Seasonal variation in utilization estimates on sideoats grama plants

Persistent Link:
http://hdl.handle.net/10150/277939
Title:
Seasonal variation in utilization estimates on sideoats grama plants
Author:
DeMuth, Carol Ann, 1957-
Issue Date:
1990
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The variability in utilization estimates using seasonal production data from clipped sideoats grama plants was studied in southeastern Arizona. Three intensities of clipping at four seasons were studied. Regrowth was also examined. Current growth was highest in October and lowest in June, whereas, standing dead material was lowest in February and highest in June. By April 1986, 39% of peak current growth was already produced. Total peak standing crop occurred in October. The sum of current growth and regrowth from heavy clipping was greater than for plants clipped heavily only in October. The opposite was true for moderate and control clippings. Actual utilization was calculated using peak current growth as a basis for calculating percentage utilization. Relative utilization was based on standing crop at each season of clipping treatments. Generally, relative utilization estimates overestimated utilization when compared to actual utilization estimates based on current growth.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Agriculture, Range Management.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College
Degree Grantor:
University of Arizona
Advisor:
Ogden, Phil R.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleSeasonal variation in utilization estimates on sideoats grama plantsen_US
dc.creatorDeMuth, Carol Ann, 1957-en_US
dc.contributor.authorDeMuth, Carol Ann, 1957-en_US
dc.date.issued1990en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThe variability in utilization estimates using seasonal production data from clipped sideoats grama plants was studied in southeastern Arizona. Three intensities of clipping at four seasons were studied. Regrowth was also examined. Current growth was highest in October and lowest in June, whereas, standing dead material was lowest in February and highest in June. By April 1986, 39% of peak current growth was already produced. Total peak standing crop occurred in October. The sum of current growth and regrowth from heavy clipping was greater than for plants clipped heavily only in October. The opposite was true for moderate and control clippings. Actual utilization was calculated using peak current growth as a basis for calculating percentage utilization. Relative utilization was based on standing crop at each season of clipping treatments. Generally, relative utilization estimates overestimated utilization when compared to actual utilization estimates based on current growth.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectAgriculture, Range Management.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorOgden, Phil R.en_US
dc.identifier.proquest1341487en_US
dc.identifier.bibrecord.b26354627en_US
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