Scientists Try Bacteria to Halt Invading Cheatgrass in West

It sounds like science fiction: An unstoppable invader is taking over the West and the best hope to stop its relentless advance is a small team of scientists. But that's what is happening in southwest Idaho, where experiments are underway to determine if soil bacteria can halt the century-long assault of non-native cheatgrass, which sends out roots that cheat other plants of water in the spring."We hope that we can identify the effectiveness of the bacteria on annual grasses and to identify non-target risk effects," said Matt Germino, a research ecologist with the U.S. Geological Survey running the experiments at three scattered sites of about an acre each. Cheatgrass dries out in the summer, transforming into extraordinarily effective tinder for wildfires. The fires then kill competing native plants and destroy habitat needed by cattle ranchers and more than 300 species of wildlife, including the imperiled sage grouse bird. The results are huge, cheatgrass-filled landscapes that serve as fuel for frequent wildfires, some reaching hundreds of square miles.