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United States Department of Agriculture

Agricultural Research Service

Research Project: RESTORATION OF DOWNY BROME INFESTED RANGELANDS WITH GLYPHOSATE AND TRANSPLANTING WYOMING BIG SAGEBRUSH TO INCREASE SEED SOURCE DIVERSITY
2012 Annual Report


1a.Objectives (from AD-416):
To develop and implement a comprehensive, regional Ecologically-Based Invasive Plant Management (EBIPM) program to restore ecosystems threatened and dominated by cheatgrass/medusahead in Rock Creek watershed and the Great Basin.


1b.Approach (from AD-416):
University of Nevada, Reno (UN-Reno) and USDA, Agricultural Research Service (ARS) scientists will cooperate on a project to (1) demonstrate and assess, on a large-scale, the effectiveness of reduced rates of glyphosate for control of downy brome, and to determine its utility in stimulating a trajectory toward desired species, and (2) determine the influence of (a) site, (b) reduction of herbaceous competition, (c) season of planting and (d) plant source (nursery stock vs. indigenous) on survival of sagebrush transplants (refer to project proposal for more detailed information).


3.Progress Report:

The goal of this project was to develop and implement a comprehensive, regional Ecologically-Based Invasive Plant Management (EBIPM) program to restore ecosystems threatened and dominated by cheatgrass/ medusahead in Rock Creek watershed in the Great Basin which contributes directly to Subobjectives 1.1 and 1.2 of the Area-wide pest management project for annual grasses in the Great Basin.

Study sites were established at 3 locations to determine if aging crested wheatgrass stands can be diversified to increase wildlife habitat. Interim results were presented at the Society of Range Management Annual Meeting in Billings, Montana in February 2011. Spring-planted trials showed nursery stock survived more than wildling (not cultivated) transplants in each of the 3 plant communities where herbaceous (plants that are fleshy and wither after each growing season) cover was reduced with herbicide. In all plant communities combined, mean survival rate of nursery stock was 54.7%, compared with 16.7% for the wildling transplants. In outreach efforts, a field day was held in July 2011, 20 plus land managers and rangeland restoration specialists participated in the tour. A manuscript is submitted for publication outlining the results of this research and the implications for land managers implementing EBIPM programs.


Last Modified: 10/21/2014
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