Succinate dehydrogenase inhibitor (SDHI) fungicide resistance prevention strategy

摘要

Succinate dehydrogenase inhibitor (SDHI) fungicides are currently represented in New Zealand by eight active ingredients: bixafen, boscalid, carboxin, fluaxapyroxad, fluopyram, isopyrazam, penthiopyrad and sedaxane. They are either currently registered or undergoing development in New Zealand for use against a range of ascomycete and basiodiomycete pathogens in crops, including cereals, ryegrass seed, apples, pears, grapes, stonefruit, cucurbits and kiwifruit. These fungicides are considered to havemedium to high risk of resistance development, and resistance management is recommended by the Fungicide Resistance Action Committee (FRAC) in Europe. Guidelines are presented for use of SDHI fungicides in New Zealand to help avoid or delay the development of resistance in the fungal pathogens that they target.