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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=262
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Walker, R. H.;
Belcher, J. L. |
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| Author Affiliation: | Auburn University, AL |
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| Title: | Annual bluegrass control with amicarbazone in perennial ryegrass overseed |
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| Section: | Turf and ornamental weed control
Other records with the "Turf and ornamental weed control" Section
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| Meeting Info.: | Orlando, Florida: February 9-12, 2009 |
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| Source: | 2009 Proceedings, Southern Weed Science Society. Vol. 62, 2009, p. 192. |
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| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Amicarbazone; Application timing; Cultivar evaluation; Cynodon dactylon x Cynodon transvaalensis; Flucarbazone; Herbicide evaluation; Herbicide injury; Lolium perenne; Poa annua control; Research; Tank mix
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| Cultivar Names: | Integra; Tifway |
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| Abstract/Contents: | "Annual bluegrass (POAAN) is one of the most widespread winter weeds in turf, especially when hybrid bermudagrass is overseeded in the fall with cool-season species such as perennial ryegrass (LOLPE). Research objectives were to determine potential for amicarbazone (triazolinone) and flucarbazone (triazolone) to control POAAN in overseeded LOLPE, and effects on spring transition of hybrid bermudagrass. 'Integra' LOLPE was overseeded mid-October 2007 on areas that historically have high POAAN density. Each area was maintained as a golf course fairway. Proper fertilization, mowing, irrigation and pest control produced a high quality LOLPE turf. Experiment 1. Herbicide treatments evaluated were: amicarbazone at 0.26 and 0.52 kg ai/ha; flucarbazone at 0.03 kg ai/ha; amicarbazone + flucarbazone tank mixes; and trifloxysulfuron 0.02 kg ai/ha. Treatments were applied 15 February, 2008 to POAAN that was in full flower. Herbicides were applied with a backpack sprayer calibrated to deliver 280 L/ha. Non-ionic surfactant was included at 0.25% v/v. Individual plot size was 1.2 by 3.6 m and there were four replications. Percent POAAN control, LOLPE injury, and bermudagrass transition date were collected over time. LOLPE tolerance o amicarbazone at 0.26 kg/ha was excellent. Doubling this rate produced injury (canopy browning) greater than 20% when evaluated 39 DA-A (days after application). Flucarbazone caused only slight injury to the LOLPE. However, tank mixtures of amicarbazone and flucarbazone produced unacceptable injury. As expected, trifloxysulfuron caused unacceptbale injury to the LOLPE. POAAN control reached a maximum of 80% 61 DA-A with the 0.26 kg/ha rate. Doubling this rate provided 96 and 99% control 39 and 61 DA-A, respectively. Flucarbazone alone was not effective for POAAN control. Tank mixtures of amicarbazone + flucarbazone appeared to be antagonistic compared to amicarbazone alone. Amicarbazone provided better POAAN control than trifloxysulfuron. Tifway bermudagrass transition was not adversely affected by amicarbazone or flucarbazone. Experiment 2. Treatments included single applications of amicarbazone at 0.13, 0.26 and 0.52 kg/ha and sequential applications of 0.13 + 0.13 and 0.26 + 0.26 kg /ha. First application was 25 March and the sequential was 17 April, 2008. Experiment particulars and herbicide application and data collections were the same as previously described. LOLPE was tolerant of all rates of amicarbazone including the 0.52 kg/ha rate which at times was unacceptable in Experiment 1. A single application of 0.13 kg/ha provided only 35% control. A sequential at the same rate increased control to 89%. Amicarbazone at 0.26 kg/ha provided 79% control which increased to 99% when a sequential at this rate followed. A single rate of 0.52 kg/ha provided 99% POAAN control. Amicarbazone applied to LOLPE sooner than 20 weeks after emergence may produce unacceptable injury (on going research)." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Walker, R. H., and J. L. Belcher. 2009. Annual bluegrass control with amicarbazone in perennial ryegrass overseed. South. Weed Sci. Soc. Proc. 62:p. 192. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=262
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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