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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2011 Proceedings-SWSS.pdf#page=390
Last checked: 08/06/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Hephner, A. J.;
Cooper, T.;
Beck, L.;
Rotramel, J. B.;
Henry, G. M. |
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| Author Affiliation: | Texas Tech University, Lubbock |
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| Title: | Competitive response of khakiweed to mowing height |
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| Section: | Posters: Weed management in turf
Other records with the "Posters: Weed management in turf" Section
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| Meeting Info.: | San Juan, Puerto Rico: January 24-26, 2011 |
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| Source: | 2011 Proceedings, Southern Weed Science Society. Vol. 64, 2011, p. 282. |
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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: Alternanthera pungens; Cultural control; Cynodon dactylon; Mowing height; Salt tolerance
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| Abstract/Contents: | "Khakiweed (Alternathera pungens HBK.) is one of the most troublesome weed species in managed turfgrass, especially in the arid and semi-arid regions of the southern United States. Tolerance to salinity and soil compaction has led to the increased occurrence of khakiweed in home lawns, golf courses, and athletic fields. Currently, only two postemergence herbicides are labeled for the control of khakiweed in bermudagrass turf. Anecdotal evidence suggests that khakiweed pressure is often greater when managed at higher mowing heights (> 5.0 cm). Therefore, examination of the growth and spread of khakiweed under various mowing heights may provide clues to improved cultural control tactics. Field experiments were conducted at the Quaker Research Farm in Lubbock, TX during the summer of 2010 to observe the competitive response of khakiweed to different mowing heights. Cup cuttings (10.2 cm) of khakiweed were removed from naturally occurring populations located in the rough at Meadowbrook Golf Course in Lubbock, TX. Plugs were transplanted into bare ground on the trial site on June 14, 2010. Four cores were transplanted (18.3 cm apart) down the center of each plot measuring 1.5 x 3.0 m. Plants were arranged in a randomized complete block design with four replications. Cores were allowed to acclimate for two weeks to encourage rooting prior to the initiation of the trial. Mowing treatments were initiated on June 30, 2010. All treatments were mowed three times a week and consisted of three mowing regimes: 1.27, 2.54, and 5.08 cm. A non-mowed check was included for comparison. Plots maintained at 1.27 cm were mowed with a walk-behind reel mower, while plots maintained at 2.54 and 5.08 cm were mowed with a walk-behind rotary mower. Irrigation was supplied daily with an automated irrigation system to deliver 5.0 cm/week. Plant diameter measurements were recorded bi-monthly for the duration of the trial. Two diameter measurements were taken perpendicular to each other (the first measurement was taken in the largest diameter) and averaged to obtain the reported diameter of a plant at each sampling time. Data were subjected to analysis of variance (ANOVA) and means were separated using Fisher's Protected LSD at the 0.5 significance level. Regressions were used to explain the relationship of measured responses over time. Khakiweed plant diameters were similar (55.75 to 61.87 cm) 4 WAIT regardless of mowing height. Differences in plant diameter were more evident 12 WAIT. Non-mowed plants exhibited diameters of 80.8 cm 12 WAIT. Khakiweed plants maintained at 5.08 and 2.54 cm exhibited diameters of 71.73 and 66.7 cm, respectively; while plants maintained at 1.27 cm exhibited diameters of 57.74 cm 12 WAIT." |
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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):
Hephner, A. J., T. Cooper, L. Beck, J. B. Rotramel, and G. M. Henry. 2011. Competitive response of khakiweed to mowing height. South. Weed Sci. Soc. Proc. 64:p. 282. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2011 Proceedings-SWSS.pdf#page=390
Last checked: 08/06/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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