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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2010 Proceedings-SWSS.pdf#page=265
Last checked: 08/01/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Doroh, M. C.;
McElroy, J. S.;
Walker, R. H.;
Guertal, E. A. |
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| Author Affiliation: | Auburn University, Auburn, AL |
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| Title: | Conversion of bermudagrass fairways to zoysiagrass utilizing glyphosate, dazomet, and EPTC |
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| Section: | Graduate student paper contest
Other records with the "Graduate student paper contest" Section
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| Meeting Info.: | Little Rock, Arkansas: January 25-27, 2010 |
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| Source: | 2010 Proceedings, Southern Weed Science Society. Vol. 63, 2010, p. 215. |
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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: Application frequency; Cynodon dactylon x Cynodon transvaalensis; Dazomet; EPTC; Glyphosate; Golf fairway renovation; Herbicide evaluation; Percent living ground cover; Pest control; Research; Siduron; Turf renovation; Zoysia matrella
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| Cultivar Names: | Tifway; Zorro |
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| Abstract/Contents: | "Renovating bermudagrass fairways to zoysiagrass, a more desirable species, is increasingly popular among golf course superintendents. However, this is a difficult task since the same attributes that make bermudagrass a popular turfgrass also make it a difficult-to-control perennial weed during turfgrass renovation. A successful turfgrass renovation requires that the existing grass species be effectively controlled to permit the establishment of a monoculture. Traditionally, nonselective herbicides have been utilized to kill the existing turf and subsequently replant the desired species; however, successful control is not always achieved. EPTC is a thiocarbamate herbicide once widely used in corn (Zea mays L.) infested with perennial grasses. Dazomet is a granular soil fumigant currently being used in a variety of agricultural sectors to control fungi, nematodes, bacteria, and weed seeds. Previous field research using dazomet has yielded variable control of coastal bermudagrass. At present, no research results have been published on the efficacy of EPTC and dazomet for the control of hybrid bermudagrasses prior to turfgrass renovation. Therefore, the objective of this research was to evaluate integrated practices for the fairway conversion of 'Tifway' bermudagrass (Cynodon dactylon (L.) Pers. ^D^#X C. transvaalensis Burtt-Davy) to 'Zorro' zoysiagrass [Zoysia matrella (L.) Merr.]. Field studies were initiated on May 9, 2008 and May 8, 2009. Soil was a Marvyn sandy loam (fine-loamy, kaolinitic, thermic Typic Kanhapludult), pH 6.0. The experimental design was a randomized complete block (r = 4) with a plot size of 1.5 by 3.0 meters. Herbicide treatments were applied in 280 L H2O ha-1 with a CO2 pressurized boom sprayer. Dazomet treatments were applied with a 0.9 m drop spreader. Treatments included glyphosate (4.48 kg ha-1); EPTC (7.84 kg ha-1 ); dazomet (388 kg ha-1 ); siduron (13.4 kg ha-1 ); glyphosate plus ETPC (4.48 + 7.84 kg ha-1 ); glyphosate plus dazomet (4.48 + 338 kg ha-1 ); EPTC plus siduron (7.84 + 13.4 kg ha-1 ); dazomet plus siduron (388 + 13.4 kg ha-1 ); and a nontreated control. Glyphosate applications were made 5 weeks prior to establishment (WPE); dazomet and EPTC were made 3 WPE; and siduron was applied at establishment. 'Zorro' zoysiagrass was established in June 2008 and 2009 using a mixture of rhizomes and stolons at a rate of 10 bushels 1000 ft-1. Percentage ground cover via line transect counts were taken at 5, 10, and 15 weeks after establishment (WAE). Percentage ground cover was determined in each plot by placing a dowel rod (122 cm) randomly across the plot twice. The dowel rod had twenty-five evenly spaced marks. The presence of any part of a zoysiagrass or bermudagrass plant under an intersection of an increment was recorded as a hit. The number of hits for each count was converted to percentage ground cover on a plot mean basis. Percentage ground cover data were analyzed using mixed models methodology as implemented in SAS® PROC GLIMMIX (SAS Statistical Software. v. 9.1. Cary, NC). The arcsine squareroot transformation resulted in homogenous variances among treatment groups. Least square treatment means were separated utilizing 95% confidence intervals. Pairwise contrasts were utilized when making preplanned comparisons Bermudagrass and zoysiagrass cover data discussed herein were taken 15 WAE. Results from field studies were consistent between 2008 and 2009. Glyphosate + dazomet, glyphosate + EPTC, dazomet + siduron, and EPTC + siduron treatments controlled 'Tifway' bermudagrass effectively, resulting in <=12% groundcover. While the four combination treatments controlled bermudagrass effectively, none of the individual treatments provided acceptable bermudagrass control. EPTC and dazomet controlled bermudagrass more effectively when integrated with glyphosate or siduron. There were no significant differences in bermudagrass cover between the EPTC combinations with glyphosate or siduron and dazomet applied with glyphosate or siduron. Comparing EPTC- and dazomet-alone, EPTC yielded significantly less bermudagrass cover (32%) than dazomet (71%). Zoysiagrass cover was greater in treatments that yielded lower bermudagrass cover. EPTC and dazomet integrated with glyphosate or siduron yielded similar zoysiagrass cover (>87%). In the individual dazomet, glyphosate, and siduron treatments, a continual decrease in zoysiagrass cover was observed over the duration of the study. Data from these studies indicate that EPTC and dazomet integrated with glyphosate or siduron effectively control hybrid bermudagrass during turfgrass renovation." |
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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):
Doroh, M. C., J. S. McElroy, R. H. Walker, and E. A. Guertal. 2010. Conversion of bermudagrass fairways to zoysiagrass utilizing glyphosate, dazomet, and EPTC. South. Weed Sci. Soc. Proc. 63:p. 215. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2010 Proceedings-SWSS.pdf#page=265
Last checked: 08/01/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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