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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Brown, S. M.;
Chandler, J. M.;
Bridges, D. C. |
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| Author Affiliation: | Texas Agric. Exp. Station, College Station, TX. |
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| Title: | Response of Bermudagrass Biotypes to Selected Herbicides |
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| Meeting Info.: | Held: January 14-16, 1985, Houston, TX. |
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| Source: | Proceedings of the 38th Southern Weed Science Society. Vol. 38, 1985, p. 459. |
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| Publishing Information: | Southern Weed Science Society |
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| Keywords: | TIC Keywords: Cynodon dactylon; Responses; Biotypes; Herbicides; Glyphosate; Sulfosate; Sethoxydim; Fluazifop-butyl; Haloxyfop; Quizalofop; Herbicide interaction; Herbicide rates
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| Trade Names: | Assure |
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| Abstract/Contents: | "In the past several years, numerous investigators have evaluated postemergence herbicides for bermudagrass [Cynodon dactylon (L.) Pers.] control in agricultural crops. Reports from Mississippi indicate varying response of bermudagrass biotypes collected in the Delta region to postemergence compounds. Field research was conducted in 1983 and 1984 in Texas to examine possible herbicide by biotype interactions for bermudagrass collected in Texas. Bermudagrass plant material from seven locations in Texas was established in the spring of 1982 at the Texas A&M University Research Farm near College Station. Biotypes were maintained in separate blocks in a field nursery through 1984 and were designated Biotype A through Biotype G for bermudagrass obtained from College Station, Lubbock, Fort Stockton, Waslaco, Mumford, Corpus Christi and Paris, TX, respectively. In the late spring of 1983 and 1984, bermudagrass plugs were taken from the biotype nursery using a golf green cup cutter. Plugs were established 1 m apart in 1 m bedded rows. The area was furrow irrigated to insure grass survival and growth. Herbicides (and rates) included glyphosate and SC 0224 (0.6, 1.1 kg ai/ha); sethoxydim (0.6, 1l1 kg ai/ha); fluazifop-butyl (0.3, 0l6 kg ai/ha); haloxyfop-methyl (0.14, 0.28 kg ai/ha); and DPXY 6202 (0.7, 0.14 kg ai/ha). Herbicides were applied across biotypes in a strip block design. There were three replications. Visual ratings of bermudagrass injruy were made 3 and 5 weeks after herbicide application. Glyphosate and SC 0224 were more effective on Biotype C and less effective on Biotype B than on other biotypes. Bermudagrass control with these compounds at the lower rates was poor. Sethoxydim and fluazifop-butyl at the lower rates were less effective on Biotype A than on other biotypes. At the higher rates control ratings with these compounds were quite similar and averaged 88%. Haloxyfop-methyl and DPXY 6202 was more effective on Biotype E than other biotypes. Results document the occurrence of herbicide by biotype interactions, i.e. that a particular biotype may be more or less sensitive to a given herbicide than other biotypes and, conversely, that performance of a specific herbicide on a particular biotype may not be indicative of performance on other biotypes. Interactions are not predictable by physical appearance of biotypes." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Brown, S. M., J. M. Chandler, and D. C. Bridges. 1985. Response of Bermudagrass Biotypes to Selected Herbicides. Proc. Meet. South. Weed Sci. Soc. 38:p. 459. |
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MSU catalog number: SB 611 .S6 v.38 |
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