Ohio State, Purdue partner to help farmers control marestail

'WEST LAFAYETTE, Ind. - Purdue and Ohio State University Extension have partnered to publish a new fact sheet aimed at helping farmers battle herbicide-resistant marestail and its yield-reducing affects on soybeans.

Marestail, also referred to as horseweed, primarily emerges in late summer into fall and again from late-March through June in both Indiana and Ohio. The weed competes with soybean plants for soil nutrients, space and water.

 

Mature marestail also can hinder soybean harvest, and it doesn't respond to treatment from one of the most commonly used herbicides.

 

"Most populations of marestail in Ohio and Indiana are resistant to glyphosate, and will not be controlled by burndown or post-emergence applications of glyphosate alone," said Mark Loux, Ohio State Extension weed scientist..'

 

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