Fun for farmers — watching weeds die

Time-lapse videos help farmers identify signs of herbicide resistance

The weed science team at Ohio State University has come up with a set of videos that farmers might enjoy even more than binge watching “House of Cards” — weeds slowly dying after being sprayed with herbicides.

For every second of movie time shown, one hour of real time passes in the time-lapse videos.

The videos are meant to show growers what to expect from a herbicide as they try to manage weed infestations in their fields, weed specialist Mark Loux said in a release.

“The videos are a very good demonstration of how herbicides work on weeds,” he said. “Growers can use the videos to know what to look for when scouting their fields after a herbicide application to create a timeline of what the weeds should look like after spraying.

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weeds in a farmer's field

“This information is helpful for growers to determine if the weeds in their fields have developed a resistance to the herbicide and also can help them in diagnosing injuries to their crops.”

The series includes 14 time-lapse videos depicting eight different herbicide sites of action on a variety of weeds. Loux said the videos include a demonstration of a herbicide’s impact on waterhemp, which is becoming a serious problem for Midwest growers because of resistance to glyphosate.

The series can be viewed on the Ohio State University Weed Science YouTube channel.

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