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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/69/3/AJ0690030396
Last checked: 12/08/2016
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| Publication Type:
| Refereed |
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| Author(s): | Johnson, B. J. |
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| Author Affiliation: | Associate Professor, Agronomy, College of Agriculture Experiment Station, Georgia Station, University of Georgia, Experiment, Georgia |
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| Title: | Sequential DCPA treatments for weed control in turfgrasses |
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| Source: | Agronomy Journal. Vol. 69, No. 3, May/June 1977, p. 396-398. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| # of Pages: | 3 |
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| Keywords: | TIC Keywords: DCPA; Poa annua control; Crabgrass control; Application rates; Control methods; Herbicide evaluation; Temperatures; Preemergence weed control; Application timing
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| Abstract/Contents: | "In the southeastern USA, herbicides have not generally given consistent preemergence control of large crabgrass [Digitaria sanguinalis (L.) Scop.] and annual bluegrass (Poa annua L.). DCPA (dimethyl tetrachloroterephthalate) was applied as single and repeated treatments over a 3-year period for large crabgrass control at Griffin and Blairsville, Georgia, and for annual bluegrass control at Griffin. The soil types were Cecil sandy loam (Typic Hapludult) or sandy clay loam at Griffin and Hatboro loam (Typic Fluvaquents) or sandy loam at Blairsville. None of the DCPA treatments controlled large crabgrass or annual bluegrass consistently at the rates included in these studies. Treating plots with DCPA at 11.2 kg/ha in both March and June gave the greatest control in 2 or 3 years at each location. A significant multiple correlation between temperature prior to treatment and weed control ratings indicated that poor control of large crabgrass was related to germination of crabgrass prior to treatment. High temperatures that induced germination of crabgrass during 2 weeks prior to time of treatment resulted in less control than in years with lower temperatures. This emphasizes the need for early application of DCPA in Georgia." |
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| Language: | English |
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| References: | 13 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Johnson, B. J. 1977. Sequential DCPA treatments for weed control in turfgrasses. Agron. J. 69(3):p. 396-398. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/69/3/AJ0690030396
Last checked: 12/08/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2212646a |
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