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dc.contributor.authorForwood, J. R.
dc.contributor.authorMagai, M. M.
dc.date.accessioned2020-09-23T19:04:10Z
dc.date.available2020-09-23T19:04:10Z
dc.date.issued1992-11-01
dc.identifier.citationForwood, J. R., & Magai, M. M. (1992). Clipping frequency and intensity effects of big bluestem yield, quality, and persistence. Journal of Range Management, 45(6), 554-559.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4002571
dc.identifier.urihttp://hdl.handle.net/10150/644529
dc.description.abstractThis study was initiated to determine the effects of defoliation frequency (based on amount of growth present), intensity, and length of grazing season on quantity and quality of big bluestem (Andropogon gerardi Vitman) in the Southern corn belt and to provide further data regarding the reasons for rapid quality decline of warm-season grasses. Three clipping frequencies (when plants reached heights of 30, 41, 51 cm) at 2 intensities (stubble heights of 10 and 20 cm) were imposed on established plots of pure big bluestem (cv. Kaw). Harvest season length was studied by terminating clipping on 15 August and 15 September as 2 separate treatments. Two years of data indicated that big bluestem regrows insufficiently after 15 August to warrant additional harvests under the imposed managements. Prolonged regrowth and leaving a short stubble of 10 cm resulted in greatest yield. Short stubble led to greater reductions in nonstructural carbohydrates, but did not damage the stand compared to pre-study measurements. Nonstructural carbohydrate levels and stand composition improved with taller stubble. In vitro dry matter digestibility and crude protein were higher on treatments clipped to leave a 10-cm stubble. The greatest proportion of leaves resulted from treatments where a 20-cm stubble remained. These results agree with studies indicating that leaf maturity is more responsible for lower quality forage than is the amount of stem material present in the stand. Our results indicate heavy use can be more safely accomplished in the Southern corn belt than for areas to the west because big bluestem can be more intensively defoliated in the Southern corn belt (10-cm) than that recommended for other areas (20 to 40 cm).
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.subjectcarbohydrates
dc.subjectpersistence
dc.subjectMissouri
dc.subjectprotein content
dc.subjectcutting frequency
dc.subjectAndropogon gerardii
dc.subjectcrude protein
dc.subjectgrazing intensity
dc.subjectin vitro digestibility
dc.subjectdefoliation
dc.subjectquality
dc.subjectgrazing
dc.subjectsimulation
dc.subjectforage
dc.titleClipping frequency and intensity effects of big bluestem yield, quality, and persistence
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.volume45
dc.source.issue6
dc.source.beginpage554-559
refterms.dateFOA2020-09-23T19:04:10Z


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