The availability of standard, validated and easy-to-run methods for resistance detection in the world’s major insect pests is crucial for successful monitoring of resistance problems. Shown below are the IRAC Approved Test Methods which have been validated by IRAC member companies and collaborators to ensure that they provide reliable and reproducible data. Most tests are specific to particular life-history stages and can only be used with confidence for toxicants which have been validated in the development of the methodology. For more information…
…flies. The scutellum is bright yellow; face, frons and third antennal segment also bright yellow. Keys for the identification of agromyzid leafminers can be found in Spencer and Steyskal (1986). Several species of parasitoid species have proved useful at reducing populations of this pest. Yellow sticky cards also reduce adult densities. However, chemical control is commonly used to protect plant foliage from leafminer injury, and very few insecticides are compatible with parasitoids. Insecticide resistance is recognized as a major problem….
…plants are most vulnerable after seedling emergence, but reduction in corn yield can still occur through leafhopper attacks during the vegetative period. Foliar and seed applied insecticides are the principal control method for this pest, with multiple applications being made during the vegetative period to prevent virus transmission. SUSCEPTIBILITY TEST METHOD No validated IRAC Method (July, 2024) Machado et al (2024) provides a description of a leaf-dip bioassay based on IRAC Method 19 with some adaptation. High levels of resistance…
San José scale (Comstockaspis perniciosa) is a polyphagous pest of deciduous fruit trees including apple, pear, peach, plum, currants; nut-bearing trees and some woody ornamentals. Comstockaspis perniciosa originated in Eastern Asia and has a global distribution due to accidental introductions. The lifecycle is completed in approximately 30 days, with development from two nymph stages, with the first instar referred to as crawlers, to prepupal (male only), pupa (male only) and adult. There can be one to five generations per year…
The Chewing Pest WG is a new group for IRAC combining the past Lepidoptera and Coleoptera WGs and complements the Sucking Pest WG. These two key groups sit within the IRAC Crop Protection Team along with the Nematode WG. It is recognised that the WG will have a broad remit given the potential range of crops and pests but, by focussing on specific areas, it is planned to deliver appropriate IRM strategies. Team Objectives Maintain currency of the global IRM…