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dc.contributor.authorMadsen, M. D.
dc.contributor.authorDavies, K. W.
dc.contributor.authorMummey, D. L.
dc.contributor.authorSvejcar, T. J.
dc.date.accessioned2021-03-08T18:43:06Z
dc.date.available2021-03-08T18:43:06Z
dc.date.issued2014-01
dc.identifier.citationMadsen, M. D., Davies, K. W., Mummey, D. L., & Svejcar, T. J. (2014). Improving restoration of exotic annual grass-invaded rangelands through activated carbon seed enhancement technologies. Rangeland Ecology & Management, 67(1), 61–67.
dc.identifier.issn0022-409x
dc.identifier.doi10.2111/REM-D-13-00050.1
dc.identifier.urihttp://hdl.handle.net/10150/657030
dc.description.abstractCost-efficient strategies for revegetating annual grass-infested rangelands are limited. Restoration efforts typically comprise a combination of pre-emergent herbicide application and seeding to restore desired plant materials. However, practitioners struggle with applying herbicide at rates sufficient to achieve weed control without damaging nontarget species. The objective of this research was to determine if seed enhancement technologies using activated carbon would improve selectivity of the pre-emergent herbicide imazapic. Bluebunch wheatgrass (Pseudoroegneria spicata) seed was either untreated, coated with activated carbon, or incorporated into "herbicide protection pods" (HPPs) made of activated carbon through a newly developed seed extrusion technique. In a grow-room facility, bluebunch wheatgrass seeds were sown in pots that contained seed of the exotic-annual grass downy brome (Bromus tectorum). After planting, pots were sprayed with 70, 105, 140, or 210 g acid equivalent (ae) · ha-1 of imazapic or left unsprayed. Where herbicide was not applied, downy brome biomass dominated the growing space. Imazapic effectively controlled downy brome and untreated bluebunch wheatgrass. Seed coating improved bluebunch wheatgrass tolerance to imazapic at 70 g ae · ha-1. HPPs provided protection from imazapic at all application rates. When untreated seeds and HPPs are compared at the four levels of herbicide application (excluding the no herbicide level), HPPs on average were 4.8-, 3.8-, and 19.0-fold higher than untreated seeds in density, height, and biomass, respectively. These results indicate that HPPs and, to a lesser extent, activated carbon-coated seed have the potential to further enhance a single-entry revegetation program by providing land practitioners with the ability to apply imazapic at rates necessary for weed control while minimizing nontarget plant injury. Additional research is merited for further development and evaluation of these seed enhancement technologies, including field studies, before they can be recommended as restoration treatments. © 2014 The Society for Range Management.
dc.language.isoen
dc.publisherSociety for Range Management
dc.relation.urlhttps://rangelands.org/
dc.rightsCopyright © Society for Range Management.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectannual grasses
dc.subjectbluebunch wheatgrass (Pseudoroegneria spicata)
dc.subjectdowny brome/cheatgrass (Bromus tectorum)
dc.subjectherbicide protection pod
dc.subjectrevegetation
dc.subjectseed coating
dc.titleImproving restoration of exotic annual grass-invaded rangelands through activated carbon seed enhancement technologies
dc.typeArticle
dc.typetext
dc.identifier.journalRangeland Ecology & Management
dc.description.collectioninformationThe Rangeland Ecology & Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.source.journaltitleRangeland Ecology & Management
dc.source.volume67
dc.source.issue1
dc.source.beginpage61
dc.source.endpage67
refterms.dateFOA2021-03-08T18:43:06Z


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