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Reflex: fomesafen

Author: OMAFRA Staff
Creation Date: 25 November 2002
Last Reviewed: 21 January 2008
Pub 75: Guide to Weed Control > Notes on Herbicides > Reflex: fomesafen
Excerpt from Chapter 4, Publication 75, Guide to Weed Control, Order this publication
Trade Names
Reflex
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, and is registered for use on a number of different edible bean market classes, refer to Table 7-1, for specific crop registrations.
Sensitive Weeds Redroot pigweed, common ragweed, wild mustard, lady's-thumb, black nightshade, cocklebur; suppression of velvetleaf, lamb's-quarters and tall waterhemp.
Uptake and Translocation Taken up through foliage. Not readily translocated.
Mode of Action Cell-membrane disrupter.
Basis of Selectivity  Beans metabolize fomesafen. Some initial bronzing of crop leaves may occur, but plants normally outgrow this condition without any effect on maturity or yield.
Application Methods Early postemergence to weeds and crop. Apply when beans are 1-2 trifoliate and weeds are at the 2- to 4-leaf stage. Good coverage is essential for optimum weed control. Apply in 200-350 L of water/ha at a pressure between 245-420 kPa. Always add an adjuvant such as Agral 90 (0.25% v/v) or Turbocharge (0.5% v/v). Pinnacle or Venture may be tank-mixed for additional weed control.
Residual Activity Persistence depends on weather and soil conditions (more persistent under dry conditions). Rotation to field corn, dry beans or soybeans the following year. Winter wheat may be planted 90 days after treatment. All other crops require a field bioassay.
Unique Characteristics Do not apply Reflex to any field more than once every 2 years.
Manufacturer / Registrant Syngenta Crop Protection Canada Inc.

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