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Effects of 2,4,5-T During the Approach of Woody Plant Dormancy

Published online by Cambridge University Press:  12 June 2017

R. P. Upchurch ,
J. A. Keaton  and
H. D. Coble
R. P. Upchurch
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, North Carolina Agricultural Division, Monsanto Co., St. Louis, Mo.
J. A. Keaton
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, North Carolina Elanco Products Co., Raleigh, N. C.
H. D. Coble
Affiliation:
Crop Science Department, North Carolina State University, Raleigh, North Carolina University of Illinois, Urbana, Illinois
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Abstract

The shoots of naturally established specimens of turkey oak (Quercus laevis Walt.) and red maple (Acer rubrum L.) were treated under conditions of approaching dormancy. Aqueous sprays of 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) were applied as foliar treatments to the point of run-off at 2-week intervals beginning September 13 and continuing until three applications had been made for turkey oak and five had been made for red maple. Three experiments were conducted for turkey oak and two for red maple. Application rates were 2, 4, 8, and 16 lb of 2,4,5-T aehg of spray solution except that the 16-1b rate was deleted for turkey oak. Ester and amine derivatives were evaluated. Responses measured 9, 12, and 24 months after initiation of the experiments were percent control of original shoots, percent control of new shoots, shoot height, and number of live stems/plant. The average estimated control of original shoots of turkey oak and red maple increased from 42 to 54% as the application date was advanced from September 13 to October 11. The average height of the plants treated September 13 considering all evaluation dates was 3.4 ft compared to 2.6 ft for treatment made 4 weeks later. The results suggest two seasonal peaks in the response of some woody plants to foliar treatments of 2,4,5-T and that herbicidal effectiveness can be enhanced by application at the onset of senescence and dormancy.

Type
Research Article
Information
Weed Science , Volume 17 , Issue 2 , April 1969 , pp. 229 - 233
Copyright
Copyright © 1969 Weed Science Society of America 

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References

Literature Cited

1. Badiei, A. A., Basler, E., and Santelmann, P. W. 1965. A study of phenoxy herbicides in blackjack oak. Proc. SWC 18:603. (Abstr.) Google Scholar
2. Badiei, A. A., Basler, E., and Santelmann, P. W. 1966. Aspects of movement of 2,4,5-T to blackjack oak. Weeds 14:302–305.Google Scholar
3. Basler, E. 1962. Penetration, movement and behavior of herbicides in woody plants. Proc. SWC 15:8–15.Google Scholar
4. Basler, E., King, C. C., Badiei, A. A., and Santelmann, P. W. 1964. The breakdown of phenoxy herbicides in blackjack oak. Proc. SWC 17:351–355.Google Scholar
5. Beatty, R. H. 1953. Brush control—Status of chemical methods. J. Agr. Food Chem. 1:178–181.Google Scholar
6. Burns, P. Y. 1961. Weed control in timberlands. Proc. SWC 14:17–20.Google Scholar
7. Carter, M. C. and Chappell, W. E. 1957. The effect of carrier, formulation of phytocide, and time of treatment on the percentage kill of certain woody plants. Proc. NCWCC 11:209–218.Google Scholar
8. Coulter, L. L. 1954. Some aspects of right-of-way brush control with 2,4,5-T and 2,4-D. Weeds 3:21–27.Google Scholar
9. Currier, H. B. and Dybing, C. D. 1959. Foliar penetration of herbicides—Review and present status. Weeds 7:195–213.CrossRefGoogle Scholar
10. Dalrymple, A. V. and Basler, E. 1963. Seasonal variation in absorption and translocation of 2,4,5-trichloTophenoxyacetic acid and respiration rates in blackjack oak. Weeds 11:41–45.Google Scholar
11. Emrick, W. E. and Leonard, O. A. 1954. Delayed kill of interior live oak by fall treatment with 2,4-D and 2,4,5-T. J. Range Manage. 7:75–76.Google Scholar
12. Keaton, J. A. and Upchurch, R. P. 1964. The influence of 2,4,5-trichloro-phenoxyacetic acid (2,4,5-T) on Quercus Laevis . Proc. SWC 17:284. (Abstr.) Google Scholar
13. Leonard, O. A. and Crafts, A. S. 1956. Translocation of herbicides III. Uptake and distribution of radioactive 2,4-D by brush species. Hilgardia 26:366–415.Google Scholar
14. Miller, W. F. and Starr, J. W. 1963. The role of moisture regime in pine and hardwood kill. Proc. SWC 16:223–231.Google Scholar
15. Morton, H. L. 1966. Influence of temperature and humidity on foliar absorption, translocation, and metabolism of 2,4,5-T by mesquite seedlings. Weeds 14:136–141.Google Scholar
16. Peevy, F. A. 1961. Killing woody plants with herbicides. Proc. SWC 14:208–217.Google Scholar
17. Southwick, L. 1950. Recent developments in chemical brush control. Proc. SWC 3:150–159.Google Scholar
18. Suggitt, J. W. 1952. Recent research in chemical brush control. Proc. NCWCC 9:59–63.Google Scholar
19. Weaver, R. J. and DeRose, H. R. 1946. Absorption and translocation of 2,4-dichlorophenoxyacetic acid. Botan. Gaz. 107:509–521.Google Scholar
20. Woods, F. W., Harris, H. C., and Caldwell, R. E. 1959. Monthly variations of carbohydrates and nitrogen in roots of sandhill oaks and wiregrass. Ecology 40:292–295.Google Scholar
21. Worley, D. P., Bramble, W. C., and Byrnes, W. R. 1957. Investigations of the use of 2,4,5-T esters as a basal spray in the control of bear oak. Weeds 5:121–132.Google Scholar