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| Web URL(s): | http://www.agry.purdue.edu/turf/report/2000/2000%20page%2058.pdf
Last checked: 07/2001
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Throssell, Clark;
Weisenberger, Dan |
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| Author Affiliation: | Throssell: Turfgrass Teaching, Research and Extension, Department of Agronomy; Weisenberger: Research Agronomist, Department of Agronomy, Purdue University |
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| Title: | Poa trivialis control with several herbicide application programs |
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| Section: | Integrated pest management
Other records with the "Integrated pest management" Section
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| Source: | 2000 Annual Report - Purdue University Turfgrass Science Program. 2000, p. 58-59. |
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| Publishing Information: | [West Lafayette, IN]: Purdue University |
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| # of Pages: | 2 |
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| Series: | B-804 |
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| Keywords: | TIC Keywords: Poa trivialis; Weed control; Agrostis stolonifera; Herbicides; Application timing; Phytotoxicity; Percent living ground cover; Fenoxaprop-ethyl; Ethofumesate; Application rates
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| Abstract/Contents: | Presents a study "to determine the efficacy of two herbicides and several application timings for control of Poa trivialis." Results include "phytotoxicity to Poa trivialis was rated on 5, 10, 15, and 22 June. Several herbicide treatments caused phytotoxicity to Poa trivialis that was significantly different than phytotoxicity to the untreated check. Acclaim Extra applied at 20 fl ox/A and higher caused phytotoxicity different from the untreated check on 10 and 15 June. On the 22 June rating date phytotoxicity to Poa trivialis treated with Acclaim Extra at all rates had become much less severe and damage was considered acceptable. Prograss at all rates caused phytotoxicity to Poa trivialis that was significantly different than phytotoxicity in the untreated check on some or all rating dates. Prograss applied at 6.0 and 9.0 lbs ai/A caused severe phytotoxicity to Poa trivialis on 15 and 22 June. Percent cover of Poa trivialis on 10 June was significantly lower than the untreated check in plots treated with Acclaim Extra at 20.0, 28.0, and 39.0 fl oz A [fl oz/A] On 15 June plots treated with Acclaim Extra at 20.0, 28.0, and 39.0 fl oz/A and Prograss at 6.0 and 9.0 lbs ai/A had significantly less Poa trivialis cover than the untreated check. By the 30 June and 12 July rating dates only plots treated with Prograss at 6.0 and 9.0 lbs ai/A had significantly less cover by Poa trivialis than the untreated check. By the 12 July rating date some recovery of Poa trivialis was observed in plots treated with Prograss at 6.0 and 9.0 lbs ai/A. While Acclaim Extra at 20.0, 28.0, and 39.0 fl oz/A caused phytotoxicity to Poa trivialis and caused some thinning of the turf, recovery occurred fairly rapidly and it appears Acclaim Extra is not an effective means of Poa trivialis control. Prograss applied at 6.0 and 9.0 lbs ai/A caused severe thinning of Poa trivialis but complete control was not achieved and recovery of Poa trivialis was observed toward the end of the experiment. This causes doubt as to whether Prograss will provide acceptable Poa trivialis control." |
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| Language: | English |
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| References: | 0 |
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| Note: | "Not for publication without permission"
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Throssell, C., and D. Weisenberger. 2000. Poa trivialis control with several herbicide application programs. Annu. Rep. Purdue Univ. Turfgrass Sci. Progr. p. 58-59. |
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| Web URL(s):
http://www.agry.purdue.edu/turf/report/2000/2000%20page%2058.pdf
Last checked: 07/2001
Requires: PDF Reader |
| 
MSU catalog number: SB 433.16 .I6 T87 |
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