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| DOI: | 10.1002/ps.1723 |
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| Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1002/ps.1723/full
Last checked: 01/31/2014
Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1002/ps.1723/pdf
Last checked: 01/31/2014
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | McCurdy, James D.;
McElroy, J. Scott;
Kopsell, Dean A.;
Sams, Carl E. |
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| Author Affiliation: | McCurdy, Kopsell, and Sams: Plant Sciences Department, The University of Tennessee, Knoxville, Tennessee; McElroy: Department of Agronomy and Soils, Auburn University, Auburn, Alabama |
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| Title: | Mesotrione control and pigment concentration of large crabgrass (Digitaria sanguinalis) under varying environmental conditions |
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| Section: | Research articles
Other records with the "Research articles" Section
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| Source: | Pest Management Science. Vol. 65, No. 6, June 2009, p. 640-644. |
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| Publishing Information: | London: for the Society of Chemical Industry by John Wiley & Sons |
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| # of Pages: | 5 |
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| Related Web URL: | http://onlinelibrary.wiley.com/doi/10.1002/ps.1723/abstract
Last checked: 01/31/2014
Notes: Abstract only |
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| Keywords: | TIC Keywords: Digitaria sanguinalis; Environmental factors; Herbicide efficacy; Herbicide profile; Mesotrione; Pigments; Weed control
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| Abstract/Contents: | "BACKGROUND: Mesotrione is a carotenoid biosynthesis-inhibiting herbicide currently labeled for crabgrass (Digitaria spp.) control. Mesotrione control of large crabgrass has been reported to vary with temperature and relative humidity; however, the effect of irradiance on mesotrione efficacy has not previously been reported. Likewise, little is known about pigment concentrations of Digitaria spp. The present research investigated the effects of mesotrione on large crabgrass, Digitaria sanguinalis (L.) Scop., control and pigment concentrations under varying irradiance at three temperatures. RESULTS: Mesotrione (0.28 kg ha-1) control of large crabgrass did not differ between temperature levels (18, 26 and 32 °C). Control was similar at tested irradiance levels (600, 1100 and 1600 μmol m-2 s-1). Mesotrione reduced large crabgrass chlorophyll a, chlorophyll b and total carotenoid concentrations, as well as chlorophyll a to b ratios. Treated plant bleaching was highest 7 days after treatment (DAT) but decreased by 21 DAT. Treated plants were less than 10% necrotic 3 and 7 DAT but nearly 35% necrotic 21 DAT. Treated large crabgrass bleaching was highest and photochemical efficiency was lowest 7 DAT. These results indicate that some plant recovery occurs prior to 21 DAT. CONCLUSION: Although mesotrione efficacy has previously been reported to vary according to environmental factors, mesotrione control of large crabgrass did not vary with measured temperature and irradiance levels in this study. On account of crabgrass convalescence, secondary applications of mesotrione may control large crabgrass more effectively when applied prior to 21 DAT." |
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| Language: | English |
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| References: | 28 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McCurdy, J. D., J. S. McElroy, D. A. Kopsell, and C. E. Sams. 2009. Mesotrione control and pigment concentration of large crabgrass (Digitaria sanguinalis) under varying environmental conditions. Pest Manage. Sci. 65(6):p. 640-644. |
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| DOI: 10.1002/ps.1723 |
| Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1002/ps.1723/full
Last checked: 01/31/2014
Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1002/ps.1723/pdf
Last checked: 01/31/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b3606814 |
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