva that contains digestive enzymes and sucking-in the mixture of sap and dissolving cells. Most of the injury to plants is caused by the toxic saliva, and to a lesser extent by the physical damage. Adult stink bugs overwinter in diapause under leaf litter, tree bark, on crops sown in autumn, in tall grass, in harvest…
With the continued global spread of transgenic crops expressing insect-control traits, IRAC has a major role to provide education on IRM in this area and to promote the implementation of effective IRM strategies. In particular, in those countries where no collaborative organisation currently existed, it was agreed that IRAC could play an especially useful role in helping to ensure that good IRM practices are understood and followed. The team has an on-going activity to identify and work with appropriate…
South-East Asian Thrips, Thrips parvispinus (Thysanoptera: Thripidae) Chilli (hot pepper) crop is mostly damaged by chilli thrips (Scirtothrips dorsalis Hood) and species such as Frankliniella occidentalis, Thrips tabaci and Frankliniella schultzii of which T. tabaci and F. schultzii are present worldwide in peppers predominantly. Adding to the list of damaging thrips is the tobacco thrips or invasive thrips or Southeast Asian thrips, Thrips parvispinus. One of the first reports of T. parvispinus was by Waterhouse (1993) from Indonesia, Thailand,…
The corn leafhopper, Dalbulus maidis (Hemiptera: Cicadellidae), is an important pest of corn in Brazil. Originally from Mexico, it is found throughout North and Latin America. First detected in Brazil in the 1980s, a significant increase in this pest was observed starting primarily in 2015 and continued in subsequent seasons. Increasing maize cultivation areas, long cultivation seasons (first, second and third crop), widespread availability of volunteer maize plants and secondary hosts (other grasses) and the ability of Dalbulus to…