Syngenta Canada has recently announced that the Miravis Duo fungicide label has been expanded to include the control of Alternaria blight of ginseng and eastern filbert blight of hazelnut, in addition to many other horticultural crops. Miravis Duo consists of two new actives for ginseng and hazelnuts: adepidyn (pydiflumetofen) (FRAC Group 7) and difenoconazole (FRAC Group 3).
For Ginseng:
Miravis Duo was registered on ginseng as part of a Crop Group 1A (Root Vegetables) registration. It provides two new active ingredients for the management of Alternaria blight of ginseng. Adepidyn is in the same FRAC Group as Fontelis, Sercadis and fluopyram (Luna Sensation), while difenoconazole is the first Group 3 fungicide to be registered on ginseng. As a result, it will provide an additional tool for resistance management in ginseng.
Difenoconazole has shown good to excellent efficacy against Alternaria blight of ginseng in previous trials. While there are no published reports on the use of Adepidyn for control of Alternaria in ginseng, it has shown good control of Alternaria diseases of other crops.
The following use guidelines are provided as an abbreviated, general outline only. Users should be making pest management decisions within a robust integrated disease management program and should consult the complete label before using Miravis Duo Fungicide.
Rate: 1.0 L/ha
Application Instructions: For control of Alternaria apply on a 7 – 14 day interval, starting prior to disease establishment. If disease pressure is high, use the shortest interval. Apply as a broadcast spray in sufficient water (minimum of 150 L/ha) for thorough coverage.
Resistance Management: Do not apply more than 2 consecutive applications of Miravis Duo before switching to a non-Group 3 or Group 7 fungicide.
Maximum Applications per Season: Do not exceed 4 L/ha per season = 4 applications
REI: 12 hr
PHI: 7 days
For Hazelnuts:
Miravis Duo provides two new active ingredients for management of eastern filbert blight in hazelnuts. Adepidyn is the first Group 7 fungicide registered on hazelnuts for eastern filbert blight management, while difenoconazole is an alternative Group 3 option for management of this disease in addition to Quash (metconazole).
Management of eastern filbert blight should begin at bud break and continue through late spring. A rotation of products from different groups is required for resistance management.
Efficacy data for this product for control of eastern filbert blight is not available at this time. Consult the company for more information on expected performance on this disease.
Rate: 1.0 L/ha
Application Instructions: For control of eastern filbert blight apply on a 14 day interval, starting prior to disease establishment. Apply as an airblast spray in sufficient water for thorough coverage. A minimum of 375 L/ha is recommended.
Resistance Management: Do not apply more than 2 consecutive applications of Miravis Duo before switching to a non-Group 3 or Group 7 fungicide.
Maximum Applications per Season: Do not exceed 3 L/ha per season = 3 applications
REI: 12 hr
PHI: 14 days
For a copy of the complete label contact Syngenta Canada or visit the PMRA Label database at https://pr-rp.hc-sc.gc.ca/ls-re/index-eng.php.
Note: This article is not intended to be an endorsement or recommendation for this particular product, but rather a notice of registration activity.
