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| DOI: | 10.1614/WT-D-11-00160.1 |
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| Web URL(s): | http://www.bioone.org/doi/pdf/10.1614/WT-D-11-00160.1
Last checked: 07/22/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access website
http://www.bioone.org/doi/full/10.1614/WT-D-11-00160.1
Last checked: 07/22/2014
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Hoyle, Jared A.;
McElroy, J. Scott |
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| Author Affiliation: | Hoyle: Graduate Research Assistant; McElroy: Associate Professor, Department of Agronomy and Soils, Auburn University, Auburn, Alabama |
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| Title: | Relationship between temperature and heat duration on large crabgrass (Digitaria sanguinalis), Virginia buttonweed (Diodia virginiana), and cock's-comb kyllinga (Kyllinga squamulata) seed mortality |
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| Section: | Weed biology and competition
Other records with the "Weed biology and competition" Section
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| Source: | Weed Technology. Vol. 26, No. 4, October-December 2012, p. 800-806. |
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| Publishing Information: | Champaign, Illinois: Weed Science Society of America |
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| # of Pages: | 7 |
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| Related Web URL: | http://www.bioone.org/doi/abs/10.1614/WT-D-11-00160.1
Last checked: 07/22/2014
Notes: Abstract only |
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| Keywords: | TIC Keywords: Control methods; Digitaria sanguinalis; Diodia virginiana; Kyllinga squamulata; Thermal weed control
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| Abstract/Contents: | "Thermal heat has been utilized for nonselective weed control methods. These methods are highly variable in application and efficacy. One effective weed-seed-control determining factor is achieving the thermal death point of targeted weed seeds. The thermal death point varies by weed species, temperature, and exposure time. Our objective was to determine the thermal death point of large crabgrass, cock's-comb kyllinga, and Virginia buttonweed at short thermal exposure periods. Studies conducted utilized 5 and 20 s exposure periods for incremental range, 60 to 250 C temperatures. Sigmoid regression curves were used to predict weed seed mortality by temperature and exposure time. A significant interaction between exposure period and temperature occurred for each weed species. Weed species increased in susceptibility to 20 s thermal heat as follows: Virginia buttonweed < cock's-comb kyllinga < large crabgrass. Increasing thermal exposure time from 5 to 20 s reduced thermal temperature by 21 C to achieve 50% mortality for large crabgrass and by 10 C for cock's-comb kyllinga. Virginia buttonweed achieved 50% mortality at 99 C for 5 and 20 s exposure periods. These data indicate that at least 50% weed seed mortality can be achieved at 99 and 103 C for 20 and 5 s exposure periods, respectively, for these weed species." |
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| Language: | English |
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| References: | 66 |
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| Note: | Abstract also appears in Spanish
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hoyle, J. A., and J. S. McElroy. 2012. Relationship between temperature and heat duration on large crabgrass (Digitaria sanguinalis), Virginia buttonweed (Diodia virginiana), and cock's-comb kyllinga (Kyllinga squamulata) seed mortality. Weed Technol. 26(4):p. 800-806. |
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| DOI: 10.1614/WT-D-11-00160.1 |
| Web URL(s):
http://www.bioone.org/doi/pdf/10.1614/WT-D-11-00160.1
Last checked: 07/22/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access website
http://www.bioone.org/doi/full/10.1614/WT-D-11-00160.1
Last checked: 07/22/2014
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2174615a |
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