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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1987_vol41.pdf#page=213
Last checked: 07/25/2013
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Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Jagschitz, J. A.;
Sawyer, C. D. |
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| Author Affiliation: | Dept. Plant Sciences, University of Rhode Island, Kingston, RI. |
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| Title: | Effect of herbicides applied during annual grass emergence in turf |
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| Meeting Info.: | Held: January 6-8, 1987, Williamsburg, VA. |
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| Source: | Proceedings of the 1987 Annual Meeting of the Northeastern Weed Science Society. Vol. 41, 1987, p. 213-214. |
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| Publishing Information: | Ithaca, N. Y. : Northeastern Weed Science Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Herbicides; Annual grasses; Emergence; Digitaria ischaemum; Festuca rubra subsp. rubra; Poa pratensis; Lolium perenne; Panicum dichotomiflorum; Disodium methyl arsenate; MSMA; Fenoxaprop-ethyl; Bensulide; DCPA; Siduron; Benfluralin; Tridiphane
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| Abstract/Contents: | "Eight studies were initiated at the time smooth crabgrass [Digitaria ischaemum (Schreb.) Muhl.] had emerged and some would germinate later, to evaluate pre and postemergence herbicides, for the control of crabgrass. The lawns contained red fescue (Festuca rubra L.), Kentucky bluegrass (Poa pratensis L.) and/or perennial ryegrass (Lolium perenne L.). Herbicides were applied to replicated plots between May 24 and June 13 (crabgrass in 0 to 5 leaf stage). Crabgrass germination started in early May and continued through July with most emergence in June. The herbicides, rates and dates are shown in Table 1. Granular (G) herbicides were applied by hand while others were applied as sprays using 50 to 175 gallons of water per acre (GPA). No rain occurred for at least 20 hours and most lawns received rainfall or irrigation by the third day. Two replicated tests in 1986, on a sod-stripped rea, evaluated herbicides for the control of fall panicum (Panicum dichotomiflorum Michx.) at the 1-2 and 1-4 leaf stages. Percent control was based on comparisons between cover in treated plots to that of untreated plots. Turf injury was evaluated throughout the studies. The results from herbicides applied during crabgrass emergence are shown in Table 1. Postemergence herbicides (DSMA, MSMA and fenoxaprop) and preemergence herbicides (bensulide, DCPA and siduron) did not consistantly provide good (80-89%) or excellent (90-100%) crabgrass control. Herbicides applied during weed emergence should have both pre and post activity to be successful. Pendimethalin and prodiamine (pre materials) gave good to excellent control, however, results were form only one trial and further testing is required. Tridiphane, applied in three studies, provided good to excellent crabgrass control and appears to have both pre and post activity. Objectionable red fescue injury was noted in some trials from DSMA, MSMA and tridiphane. Combining post and preemergence herbicides improved crabgrass control. Adding DSMA or MSMA to benefin, bensulide, DCPA, oxadiazon, pendimethalin and siduron resulted in good to excellent control. A second application of DMSA or MSMA (9-16 days later) was usually required. Mixing fenoxaprop with bensulide, DCPA, pendimethalin or prodiamine provided good to excellent control. The .18 lb rate of fenoxaprop was more effective than the .12 lb rate. Data from herbicides applied to fall panixum are presented in Table 1. All materials provided some control with 1 to 2 leaf panicum being more susceptible than 1-4 leaf. Excellent control was provided by oxadiazon, pendimethalin and tridiphane at both leaf staes. Benefin and sifuron gave excellent control of 1 to 2 leaf fall panicum. Bensulide, DCPA and prodiamine provided only partial control. Rooting of Fall panicum was inhibited by bensulide, pendimethalin and siduron." |
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| Language: | English |
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| References: | 0 |
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| Note: | Table
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jagschitz, J. A., and C. D. Sawyer. 1987. Effect of herbicides applied during annual grass emergence in turf. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 41:p. 213-214. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1987_vol41.pdf#page=213
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 |
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