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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2004%20Proceedings-SWSS.pdf#page=142
Last checked: 07/16/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Hans, S.;
Jordan, D.;
Monks, D.;
Spears, J.;
Wilcut, J.;
York, A.;
Corbin, F.;
Sheldon, B. |
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| Author Affiliation: | Department of Crop Science, North Carolina State University, Raleigh |
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| Title: | Influence of fungicides on efficacy of clethodim and sethoxudim in large crabgrass (Digitaria sanguinalis L.) |
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| Section: | Weed management in agronomic crops
Other records with the "Weed management in agronomic crops" Section
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| Meeting Info.: | Memphis, Tennessee: January 26-28, 2004 |
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| Source: | Proceedings: Southern Weed Science Society: 57th Annual Meeting. Vol. 57, 2004, p. 44. |
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| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Clethodim; Digitaria sanguinalis; Fungicide evaluation; Herbicide efficacy; Herbicide evaluation; Herbicide-fungicide combinations; Sethoxydim; Weed control
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| Abstract/Contents: | "Peanut producers apply a wide range of agrichemicals throughout the growing season to control pests and to optimize crop growth and development. Previous research suggests that some commercially available fungicides may reduce efficacy of herbicides. Field experiments were conducted in 2002 and 2003 to evaluate the influence of fungicides on large crabgrass control by clethodim and sethoxydim. Clethodim (0.14 kg ai/ha) and sethoxydim (0.21 kg ai/ha) were applied alone or with azoxystrobin (0.43 kg ai/ha), chlorothalonil (1.26 kg ai/ha), pyraclostrobin (0.16 kg ai/ha), and tebuconazole (0.22 kg ai/ha). Crop oil concentrate (2.4 L/ha) was included with all treatments. Visual estimates of percent large crabgrass control were recorded two weeks after application. Additionally, studies were conducted to determine the role of fungicides on absorption of 14C-clethodim and 14C-sethoxydim into large crabgrass at 2 and 8 hours after application. Ring labelled 14C-clethodim and 14C-sethoxydim were applied to large crabgrass plants in combination with the azoxystrobin, chlorothalonil, pyraclostrobin, and tebuconazole at the rates previously described. Crop oil concentrate was included with all treatments. The treated leaf was subjected to a 1-minute water wash followed by a 1-minute chloroform wash. Treated leaves, the shoot above and the shoot below the treated leaf were oxidized to determine 14C-label distribution. Large crabgrass control by clethodim and sethoxydim was reduced when these herbicides were applied with chlorothalonil, azoxystrobin, and pyraclostrobin. Tebuconazole did not reduce control by either graminicide. Absorption of 14C-clethodim and 14C-sethoxydim were reduced by chlorothalonil. Azoxystrobin reduced absorption of 14C-clethodim but did not affect absorption of 14C-sethoxydim. Tebuconazole and pyraclostrobin did not affect absorption of either graminicide. These data indicate that reduced control of large crabgrass by clethodim and sethoxydim applied with chlorothalonil may be associated with decreased absorption. Although azoxystrobin did not affect absorption of 14C-sethoxydim, less control by this combination was noted in field experiments. Reduced control caused by pyraclostrobin could not be attributed to reduced absorption of herbicides." |
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| Language: | English |
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| References: | 0 |
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| Note: | "The changing world of weed science"
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hans, S., D. Jordan, D. Monks, J. Spears, J. Wilcut, A. York, et al. 2004. Influence of fungicides on efficacy of clethodim and sethoxudim in large crabgrass (Digitaria sanguinalis L.). South. Weed Sci. Soc. Proc. 57:p. 44. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2004%20Proceedings-SWSS.pdf#page=142
Last checked: 07/16/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: b2207931 |
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