The discovery of waterhemp that is tolerant to a seventh class of herbicide action means growers have to double down on weed management by including cultural and mechanical controls to fight resistance.
As farmers across the Corn Belt were wrapping up the 2019 harvest, the buzz among corn and soybean producers centered on reports from Illinois that the tough-to-control weed, waterhemp, had shown resistance to yet another class of chemical weed control — those in Group 15.
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