The study aimed to review the main aspects of Senecio spp. poisoning in Rio Grande do Sul, sou-thern Brazil, in relation to the pathology, pathogenesis and epidemiology of this important cause of death in cattle in that State. The main climatic and environmental factors that apparently favor the emersion and plant establishment were revised. The occurrence of poisoning, which has increased its frequency in recent years in the state, and possible ways to control the plant, including the correct handling of soil and the use of less susceptible domestic species in invaded areas were also discussed.
Pyrrolizidine alkaloids; seneciosis; poisonous plants; environment; cattle; plant poisoning