Allegro 500F Fungicide label expanded via Minor Use Program to include disease management on carrots

J. Chaput, OMAFRA, Minor Use Coordinator,Guelph

The Pest Management Regulatory Agency (PMRA) recently announced the approval of URMULE registrations for ALLEGRO 500F Agricultural Fungicide for control of Alternaria leaf blight and white mold on carrots in Canada.   Allegro was already labeled for white mold on dry and succulent beans, late blight on potatoes, clubroot on Brassicas and several diseases on bushberries in Canada.

 The minor use project for carrots was initiated in 2005 by AAFC-PMC and the U.S. IR-4 program as a result of minor use priorities established by growers and extension personnel inCanada and the U.S.  The minor use projects for ginseng and apples were initiated in 2007 and 2010 respectively by AAFC-PMC as a result of minor use priorities established by growers in Canada and the need to address the pest management technology gap.  These minor use label expansions for Allegro 500 F Fungicide are a significant step towards developing a more robust and sustainable pest management toolkit for diseases on these crops in Canada.

 The following is provided as a general outline only.  Users should consult the complete label before using Allegro 500F Fungicide.

Carrots: Allegro 500F Fungicide can be used for control of Alternaria leaf blight and Sclerotinia white mold at a rate of 1.16 L product per hectare in 200 – 600 L water per hectare as a foliar spray.  A maximum of four (4) applications per season can be made at an interval of 7 days.  Consult the label for specific disease timings and do not apply within 7 days of harvest for carrots. 

 Allegro 500F Fungicide should be used in an integrated pest management program and in rotation with other management strategies to adequately manage resistance.

 Follow all other precautions and directions for use on the Allegro 500F Fungicide label carefully.

 We wish to thank the personnel of ISK Biosciences Corporation and Syngenta Crop Protection Canada Inc. for their support of this registration and the personnel of the Pest Management Regulatory Agency for evaluating and approving this important pest management tool.

 For copies of the new minor use label contact Jim Chaput, OMAFRA, Guelph (519) 826-3539 or Marion Paibomesai, OMAFRA Vegetable Specialist at Guelph (519) 826-4963 or visit the Syngenta Canada website at



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