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Mike Gregg

This presentation aired as part of the Great Basin LCC webinar series on August 28, 2017. Speakers include Matt Germino, U.S. Geological Survey and Great Basin LCC; David Pyke, U.S. Geological Survey; Richard Lee, Bureau of Land Management; Mike Gregg, U.S. Fish and Wildlife Service; Jane Mangold, Montana State University; and Brynne Lazarus, U.S. Geological Survey.Download the presentation slides: http://bit.ly/2wHxN9CDescription: Cheatgrass (Bromus tectorum) and medusahead (Taeniatherum caput-medusae) invasions pose a serious threat to Great Basin ecosystems. Managers and scientists are hopeful that strains of the bacterium Pseudomonas fluorescens that have been selected for their weed-suppressive properties in...
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Evaluation of Weed-Suppressive Bacteria for Control of Exotic Annual Grasses
FY2017The Integrated Rangeland Fire Management Strategy Actionable Science Plan places a high priority on assessing control measures for invasive annual grasses, which provide fuel for rangeland fire and impede restoration of desirable perennials. Weed-suppressive strains of the bacterium Psuedomonas fluoresens (P.f.) are an emerging but yet untested tool for selectively reducing these annual grasses. P.f. may suppress annuals for approximately 2-5 years, bridging the short-term action of herbicides and long-term resistance provided as native bunchgrasses recover. In 2015-2016, the USGS responded to a request from the Idaho sage grouse action group to establish a series of field-based experiments to assess the efficacy...
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