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Blazer: acifluorfen

Author: OMAFRA Staff
Creation Date: 25 November 2002
Last Reviewed: 21 January 2008
Pub 75: Guide to Weed Control > Notes on Herbicides > Blazer
Excerpt from Chapter 4, Publication 75, Guide to Weed Control, Order this publication
Trade Names Blazer
Formulation Sn
Guaranteed active concentration 240 g/L
Groups  14
Ontario Schedule 2
Winter Storage B
Chemical Family Diphenyl ether
Crop and/or Non-Crop Registrations Soybeans
Sensitive Weeds Annual broadleaf weeds including: cocklebur, jimsonweed, lady's-thumb, lamb's-quarters, wild mustard, redroot pigweed, common ragweed and Eastern black nightshade. Suppression of perennial weeds including: Canada thistle, hedge bindweed, field bindweed and common milkweed.
Uptake and Translocation Taken up through the foliage. Not readily translocated.
Basis of Selectivity  Metabolism by tolerant species.
Application Methods Postemergence when weeds are small and actively growing. Apply in 200-400 L/ha of water with a pressure of 275-400 kPa. Soybeans are tolerant after the first trifoliate-leaf stage. Thorough coverage is necessary. The use of flat fan nozzles is recommended. Do not add adjuvants to acifluorfen applied at the full rate. Basagran may be tank-mixed with acifluorfen for control of additional broadleaf weeds including velvetleaf. When tank-mixing Basagran and acifluorfen, it is recommended to add 1 L/ha of Assist Oil Concentrate.
Residual Activity Essentially none.
Unique Characteristics Acifluorfen is not volatile. Significant crop injury can be expected if acifluorfen is applied during hot, humid weather or if the crop is stressed due to previous herbicide injury, flooding, drought or cold conditions prior to the application. Cool weather or drought may delay control. Rainfall within 6 hours after application may reduce effectiveness. Since there is no residual activity, a new flush of weeds may emerge after the first flush has been controlled.
Manufacturer / Registrant United Phosphorus Inc. 

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