Weed-Suppressive Bacteria Fail to Control Bromus tectorum Under Field Conditions

dc.contributor.authorReinhart, Kurt O.
dc.contributor.authorCarlson, Chris H.
dc.contributor.authorFeris, Kevin P.
dc.contributor.authorGermino, Matthew J.
dc.contributor.authorJandreau, Clancy J.
dc.contributor.authorLazarus, Brynne E.
dc.contributor.authorMangold, Jane
dc.contributor.authorPellatz, Dave W.
dc.contributor.authorRamsey, Philip
dc.contributor.authorRinella, Matthew J.
dc.contributor.authorValliant, Morgan
dc.date.accessioned2022-09-09T20:33:10Z
dc.date.available2022-09-09T20:33:10Z
dc.date.issued2020-11
dc.description© This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.description.abstractThe exotic winter annual grass Bromus tectorum L. (downy brome or cheatgrass) infests millions of hectares of western rangelands. Weed-suppressive bacteria (ACK55 and D7 strains of Pseudomonas fluorescens Migula 1895) have been shown to reduce B. tectorum populations in eastern Washington. Unfortunately, outside of Washington, little is known about the efficacy of these or other weed-suppressive bacteria. We used Petri-plate and plant-soil bioassays to test effects of ACK55 and D7 on B. tectorum from Montana and Wyoming. We also tested effects of ACK55 on B. tectorum at six field sites in Montana and one in Wyoming. P. fluorescens reduced B. tectorum germination and root and shoot lengths in Petri-plates but had no effect on plants during growth chamber plant-soil bioassays or field experiments. Bromus arvensis L. (field brome or Japanese brome), a species similar to B. tectorum, was prevalent at two of our sites, and ACK55 was ineffective against B. arvensis as well. Our findings contribute to a growing body of evidence that the ACK55 and D7 strains of P. fluorescens are not reliable tools for controlling B. tectorum in the Northern Great Plains, Central Rocky Mountains, and elsewhere.en_US
dc.identifier.citationWeed-Suppressive Bacteria Fail to Control Bromus tectorum Under Field Conditionsen_US
dc.identifier.issn1550-7424
dc.identifier.urihttps://scholarworks.montana.edu/handle/1/17109
dc.language.isoen_USen_US
dc.publisherElsevier BVen_US
dc.rightscc-by-nc-nden_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.subjectweed-suppressive bacteriaen_US
dc.titleWeed-Suppressive Bacteria Fail to Control Bromus tectorum Under Field Conditionsen_US
dc.typeArticleen_US
mus.citation.extentfirstpage760en_US
mus.citation.extentlastpage765en_US
mus.citation.issue6en_US
mus.citation.volume73en_US
mus.identifier.doi10.1016/j.rama.2019.07.006en_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.departmentLand Resources & Environmental Sciences.en_US
mus.relation.universityMontana State University - Bozemanen_US

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