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| Web URL(s): | https://listings.lib.msu.edu/iowat/1988.pdf#page=59
Last checked: 01/12/2017
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Agnew, M. L.;
Christians, N. E. |
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| Author Affiliation: | Agnew: Assistant Professor, and Christians: Professor, Iowa State University |
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| Title: | Preemergence Herbicide Timing Control Studies - 1987 |
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| Source: | 1988 Iowa Turfgrass Research Report. 1988, p. 54-55. |
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| Publishing Information: | Ames, Iowa: Iowa State University Extension |
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| # of Pages: | 2 |
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| Series: | FG-454 |
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| Keywords: | TIC Keywords: Preemergence herbicides; Bensulide; Benfluralin; DCPA; Pendimethalin; Napropamide
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| Abstract/Contents: | The purpose of this study was to investigate the effectiveness of five preemergence herbicides when applied on six dates ranging from late fall of 1985 to late spring of 1986. The herbicides used were benefin, Bensulide/Devrinol, Dacthal, and Pendimethalin. The herbicides were applied at rates of 2 lb ai/A (Benefin), 7.5 lb ai/A (Bensulide), 7.5 lb ai/A - 1.5 lb ai/A (Bensulide/Devrinol), 10.5 lb ai/A (Dacthal), and 1.5 lb ai/A (Pendimethalin). Application dates were November 8, 1985, March 6, 20, April 4, 18, and May 6, 1986. On November 8, an additional treatment of Pendimethalin at a rate of 3.0 lb ai/A was added. The area chosen for the study was a non-irrigated Kentucky bluegrass rough at Homewood Golf of Pendimethalin at a rate of 3.0 lb ai/A was added. The environmental conditions in 1987 can be classified as a dry spring and wet summer. Perfect conditions for late crabgrass germination were present. On July 17 and September 8, 1987, the number of crabgrass plants per plot were recorded and the percent crabgrass control was calculated. Crabgrass control of 90 percent was considered good control. Bensulide, Bensulide/Devrinol, and Dacthal consistently gave 90 percent or better crabgrass control. All treatments of Balan and all but the May treatment of Pendimethalin provided less than 90 percent control of crabgrass. The poor crabgrass control by Balan and Pendimethalin prior to May 6 demonstrates the need for a second application for crabgrass control when applied early. |
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| Language: | English |
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| References: | 0 |
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| Note: | "July, 1988"
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Agnew, M. L., and N. E. Christians. 1988. Preemergence Herbicide Timing Control Studies - 1987. Iowa Turfgrass Res. Rep. p. 54-55. |
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| Web URL(s):
https://listings.lib.msu.edu/iowat/1988.pdf#page=59
Last checked: 01/12/2017
Requires: PDF Reader |
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MSU catalog number: SB 433 .A1 I55 |
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