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Chloroacetamide Family Herbicides (SOA15) Applied Postemergence for Waterhemp Control in Sugarbeet (06/09/16)

Outlook, S-metolachlor (Dual Magnum, Cinch, generics), and Warrant provide effective waterhemp control when applied early postemergence (lay-by) in sugarbeet.

Chloroacetamide Family Herbicides (SOA15) Applied Postemergence for Waterhemp Control in Sugarbeet

Outlook, S-metolachlor (Dual Magnum, Cinch, generics), and Warrant provide effective waterhemp control when applied early postemergence (lay-by) in sugarbeet. The idea is to apply these herbicides postemergence to sugarbeet and preemergence to grasses and small seeded broadleaf weeds including waterhemp. The concept extends the length of waterhemp control in sugarbeet (and soybean) into July and August, especially when split-applied between the 2- and 8-leaf stage in sugarbeet. Weeds emerged at the time of application will not be controlled but chloroacetamide family can be tank-mixed with glyphosate plus ethofumesate and either UpBeet or Betamix.

Outlook, S-metolachlor, and Warrant have their advantages and benefits; the chloroacetamide herbicide you choose will be based on factors important to you and details specific to your production practices. One factor to consider is preharvest interval. Do not harvest sugarbeet for at least 60 days, 60 days, or 70 days after the last treatment when sugarbeet are sprayed with Outlook, S-metolachlor or Warrant, respectively.

Tom Peters

Extension Sugarbeet Agronomist

NDSU & U of MN

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