CROP SCENE INVESTIGATION – 22 SOLVED: Whats the culprit in Bill’s sprayer tank?


Bill was correct in believing that corn, a monocot crop, can tolerate an application of most cereal herbicides. Unfortunately, corn can’t withstand cereal herbicides that control grassy weeds.

In this case, Bill’s Roundup Ready corn suffered serious injury after being sprayed with Achieve Liquid, a grass herbicide. Only 20 to 30 litres of Achieve Liquid and Buctril-M remained in the tank when Bill topped it up with water and glyphosate to spray his corn. But it was enough to cause considerable damage to Bill’s cornfield, explains Mike Cowbrough, the Ontario Ministry of Agriculture, Food and Rural Affairs Weed Management Lead.

Better Farming - February 2010