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Managing glyphosate resistant weeds

May 21, 2010
From Wayne Schoper, Extension Educator, Nicollet County

Roundup (Glyphosate) herbicide has been around for over thirty years. It was first discovered in the 1950's when a chemical company was conducting research for new detergent products. It came out in the 1970's as a new herbicide that would kill most plants including corn and soybeans. During the early 1990's scientists developed soybean varieties that could tolerate applications of Roundup herbicide. This opened the door to development of Roundup Ready technology that has seen the development of corn, alfalfa and sugar beets among many others that have been genetically altered to tolerate Roundup while the herbicide controlled all of the weeds in the field. This meant no more cultivating or use of many other commonly used herbicides. By the year 2010, probably 90% of all soybeans and 80-90% of all corn utilizes Roundup Ready technology. This has meant very clean fields and less time spent in the field.



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