Hostname: page-component-848d4c4894-xm8r8 Total loading time: 0 Render date: 2024-06-18T02:56:07.007Z Has data issue: false hasContentIssue false
  • English
  • Français

Response of Southern Wax Myrtle (Myrica cerifera) to Herbicides in Florida

Published online by Cambridge University Press:  12 June 2017

R. S. Kalmbacher ,
J. E. Eger Jr.  and
A. J. Rowland-Bamford
R. S. Kalmbacher
Affiliation:
Agric. Res. and Ed. Cent., Univ. of Fla., Rt. 1, Box 62, Ona, FL 33865
J. E. Eger Jr.
Affiliation:
Agric. Res. and Ed. Cent., Univ. of Fla., Rt. 1, Box 62, Ona, FL 33865
A. J. Rowland-Bamford
Affiliation:
Agric. Res. and Ed. Cent., Univ. of Fla., Rt. 1, Box 62, Ona, FL 33865
Get access Rights & Permissions [Opens in a new window]

Abstract

Triclopyr (0.28, 0.56, and 1.12 kg ai ha−1); triclopyr + 2,4-D (0.56 + 1.12 kg ha−1); and dicamba (1.12 kg ha−1) were evaluated over 2 yr at two locations in Florida for southern wax myrtle control following spring (Mar. to Apr.) or summer (Aug. to Sept.) applications. All treatments were applied twice, 1 yr apart, except 1.12 kg ha−1 triclopyr, which was applied once in the initial year. In the first year, defoliation with triclopyr was quadratic with > 90% at 0.56 kg ha−1. In the second year, a single application of 1.12 kg ha−1 triclopyr resulted in similar (P > 0.05) defoliation compared with two applications of 0.56 kg ha−1 triclopyr. After 1 yr, increasing triclopyr rate resulted in a linear increase in mortality. After 2 yr, two applications of triclopyr at 0.56 kg ha−1 and triclopyr + 2,4-D caused lower (P < .01) mortality (45%) than a single application of 1.12 kg ha−1 triclopyr (63%). Addition of 2,4-D to triclopyr did not increase mortality. After 2 yr, two applications of 0.28 kg ha−1 triclopyr resulted in 21% mortality while two applications of dicamba were ineffective. Defoliation was often greater with spring, compared with summer applications, but often depended on treatment and location. Mortality was greater (P < 0.01) at 1 and 2 yr after summer application compared with spring application at one location, but not the other. Roots of wax myrtle were sampled on 28-d intervals in the first year and analyzed for total non-structural carbohydrate (TNC). Starch composed 630 g kg−1 of TNC in myrtle roots, with highest concentration of TNC (120 g kg−1) in March and lowest (30 g kg−1) in August.

Keywords

Dicamba, 3,6-dichloro-2-methoxybenzoic acid2,4-D, (2,4-dichlorophenoxy)acetic acidtriclopyr, [(3,5-6-trichloro-2-pyridinyl)oxy]acetic acidsouthern wax myrtle, Myrica cerifera L. # MYRCEPasture and range brush controltriclopyr2,4-DdicambaMYRCE
Type
Research
Information
Weed Technology , Volume 7 , Issue 1 , March 1993 , pp. 84 - 91
Copyright
Copyright © 1993 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. Ashwell, G. 1957. Colorimetric analysis of sugars. Methods Enzymol. 3:73.CrossRefGoogle Scholar
2. Fordham, A. J. 1983. Of birds and bayberries: seed dispersal and propagation of three Myrica species. Arnoldia 43:20–23.Google Scholar
3. Halls, L. K. 1977. Southern bayberry Myrica cerifera L. [Woody plants as wildlife food, species]. USDA-Forest Serv. Tech. Rep. Southern For. Exp. Stn. 16:57–58.Google Scholar
4. Hough, W. A. 1968. Carbohydrate reserves of saw-palmetto: seasonal variation and effects of burning. For. Sci 14:399–405.Google Scholar
5. Hughes, R. H. and Knox, F. E. 1964. Response of gallberry to seasonal burning. U.S. For. Serv. Res. Note SE-21, 3 p.Google Scholar
6. Kalmbacher, R. S., Boote, K. J., and Martin, F. G. 1983. Burning and 2,4,5-T application on mortality and carbohydrate reserves in saw palmetto. J. Range Manage. 36:9–12.CrossRefGoogle Scholar
7. Nelson, N. 1944. A photometric adaptation for Somogyi method for the determination of glucose. J. Biol. Chem. 153:375–380.CrossRefGoogle Scholar
8. Smith, D. 1981. Removing and analyzing total nonstructural carbohydrates from plant tissue. Serial No. R2107. Univ. Wisconsin. Madison, WI. 12. p.Google Scholar
9. Somogyi, N. 1952. Notes on sugar determination. J. Biol. Chem. 195: 19–23.CrossRefGoogle Scholar
10. Terry, S. W. and White, L. D. 1979. Southern wax-myrtle response following winter prescribed burning in south Florida. J. Range Manage. 32:326–327.CrossRefGoogle Scholar