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dc.contributor.authorVan Pelt, N. S.
dc.contributor.authorWest, N. E.
dc.date.accessioned2020-09-23T20:16:12Z
dc.date.available2020-09-23T20:16:12Z
dc.date.issued1993-01-01
dc.identifier.citationVan Pelt, N. S., & West, N. E. (1993). Interactions of pinyon and juniper trees with tebuthiuron applications at 2 matched reinvaded sites in Utah. Journal of Range Management, 46(1), 76-81.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4002451
dc.identifier.urihttp://hdl.handle.net/10150/644587
dc.description.abstractTebuthiuron [N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]N,N'-dimethylurea] controls small trees in regrown pinyon-juniper woodland chainings. Precise applications by hand minimize cost and damage to forage plants. Little information exists on the applicability of local trials to varying Intermountain sites slated for reinvestment. We conducted 2 balanced factorial experiments at well-separated sites in the Great Basin and Colorado Plateau. Four rates (0.12, 0.25, 0.50, and 0.75 gm a.i. per 130 dm3 crown volume) of tebuthiuron boluses were applied to tree stembase, mid-crown, or dripline placements. Four size classes (12-99, 100-299, 300-599, and 600-1099 dm3 crown volume) of Utah juniper [Juniperus osteosperma (Torr.) Little] and single needle (Pinus monophylla Torr. and Frem.), and Rocky Mountain (P. edulis Engelm.) pinyon trees were treated in September 1985. Defoliation and mortality levels were estimated 24 and 36 months following treatments. Both sites received highly similar amounts of herbicide and cumulative precipitation. Analysis of variance showed that the presence and strength of main effects and first order interactions was largely site-specific. Pinyon was more susceptible than juniper at tither site. Medium-sized and large saplings were apparently more readily defoliated than seedlings and small saplings. Dosage effects were generally nonlinear for both species. The highest, most rapid and most uniform defoliation and mortality of trees resulted from application of tebuthiuron at the stem bases. This placement option has strong operational advantages and minimizes damage to forage plants beneath trees.
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.subjectPinus monophylla
dc.subjectwoody plant invasion
dc.subjectJuniperus osteosperma
dc.subjectplacement
dc.subjectPinus edulis
dc.subjecttebuthiuron
dc.subjectbrush control
dc.subjectinvasion
dc.subjectchemical control
dc.subjectapplication rates
dc.subjectrangelands
dc.subjectUtah
dc.titleInteractions of pinyon and juniper trees with tebuthiuron applications at 2 matched reinvaded sites in Utah
dc.typetext
dc.typeArticle
dc.identifier.journalJournal of Range Management
dc.description.noteThis material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.
dc.description.collectioninformationThe Journal of Range 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.description.admin-noteMigrated from OJS platform August 2020
dc.source.volume46
dc.source.issue1
dc.source.beginpage76-81
refterms.dateFOA2020-09-23T20:16:12Z


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