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United States Department of Agriculture

Agricultural Research Service

Research Project: Develop Improved Plant Genetic Resources to Enhance Pasture and Rangeland Productivity in the Semiarid Regions of the Western U.S.

Location: Forage and Range Research

Title: Evaluation of regionally-collected sideoats grama and big galleta grass for wildfire revegetation in the Eastern Upper Mojave Desert

Authors
item Staub, Jack
item Robbins, Matthew
item Waldron, Blair

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: March 20, 2013
Publication Date: April 9, 2013
Citation: Staub, J.E., Robbins, M.D., Waldron, B.L. 2013. Evaluation of regionally-collected sideoats grama and big galleta grass for wildfire revegetation in the Eastern Upper Mojave Desert. Meeting Abstract. National Native Seed Conference Abstract Book, Pg 2

Technical Abstract: Increased wildfires in the western U.S. are due to the cyclic accumulation and burning of invasive annual plants such as cheatgrass (Bromus tectorum) and red brome (B. rubens), which reduces native rangeland species and results in servere economic losses and land degradation. Fire was not prevalent in the Upper Mojave Desert prior to the invasion of red brome, but recent fires have had substantial environmental, economic, and social impacts. Rangeland plants need to be developed that compete with the invasive weeds to break the fire cycles and establish substainable and diverse ecosystems. Two factors affecting persistence after wildfires are seed predation and regrowth after burns. A program was established to develop big galleta (Pleuraphis rigida) and sideoats grama (Bouteloua curtipendula) that will establish, persist, compete with weeds, and revegetate after fires. These grass species possess tolerance to grazing and drought, creeping ability, large plant stature, and regrowth after fire challenge (data to be presented). No cultivars of big galleta have been released, and the current cultivars of sideoats grama were developed for the Great Plains. Thus, these species are being collected from Colorado, Utah, Arizona and Nevada. The Beaver Dam Wash and The Red Cliffs Reserve in Washington County, UT have been selected as sites for evaluation of collected plant material. These evaluations will result in the identification of plant materials for subsequent use in plant improvement to increase sustainability, reduce the impact of wildfires, and contribute to the reclamation of burned lands in the Upper Mojave Desert.

Last Modified: 11/28/2014
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