Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-18T10:13:29.406Z Has data issue: false hasContentIssue false
  • English
  • Français

Suppression of a Perennial Subspecies of Annual Bluegrass (Poa annua spp. reptans) in a Creeping Bentgrass (Agrostis stolonifera) Green with Plant Growth Regulators

Published online by Cambridge University Press:  12 June 2017

B. Jack Johnson  and
Tim R. Murphy
B. Jack Johnson
Affiliation:
Univ. Georgia, Georgia Agric. Exp. Stn., Griffin, GA 30223-1797
Tim R. Murphy
Affiliation:
Univ. Georgia, Georgia Agric. Exp. Stn., Griffin, GA 30223-1797
Get access Rights & Permissions [Opens in a new window]

Abstract

Paclobutrazol and flurprimidol were evaluated for suppression of a perennial subspecies of annual bluegrass in a creeping bentgrass green. Three applications of paclobutrazol in the spring (Mar. 17, Apr. 17, and May 17) followed by three applications in the fall (Oct. 2, Nov. 2, and Nov. 30) suppressed the perennial subspecies ≥ 72% at 3 wk after the final treatment. However, suppression was reduced to ≤ 57% by 4 mo after the final fall application. Flurprimidol applied in three spring and three fall applications did not suppress the perennial subspecies as effectively as paclobutrazol. Suppression was ≤ 47% at 3 wk after the final flurprimidol treatment and was only ≤ 20% by mid-March. Neither chemical injured creeping bentgrass greater than 20% in the spring. However, leaf discoloration injury from the initial October application ranged from 26 to 30% for paclobutrazol in 1993 and 21 to 28% for flurprimidol in 1994. When injury occurred in October it was temporary and the creeping bentgrass recovered within 3 to 4 wk. Paclobutrazol and flurprimidol applied in November did not injure creeping bentgrass.

Keywords

Flurprimidol, α-(1-methylethyl)-α-[4-(trifluoromethoxy)phenyl]-5-pyrimidine-methanolpaclobutrazol, (±)-(R*R*) β-[(4-chlorophenyl)methyl]-α-(1,1-dimethylethyl)-1H-1,2-4-triazole-1-ethanolPoa annua spp. reptans (Hausskn.) Timm. # POAANcreeping bentgrass, Agrostis stolonifera L. ‘Penncross.’Golf putting greenflurprimidolpaclobutrazolplant growth regulatorsturfgrass injuryweed control
Type
Research
Information
Weed Technology , Volume 10 , Issue 4 , December 1996 , pp. 705 - 709
Copyright
Copyright © 1996 by the 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

1. Branham, B. E. 1991. Dealing with Poa annua . Golf Course Manage. 59(9): 46–60.Google Scholar
2. Breuninger, J. 1993. Poa annua control in bentgrass greens. Golf Course Manage. 61(8): 68–73.Google Scholar
3. Callahan, L. M. and McDonald, E. R. 1992. Effectiveness of bensulide in controlling two annual bluegrass (Poa annua) subspecies. Weed Technol. 6:97–103.CrossRefGoogle Scholar
4. Dernoeden, P. H. and Turner, T. R. 1988. Annual bluegrass control and tolerance of Kentucky bluegrass and perennial ryegrass to ethofumesate. HortScience 23:565–567.CrossRefGoogle Scholar
5. Gibeault, V. A. 1966. Investigations on the control of annual meadowgrass. J. Sports Turf Res. Inst. 42:17–41.Google Scholar
6. Gibeault, V. A. and Goetze, N. R. 1972. Annual meadowgrass. J. Sports Turf Res. Inst. 48:9–19.Google Scholar
7. Hovin, A. W. 1957. Variation in annual bluegrass. Golf Course Rep. 25:7, 18.Google Scholar
8. Johnson, B.J. 1975. Control of annual bluegrass with herbicides in dormant bermudagrass. Georgia Agric. Res. Bul. 163:1–14.Google Scholar
9. Johnson, B. J. and Murphy, T. R. 1995. Effect of paclobutrazol and flurprimidol on suppression of Poa annua spp. reptans in creeping bentgrass (Agrostis stolonifera) greens. Weed Technol. 9:182–186.CrossRefGoogle Scholar
10. Lee, W. D. 1981. Control of annual bluegrass (Poa annua) in perennial ryegrass (Lolium perenne) seed fields. Weed Sci. 29:444–447.CrossRefGoogle Scholar
11. Menu, W. G. 1986. Use of fenarimol for selectively controlled Poa annua in an overseeded bermudagrass golf green. U.S. Golf Assoc. Green Sect. Rec. 24(5): 11–12.Google Scholar
12. SAS Institute. 1982. SAS User's Guide, SAS Institute, Inc., Cary, N.C. Google Scholar
13. Turgeon, A.J. 1974. Annual bluegrass control with herbicides in cool-season turfgrasses. p. 382–389 in Roberts, E. C., ed. Proc. Second Int. Turfgrass Res. Conf. Am. Soc. Agron., Madison, WI.Google Scholar
14. Wu, L., Harding, J. A., Borgonovo, M., and Harivandi, M. A. 1992. The versatile Poa annua L.: wanton weed and/or golf turf. California Agric. 46(3): 24–26.CrossRefGoogle Scholar