Seeking to better understand herbicide resistance, researchers exposed more than 70 million grain amaranth seeds to a soil-based herbicide. Though preliminary, the findings suggest that the mutation rate in amaranth is very low, and that low-level herbicide application contributes little — if anything — to the onset of new mutations conferring resistance, say researchers at the University of Illinois.

Though the wet spring weather of 2019 has continued to pose challenges to producers, some soybeans are beginning to emerge. But even if stands look thin, think twice before replanting, say researchers at the University of Wisconsin.