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No wonder wheat and barley farmers in Europe and Australia have trouble killing ryegrass and black-grass. These plants have a master gene that makes some strains resistant to all major...
With its jumble of leaves and pointy, green, flower spikes, the plant known as pigweed or palmer amaranth (Amaranthus palmeri) isn’t much to look at. But to farmers in the southeastern...
Herbicide-resistant superweeds threaten to overgrow U.S. fields, so agriculture companies have genetically engineered a new generation of plants to withstand heavy doses of multiple,...