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Native forb response to sulfometuron methyl on medusahead-invaded rangeland in Eastern Oregon

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dc.creator Louhaichi, Mounir
dc.creator Carpinelli, Michael F.
dc.creator Richman, Lesley M.
dc.creator Johnson, Douglas E.
dc.date.accessioned 2012-05-25T22:24:14Z
dc.date.available 2012-05-25T22:24:14Z
dc.date.issued 2012
dc.identifier.citation Louhaichi Mounir, Carpinelli Michael F., Richman Lesley M., Johnson Douglas E. (2012) Native forb response to sulfometuron methyl on medusahead-invaded rangeland in Eastern Oregon. The Rangeland Journal 34, 47–53. en_US
dc.identifier.uri http://hdl.handle.net/1957/29395
dc.description.abstract Medusahead [Taeniatherum caput-medusae (L.) Nevski], a non-native, winter-annual grass (Poaceae), has invaded rangelands throughout the western USA. Medusahead is an aggressive competitor that crowds out native plants and reduces forage for wildlife and livestock. Sulfometuron methyl is a sulfonylurea herbicide used to control medusahead, but its effect on non-target native forbs is largely unknown. We assessed the impact of an autumn application of sulfometuron methyl on native forbs on the sagebrush/bunchgrass steppe of eastern Oregon over 3 years. We applied 70 g a.i./ha (1.0 oz. a.i./acre) of sulfometuron methyl to randomly selected locations on three sites in a split-plot-in-time (repeated-measures) experimental design. Three years after treatment, 6 of the 11 forb species studied had a significant reduction in density (P < 0.05), with densities ranging from 3 to 60% of the pre-treatment levels. The results of this study suggest that the benefit of medusahead control by sulfometuron methyl should be weighed against the damage to non-target species. en_US
dc.description.sponsorship The authors acknowledge the Oregon Agricultural Experiment Station, Oregon State University, the USDA-Agricultural Research Service, and the Burns District of the USDI-Bureau of Land Management for support and funding. en_US
dc.language.iso en_US en_US
dc.publisher Australian Rangeland Society en_US
dc.relation.ispartofseries The Rangeland journal en_US
dc.relation.ispartofseries Vol. 34 no. 1 en_US
dc.subject Great Basin en_US
dc.subject image processing en_US
dc.subject invasive annual grass en_US
dc.subject non-target en_US
dc.subject Oust en_US
dc.subject population dynamics en_US
dc.subject Taeniatherum caput-medusa en_US
dc.subject VegMeasure en_US
dc.title Native forb response to sulfometuron methyl on medusahead-invaded rangeland in Eastern Oregon en_US
dc.type Article en_US
dc.identifier.doi 10.1071/RJ11021


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