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| Web URL(s): | http://archive.lib.msu.edu/tic/mitgc/article/198974.pdf
Last checked: 02/27/2009
Requires: PDF Reader |
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| Publication Type:
| Proceedings |
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| Author(s): | Branham, B. E. |
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| Author Affiliation: | Dept. of Crop and Soil Science, Michigan State University |
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| Title: | 1988-89 crabgrass update |
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| Meeting Info.: | East Lansing, MI: January 16-18, 1989 |
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| Source: | Proceedings of the 59th Annual Michigan Turfgrass Conference. Vol. 18, 1989, p. 74-77. |
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| Publishing Information: | East Lansing, MI: Michigan State University |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Crabgrass control; Herbicide evaluation; Digitaria sanguinalis; Postemergence herbicides; Preemergence herbicides
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| Abstract/Contents: | When controlling crabgrass (Digitaria sanguinalis) there are three approaches to consider. First, the most common, is to apply a preemergence herbicide only. This approach failed miserably in 1988. A variant to the pre only application is to split the applications. This approach calls for the first application in early spring at the label rate, followed by a second application 45-60 days later at 1/2 of the label rate. This would have resulted in good crabgrass control in 1988. Second is to use both a preemergence and a postemergence herbicide. This approach calls for delaying the initial preemergence herbicide application until sometime in late May or early June when the first flush of crabgrass has germinated and then applying both a preemergence and a postemergence herbicide. A single application of fenoxaprop (Acclaim; a postemergence herbicide) did not provide season long control because it did not control the later germinating crabgrass. The third is to use just a post-emergence herbicide. This may not be the most economic approach on turf heavily infested with crabgrass. However, on sites with little infestation, the manager could spot treat at less cost than a blanket application. This approach also would have been more cost effective if used in 1988. Fenoxaprop (Acclaim) is strongly antagonistic with several common broadleaf herbicides that contain 2,4-D. Dicamba, MCPP, and chlorflurenol show little or no antagonism. Prodiamine (Barricade, by Sandoz C.P.C.) is a dinitroaniline, similar to pendimethalin and benefin, is an excellent new herbicide expected to give season long control of crabgrass with a single application at 0.5 to 0.75 lb AI/A. Monsanto's Dimension is a promising new herbicide with both preemergence and postemergence effects. While a weed like crabgrass can never be eradicated, research will yield new herbicides that can be expected to provide increased control. Table 1 lists 14 treatments and the control, application rates, and the percent crabgrass groundcover observations on seven dates 2 weeks apart. Table 2 lists 49 treatments and the control, applications rates, and the percent digitaria control observations on three dates 2 weeks apart. Table 3 lists preemergence grass herbicides by their common names and trade names. |
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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):
Branham, B. E. 1989. 1988-89 crabgrass update. p. 74-77. In Proceedings of the 59th Annual Michigan Turfgrass Conference. East Lansing, MI: January 16-18, 1989. East Lansing, MI: Michigan State University. |
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| Web URL(s):
http://archive.lib.msu.edu/tic/mitgc/article/198974.pdf
Last checked: 02/27/2009
Requires: PDF Reader |
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MSU catalog number: SB 433 .A1 M47 |
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