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The Pest Management Regulatory Agency (PMRA) has approved a minor use label expansion registration for Zidua herbicide for suppression of foxtail (yellow and green) and redroot pigweed in carrots grown in muck soil (soil organic matter >7%) in Canada. Zidua herbicide was already labeled for management of weeds on a wide range of crops in Canada. This minor use proposal was submitted by Agriculture and Agri-Food Canada’s Pest Management Centre as a result of minor use priorities established by growers and extension personnel.
The following is provided as an abbreviated, general outline only. Users should be making weed management decisions within a robust integrated weed management program and should consult the complete label before using Zidua herbicide.
Crop(s) | Target | Rate (mL product/ha) | Application Information | PHI (days) |
Carrots grown in muck soil (soil organic matter >7%) | Suppression of foxtail (yellow and green) and redroot pigweed | 180 | Apply post- emergent at the 2-3 leaf stage of carrot growth. Apply to carrots grown on muck soil only (OM > 7%). Level and duration of weed suppression may be reduced in muck soils with higher organic matter content. Apply in a minimum water volume of 100 L/ha. DO NOT apply to carrots prior to the 2- leaf stage or beyond the 3- leaf stage or crop injury may occur. DO NOT apply to carrots grown for seed production. DO NOT feed, forage or graze livestock in treated fields. DO NOT harvest carrots for livestock feed use. Maximum 1 application per year. | 45 |
Follow all other precautions, restrictions, and directions for use on the Zidua herbicide label carefully.
For a copy of the new minor use label contact your local extension specialist, regional supply outlet, or visit the PMRA label site http://www.hc-sc.gc.ca/cps-spc/pest/registrant-titulaire/tools-outils/label-etiq-eng.php
Source: Josh Mosiondz, minor use coordinator, OMAFA, Guelph, February 26, 2026.
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