Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-23T07:37:55.388Z Has data issue: false hasContentIssue false
  • English
  • Français

Application Timing Affects Bermudagrass Suppression with Mixtures of Fluazifop and Triclopyr

Published online by Cambridge University Press:  20 January 2017

J. T. Brosnan ,
G. K. Breeden ,
M. T. Elmore  and
J. M. Zidek
J. T. Brosnan*
Affiliation:
University of Tennessee, 252 Ellington Plant Science Building, 2431 Joe Johnson Drive, Knoxville, TN 37996
G. K. Breeden
Affiliation:
University of Tennessee, 252 Ellington Plant Science Building, 2431 Joe Johnson Drive, Knoxville, TN 37996
M. T. Elmore
Affiliation:
University of Tennessee, 252 Ellington Plant Science Building, 2431 Joe Johnson Drive, Knoxville, TN 37996
J. M. Zidek
Affiliation:
ZedX Inc., 369 Rolling Ridge Drive, Bellefonte, PA 16823
*
Corresponding author's E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

Bermudagrass is a troublesome weed of zoysiagrass golf-course fairways. Field research was conducted in 2009 and 2010 evaluating bermudagrass suppression with applications of fluazifop plus triclopyr at various timings. Three rates of fluazifop (0.10, 0.21, and 0.32 kg ai ha−1) were applied with triclopyr (1.12 kg ae ha−1) once six thresholds of growing-degree-day accumulation (GDD10C) had been reached: 200, 450, 825, 1,275, 1,775, and 2,250 GDD10C. Yearly accumulated GDD10C values were calculated with a base temperature of 10 C beginning on 1 January. Applications at 200 and 2,250 GDD10C suppressed bermudagrass ≥ 90% at 5 WAT each year. Increased rates of fluazifop did not provide additional bermudagrass suppression at these timings. Cooling accumulation models may be needed to time fall applications, as the 1,775 GDD10C timing in 2009 provided similar bermudagrass suppression to the 2,250 GDD10C timing in 2010. Late-spring and midsummer applications at 450 GDD10C, 825 GDD10C, and 1,275 GDD10C only suppressed bermudagrass 4 to 16% at 6 wk after treatment (WAT) in 2009 and 0 to 57% at 6 WAT in 2010. Zoysiagrass injury measured < 25% for all timings and decreased to 0 to 7% by 5 WAT each year. Future studies should evaluate bermudagrass suppression with other herbicides with the use of growing-degree-day and cooling accumulation models.

Cynodon dactylon es una maleza problemática en campos de golf con la grama Zoysia japonica. Se realizó una investigación de campo en 2009 y 2010 para evaluar la supresión de Cynodon con aplicaciones de fluazifop más triclopyr en varios tiempos. Tres dosis de fluazifop (0.10, 0.21 y 0.32 kg ha−1) se aplicaron con triclopyr (1.12 kg ae ha−1), una vez que se alcanzaron seis umbrales de grados de crecimiento acumulado por día (GDD10C): 200, 450, 825, 1275, 1775 y 2250 GDD10C. Los valores anuales acumulados GDD10C se calcularon usando una temperatura base de 10 C empezando el 1° de enero. Aplicaciones a los 200 y 2250 GDD10C suprimieron Cynodon ≥ 90% a las 5 semanas después del tratamiento cada año. Un incremento en las dosis de fluazifop no proporcionó supresión adicional de Cynodon en estos tiempos de aplicación. Los modelos de enfriamiento acumulativo pueden ser necesarios para programar las aplicaciones de otoño, ya que el tiempo de aplicación a los 1775 GDD10C en 2009 proporcionó supresión de Cynodon similar al tiempo de aplicación a los 2250 GDD10C en 2010. Las aplicaciones tardías en la primavera y a medio verano a los 450 GDD10C, 825 GDD10C y 1725 GDD10C solamente suprimieron Cynodon de 4 a 16% a las 6 semanas después del tratamiento en 2009 y de 0 al 57% a las 6 semanas después del tratamiento en 2010. El daño a Zoysia fue < 25% para todas los tiempos de aplicación y disminuyó de 0 a 7% a las 5 semanas después del tratamiento cada año. Estudios en el futuro deben evaluar la supresión de Cynodon con otros herbicidas, usando modelos de grados de crecimiento acumulado por día y modelos de enfriamiento acumulativo.

