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| Web URL(s): | https://listings.lib.msu.edu/iowat/1989.pdf#page=47
Last checked: 01/10/2017
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Burt, M. G.;
Christians, N. E. |
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| Title: | Postemergence Annual Grass Control Study - 1988 |
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| Source: | 1989 Iowa Turfgrass Research Report. July 1989, p. 43-44. |
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| Publishing Information: | Ames, Iowa: Iowa State University |
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| Keywords: | TIC Keywords: Crabgrass control; Postemergence herbicides; Annual grass weeds; Poa pratensis; Digitaria sanguinalis; Phytotoxicity; Application rates; Drought; Dithiopyr
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| Abstract/Contents: | Assessed several treatments for postemergent control of crabgrass in 1988. The study was located on a stand of Park Kentucky bluegrass. The soil on the site is a Nicollet (fine-loamy, mixed mesic, Aquic Hapludal) with a pH of 7.2, 15 lb/A phosphorus, 120 lb/A potassium, and 2.3% organic matter. The site was mowed to 1 inch and was overseeded with crabgrass at a rate of 0.5 pounds per 1000 sq. ft. on April 28. At time of treatment application, the area had a uniform stand of crabgrass at the 3-leaf to 1-tiller stage. Treatments included American Hoechst's Acclaim in the EC and EW formulations, and an experimental - HOE 360. Acclaim 1EC also was used in combination with Turflon amine, Breakthru, and dicamba. Other treatments included a Monsanto experimental Mon 15151 alone and in combination with Acclaim 1EC, and the BASF experimental BAS 51400H alone and in combination with Acclaim 1EC. The herbicides were applied on June 16. All treatments were applied in the equivalent of 3 gal water/1000ft2 with the exception of the Acclaim EC, Acclaim EW, HOE 360, and Acclaim in combination with Breakthru, Turflon amine, and dicamba, which were applied in the equivalent of 130 gal water/A. No phytotoxicity was observed on any of the plots during the trial. The crabgrass count was taken on August 1, 1988. A table provides treatments, application rates and percent crabgrass control. The only treatments providing adequate or near adequate crabgrass control were the experimental from BASF at the high rate alone and in combination with Acclaim, and the Mon-15151 at both rates and in combination with Acclaim. The less than favorable summer moisture levels resulted in poor postemergence crabgrass control by many of the products in this study. Acclaim in both formulations, at all rates, and in combination with the broadleaf herbicides provided little crabgrass control. The experimental HOE 360 at each rate, and the BAS 51400H at the lowest rate also provided little crabgrass control. The crabgrass control for the MON 15151 improved as the chemical rate increased, but inadequate crabgrass control was obtained at all rates up to 0.75 lb a.i./A. |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Burt, M. G., and N. E. Christians. 1989. Postemergence Annual Grass Control Study - 1988. Iowa Turfgrass Res. Rep. p. 43-44. |
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| Web URL(s):
https://listings.lib.msu.edu/iowat/1989.pdf#page=47
Last checked: 01/10/2017
Requires: PDF Reader |
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MSU catalog number: SB 433 .A1 I55 |
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