Sweet Corn & Seed Corn

MINOR USE LABEL EXPANSION

IMPACT HERBICIDE FOR THE CONTROL OF LABELLED WEEDS ON SWEET CORN AND SEED CORN


The Pest Management Regulatory Agency (PMRA) recently announced the approval of a minor use label expansion for IMPACT Herbicide (topramezone) for the control of labelled weeds on sweet corn and seed corn in Canada.

IMPACT Herbicide is a Group 27 Herbicide, which contains 336 g/L of the active ingredient “topramezone” in a suspension formulation. It is a systemic post-emergence herbicide for selective control of grasses and broadleaf weeds. It was already registered in Canada (Pest Control Product Reg. No. 28141) for the control of common lamb’s quarter, lady’s thumb, common ragweed, eastern black nightshade, wild mustard, redroot pigweed and green pigweed, and suppression of grass weeds such as green foxtail, yellow foxtail, barnyard grass and large crabgrass in field corn (including both conventional and herbicide tolerant varieties).

IMPACT Herbicide must be used as a broadcast ground treatment in tank mix with atrazine (37 mL Impact + 1.04 L Aatrex 480/ha) with Assist (1.25% v/v) +UAN (1.25% v/v). It is recommended to apply IMPACT Herbicide when the corn is at the 1 to 7 leaf stage, broadleaf weeds are at the 1 to 8 leaf stage and grass weeds are at the 1 to 4 leaf stage. Please see the label for details of use pattern.

This label expansion will provide corn growers with a much needed weed management tool to help manage one of their most challenging problems of controlling both broad leaf and certain grass weeds in corn fields for many years in Canada.

This minor use project was initiated by the Agriculture and Agri-Food Canada, Pest Management Centre (AAFC-PMC) Minor Use Pesticide Program in 2007. Original data generation came in part from the Pest Management Centre’s Minor Use Research Program. This label expansion, achieved through the User Requested Minor Use Label Expansion (URMULE) process of PMRA, which was sponsored by AAFC-PMC in response to minor use priorities established by corn producers, processors, extension personnel and researchers in Canada.

The sponsors wish to thank the personnel of Amvac Chemical Corporation (Registrant) and BASF Canada Inc. (Distributor) for their support of this registration.

For copies of the new minor use label contact:
Kalidas Subedi at the Pest Management Centre
Email: kalidas.subedi@agr.gc.ca
Telephone: 613-759-5536

Or the registrant BASF Canada
Telephone: 1-877-371-2273
Website: www.agsolutions.ca

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