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| DOI: | 10.2135/cropsci2005.11.0432 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/pdfs/47/2/757
Last checked: 11/16/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/articles/47/2/757
Last checked: 11/16/2016
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Beasley, Jeffrey S.;
Branham, Bruce E.;
Spomer, L. Arthur |
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| Author Affiliation: | Beasley: Louisiana State University, Baton Rouge, Louisiana; Branham and Spomer: Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, Illinois |
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| Title: | Plant growth regulators alter Kentucky bluegrass canopy leaf area and carbon exchange |
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| Section: | Research
Other records with the "Research" Section
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| Source: | Crop Science. Vol. 47, No. 2, March/April 2007, p. 757-766. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 10 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/47/2/757
Last checked: 11/16/2016
Notes: Abstract only |
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| Keywords: | TIC Keywords: Plant growth regulators; Carbon dioxide exchange rate; Trinexapac-ethyl; Paclobutrazol; Poa pratensis; Leaf area; Canopy; Application rates; Application timing
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| Abstract/Contents: | "Turf managers apply plant growth regulators (PGRs) throughout the growing season to reduce clipping production, provide a uniform canopy, and increase color. Reduced efficacy of trinexapac-ethyl (TE) [4-(cyclopropyl-Α-hydroxy-methylene)-3,5-dioxocyclohexane carboxylic acid ethyl ester] and paclobutrazol (PAC) [(2RS, 3RS)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4- triazol-1-yl) pentan-3-ol] has been reported during warmer summer months. Plant growth regulator dissipation and Kentucky bluegrass (KBG; Poa pratensis L.) clipping production, canopy leaf area, and carbon exchange rates (CERs) were measured following single TE or PAC applications applied at three rates and three application timings. Warmer summer conditions reduced the intensity and duration of TE and PAC growth suppression compared to spring applications. Plant growth regulator applications above the manufacturers label rate provided no additional suppression. Residues of PGRs were analyzed by HPLC-UV. Warmer temperatures increased TE and PAC uptake, but accelerated the rate of PGR dissipation. Carbon exchange rates were measured weekly on ground (CERG) and leaf (CERL) area bases. Treatment with PGRs resulted in decreased leaf area early during inhibition followed by increased rate of leaf area production. Changes in canopy leaf area were greatest in spring and PAC caused the greatest change in leaf area. Changes in CERG reflected changes in leaf area. Paclobutrazol generally increased CERL during periods of clipping suppression, while TE had no effect on CERL." |
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| Language: | English |
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| References: | 31 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Beasley, J. S., B. E. Branham, and L. A. Spomer. 2007. Plant growth regulators alter Kentucky bluegrass canopy leaf area and carbon exchange. Crop Sci. 47(2):p. 757-766. |
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| DOI: 10.2135/cropsci2005.11.0432 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/cs/pdfs/47/2/757
Last checked: 11/16/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/articles/47/2/757
Last checked: 11/16/2016
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: SB 183 .C7 |
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