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| DOI: | 10.1614/WS-07-041.1 |
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| Web URL(s): | http://www.bioone.org/doi/full/10.1614/WS-07-041.1
Last checked: 12/16/2010
Access conditions: Item is within a limited-access website
http://www.bioone.org/doi/pdf/10.1614/WS-07-041.1
Last checked: 12/16/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Beam, Josh B.;
Askew, Shawn D. |
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| Author Affiliation: | Askew: Department of Plant Pathology, Physiology, and Weed Science, Virgina Polytechnic Institute and State University, Blacksburg, Virgina |
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| Title: | Fate of prehexadione calcium in annual bluegrass (Poa annua) and three turfgrasses |
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| Section: | Physiology, Chemistry, and Biochemistry
Other records with the "Physiology, Chemistry, and Biochemistry" Section
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| Source: | Weed Science. Vol. 55, No. 6, November/December 2007, p. 541-545. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| # of Pages: | 5 |
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| Related Web URL: | http://www.bioone.org/doi/abs/10.1614/WS-07-041.1
Last checked: 12/16/2010
Notes: Abstract only |
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| Keywords: | TIC Keywords: Fate; Prohexadione-calcium; Plant growth regulators; Agrostis stolonifera; Poa pratensis; Lolium perenne; Foliar uptake; Translocation; Mineral metabolism; Growth factors
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| Abstract/Contents: | "Prehexadione calcium is an experimental turfgrass growth regulator that selectively controls or suppresses annual bluegrass in desirable turfgrass such as creeping bentgrass, Kentucky bluegrass, and perennial ryegrass. To help explain interspecific differences in turfgrass and weed response to prohexadione calcium, two laboratory trials were conducted to measure 14C-prohexadione calcium absorption, translocation, and metabolism in these four species. Annual Kentucky bluegrass absorbed more prohexadione calcium than creeping bentrgrass and perennial ryegrass when averaged over harvest timing and trial. Radioactivity partitioning to other foliage did not differ between species but annual bluegrass and Kentucky bluegrass translocated more radioactivity to roots and evolved more radioactive COo2 than creeping bentgrass and perennial rygrass. Thin-layer chromatographic separations indicate radioactivity was translocated predominately as prehexadione calcium. When averaged over species and trial, 25 and 16% of recovered prohexadione calcium was metabolized within 1 h after treatment in treated leaves and other foliage, respectively. The rate of metabolic degradation was 0.4%h-1R in treated leaves and 0.4%h-1 in other foliage. Previous research indicates that annual and Kentucky bluegrass growht is suppressed more by prohexadione calcium than is growth of creeping bentgrass and perennial ryegrass. Increased prohexadione calcium absorption partially explained these interspecific differences in growth suppression." |
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| Language: | English |
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| References: | 12 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Beam, J. B., and S. D. Askew. 2007. Fate of prehexadione calcium in annual bluegrass (Poa annua) and three turfgrasses. Weed Science. 55(6):p. 541-545. |
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| DOI: 10.1614/WS-07-041.1 |
| Web URL(s):
http://www.bioone.org/doi/full/10.1614/WS-07-041.1
Last checked: 12/16/2010
Access conditions: Item is within a limited-access website
http://www.bioone.org/doi/pdf/10.1614/WS-07-041.1
Last checked: 12/16/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: b2203399a |
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