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Waterhemp Control in Sugarbeet (05/04/17)

Congratulations if you planted sugarbeet the week of April 9 and are starting to see emergence this week. Your sugarbeet crop should reach the 2-lf stage by approximately May 12th or timing for application of one of the chloroacetamide herbicides for waterhemp control.

Waterhemp Control in Sugarbeet

Congratulations if you planted sugarbeet the week of April 9 and are starting to see emergence this week. Your sugarbeet crop should reach the 2-lf stage by approximately May 12th or timing for application of one of the chloroacetamide herbicides for waterhemp control.

But, what if you didn’t plant? Respectfully stated, you’re in no-man’s land. That is, you are not likely to reach the 2-lf stage before the projected waterhemp emergence date of May 19 if you are planting sugarbeet this week. What are other options? I recommend you apply S-metolachlor, ethofumesate or S-metolachlor plus ethofumesate PRE, to provide control of early emerging small-seeded broadleaves including waterhemp until early postemergence (lay-by) application of chloroacetamide herbicides. A farmer called today and said, ‘yes, but it might not rain for 10 days.’ My reply was, precipitation was also spotty in 2016 after planting and PRE followed by a split application of chloroacetamide herbicides applied lay-by was my best treatment for waterhemp control.

Tom Peters

Extension Sugarbeet Agronomist

NDSU & U of MN



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