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dc.contributor.authorTeague, W. R.
dc.contributor.authorDowhower, S. L.
dc.date.accessioned2020-09-18T05:00:31Z
dc.date.available2020-09-18T05:00:31Z
dc.date.issued2002-05-01
dc.identifier.citationTeague, W. R., & Dowhower, S. L. (2002). Irrigation impact on harvest efficiency in grazed Old World Bluestem. Journal of Range Management, 55(3), 260-265.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4003132
dc.identifier.doi10.2458/azu_jrm_v55i3_teague
dc.identifier.urihttp://hdl.handle.net/10150/643656
dc.description.abstractIn 1992 and 1993, pastures of WW-Spar Old World bluestem (Bothriochloa ischaemum L.) were maintained at 2 levels of soil water, rainfall and rainfall plus 25 mm/week of supplementary irrigation. At both moisture levels the grass was maintained at 2 levels of standing crop, averaging 1,548 and 2,154 kg ha(-1), using continuous variable stocking. Measurements were made to determine how different levels of soil moisture interacted with grazing intensity to change leaf area index, leaf-stem and live-dead ratios, tiller density, and the proportion of gross leaf production that was grazed (harvest efficiency). The proportions of live to dead, and leaf and stem biomass, remained constant under the different levels of soil water content. Soil water content alone had no effect on leaf area index, tiller density and the proportion of live or dead, leaf and stem. Winter tiller survival was significantly higher in the pastures with higher soil water content. Increasing soil water content and increasing grazing intensity interacted to reduce the proportion of dead leaf, increase production of new tillers, and increase the proportion of leaf grazed by decreasing leaf that died and was not grazed. This study indicates that if continuously grazed Old World bluestem was maintained at a standing crop of 1,500 kg ha(-1), harvest efficiency would be higher in wet years or under irrigation than if standing crop was higher.
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.subjectirrigated conditions
dc.subjectirrigated pastures
dc.subjectleaves
dc.subjectratios
dc.subjectstems
dc.subjectcontinuous grazing
dc.subjectBothriochloa ischaemum
dc.subjectrain
dc.subjectleaf area index
dc.subjectsteers
dc.subjecttillering
dc.subjectgrazing intensity
dc.subjectplant density
dc.subjectTexas
dc.subjectbiomass
dc.subjectplant height
dc.subjectsoil water
dc.subjectBothriochloa ischaemum
dc.subjectcontinuous variable stocking
dc.subjectherbage allowance
dc.titleIrrigation impact on harvest efficiency in grazed Old World bluestem
dc.typetext
dc.typeArticle
dc.identifier.journalJournal of Range Management
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.volume55
dc.source.issue3
dc.source.beginpage260-265
refterms.dateFOA2020-09-18T05:00:31Z


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