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United States Department of Agriculture

Agricultural Research Service

Research Project: Discovery and Evaluation of Biological Control Agents of Medusahead Rye and Other Important Weeds of Western U.S. Rangelands

Location: Great Basin Rangelands Research

Project Number: 2060-22000-023-01-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Jun 1, 2010
End Date: May 31, 2015

Search for candidate biological control agents of exotic, invasive weeds of the western U.S. in the Mediterranean Basin and central Asia and study the candidates’ host-specificity and impact on the target weed.

Natural enemies (e.g. herbivores, pathogens) will be collected on target weeds in their native range. Characteristics of the natural enemy infestation, such as relative abundance, phenology, and impact on the target weed will be recorded. Natural enemies will be reared and identified by taxonomic specialists and assessed for their potential as biological control agents through host-specificity testing on non-target plant species. A list of test plant species for medusahead rye biological control candidates has been developed and submitted to TAG (USDA-APHIS Technical Advisory Group). The primary goal of this SCA is to discover and develop candidate biological control agents that are highly host-specific and damaging to medusahead rye.

Last Modified: 05/22/2017
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