Keywords

Fluazifoptriclopyrbermudagrass (Cynodon dactylon L. Pers.) ‘Riviera’zoysiagrass (Zoysia japonica Steud.) ‘Zenith’Efficacygolf coursegrowing-degree dayturf
Type
Weed Management—Other Crops/Areas
Information
Weed Technology , Volume 25 , Issue 4 , December 2011 , pp. 591 - 597
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

Anonymous. 2009. Fusilade II product label. Syngenta Crop Protection. Greensboro, NC Syngenta. Pp. 1–37.Google Scholar
Brosnan, J. T. and Breeden, G. K. 2009. Surface applications of dazomet provide non-selective control of seashore paspalum. Weed Technol. 23:270–273.Google Scholar
Brosnan, J. T., Breeden, G. K., Elmore, M. T., and Zidek, J. M. 2010. Early and late postemergence control of dallisgrass (Paspalum dilatatum Poir.) in tall fescue. Appl. Turf. Sci. DOI: 10.1094/ATS-2010-0312-02-RSGoogle Scholar
Brosnan, J. T., DeFrank, J., Woods, M. S., and Breeden, G. K. 2009a. Sodium chloride salt applications provide effective control of sourgrass (Paspalum conjugatum Berg.) in seashore paspalum turf. Weed Technol. 23:251–256.Google Scholar
Brosnan, J. T., DeFrank, J., Woods, M. S., and Breeden, G. K. 2009b. Efficacy of sodium chloride applications for control of goosegrass (Eleusine indica) in seashore paspalum turf. Weed Technol. 23:179–183.Google Scholar
Carr, J. E., Davies, L. G., Cobb, A. H., and Pallett, K. E. 1986. Uptake, translocation and metabolism of fluazifop-p-butyl in Setaria viridis . Ann. Appl. Biol. 108:115–123.Google Scholar
Cudney, D. W., Elmore, C. L., Gibeault, V. A., and Reints, J. S. 1997. Common bermudagrass (Cynodon dactylon) management in cool-season turfgrass. Weed Technol. 11:478–483.Google Scholar
Dale, T. M. and Renner, K. A. 2005. Timing of postemergence micro-rate applications based on growing degree days in sugarbeet. J. Sugar Beet Res. 42:87–100.Google Scholar
Dernoeden, P. H. 1989. Bermudagrass suppression and zoysiagrass tolerance to fenoxaprop. Pages 285–290 in Proceedings of the Sixth International Turfgrass Research Conference. Tokyo, Japan.Google Scholar
Doroh, M. C., McElroy, J. S., and van Santen, E. 2010. Evaluation of new aryloxyphenoxyproponiate herbicides for bermudagrass control in zoysiagrass. Weed Technol. 25:97–102.Google Scholar
Dunn, J. H. and Nelson, C. J. 1974. Chemical changes occurring in three bermudagrass turf cultivars in relation to cold hardiness. Agron. J. 66:28–31.Google Scholar
Johnson, B. J. 1987. Turfgrass species response to herbicides applied postemergence. Weed Technol. 1:305–311.Google Scholar
Johnson, B. J. 1992. Common bermudagrass (Cynodon spp.) suppression in Zoysia spp. with herbicides. Weed Technol. 6:813–819.Google Scholar
Johnson, B. J. and Carrow, R. N. 1995. Influence of fenoxaprop and ethofumesate treatments on suppression of common bermudagrass (Cynodon dactylon) in tall fescue (Festuca arundinacea) turf. Weed Technol. 9:789–793.Google Scholar
Lewis, D. F., McElroy, J. S., Sorochan, J. C., Mueller, T. C., Samples, T. J., and Breeden, G. K. 2010. Efficacy and safening of aryloxyphenoxypropionate herbicides when tank mixed with triclopyr for bermudagrass control in zoysiagrass turf. Weed Technol. 24:489–494.Google Scholar
Lyman, G. T., Throssell, C. S., Johnson, M. E., Stacey, G. A., and Brown, C. D. 2007. Golf course profile describes turfgrass, landscape, and environmental stewardship features. Appl. Turf. Sci. DOI: 10.1094/ATS-2007-1107-01-RSGoogle Scholar
McCarty, L. B. 1996. Selective control of common bermudagrass in St. Augustinegrass. Crop Sci. 36:694–698.Google Scholar
McCarty, L. B. and Miller, G. 2002. Managing Bermudagrass Turf: Selection, Construction, Cultural Practices, and Pest Management Strategies. Chelsea, MI Ann Arbor Press. Pp. 3–8.Google Scholar
McElroy, J. S. and Breeden, G. K. 2006. Triclopyr safens the use of fluazifop and fenoxaprop on zoysiagrass while maintaining bermudagrass suppression. Appl. Turf. Sci. DOI: 10.1094/ATS-2006-0502-01-RSGoogle Scholar
McIntosh, M. S. 1983. Analysis of combined experiments. Agron. J. 75:153–155.Google Scholar
McMaster, G. S. and Wilhelm, W. W. 1997. Growing degree days: one equation, two interpretations. Agric. For. Meteorol. 87:291–300.Google Scholar
Patton, A. J. 2010. Selecting zoysiagrass cultivars: turf quality and stress tolerance. Golf Course Mgmt. 78:90–95.Google Scholar
Senseman, S. A., ed. 2007. Herbicide Handbook. 9th ed. Lawrence, KS Weed Science Society of America. Pp. 31–33.Google Scholar
Teuton, T. C., Main, C. L., Sorochan, J. C., McElroy, J. S., Hart, W. E., Sams, C. E., and Mueller, T. C. 2008. Hybrid Kentucky bluegrass tolerance to preemergence and postemergence herbicides. Weed Technol. 22:240–244.Google Scholar