The company that developed a genetically altered strain of rice intended to resist a herbicide has been sued again by Arkansas rice farmers claiming negligence and seeking compensation.

The suit names Bayer CropScience AG, a subsidiary of Bayer AG, and Aventis CropScience USA Inc., also a Bayer subsidiary, as defendants. Bayer developed the strain of rice known as LLRICE 601, engineered to resist Bayer’s “Liberty” herbicide.