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Herbicide Concentrations in Live Oak Treated with Mixtures of Picloram and 2,4,5-T

Published online by Cambridge University Press:  12 June 2017

J. R. Baur ,
R. W. Bovey  and
J. D. Smith
J. R. Baur
Affiliation:
Crops Research Division, Agr. Res. Serv., U.S. Dep. of Agr., Dep. of Range Science, Texas A&M University, College Station, Texas
R. W. Bovey
Affiliation:
Crops Research Division, Agr. Res. Serv., U.S. Dep. of Agr., Dep. of Range Science, Texas A&M University, College Station, Texas
J. D. Smith
Affiliation:
Department of Plant Sciences, Texas A&M University, College Station, Texas
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Abstract

Recovery of (2,4,5-trichlorophenoxy)acetic acid (2,4,5-T), as the acid and ester, was significantly greater in live oak (Quercus virginiana Mill.) tissues treated with mixtures of the 2-ethylhexyl ester of 2,4,5-T (2 lb/A)-.potassium salt or isooctyl ester of 4-amino-3,5,6-trichloropicolinic acid (picloram) (1/2, 1 and 2 lb/A) than in tissues treated with 2 lb/A 2,4,5-T ester alone. Recovery of 2,4,5-T as the ester was noted in the middle and lower-stem tissues. Between 90 and 99% of the herbicide recovered 1 month after treatment was gone 6 months after treatment. Evaluation of brush reduction 2 years after treatment indicated that mixtures of picloram salt and 2,4,5-T resulted in greater reduction of brush than mixtures of picloram ester and 2,4,5-T or 2,4,5-T alone.

Type
Research Article
Information
Weed Science , Volume 17 , Issue 4 , October 1969 , pp. 567 - 570
Copyright
Copyright © 1969 Weed Science Society of America 

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References

Literature Cited

1. Baur, J. R. and Bovey, R. W. 1969. Distribution of root absorbed picloram. Weed Sci. (In press).Google Scholar
2. Bouse, L. F. 1969. Aerial spray penetration through foliage canopies. Transactions of the Am. Soc. Agr. Engr. 12:86–89.Google Scholar
3. Bovey, R. W., Davis, F. S., and Morton, H. L. 1968. Herbicide combinations for woody plant control. Weed Sci. 16: 332–335.Google Scholar
4. Bovey, R. W., Meyer, R. E., Davis, F. S., Merkle, M. G., and Morton, H. L. 1967. Control of woody and herbaceous vegetation with soil sterilants. Weeds 15:327–330.CrossRefGoogle Scholar
5. Bovey, R. W., Morton, H. L., and Baur, J. R. 1969. Control of live oak by herbicides applied at various rates and dates. Weed Sci. 17:373–375.Google Scholar
6. Crafts, A. S. 1960. Evidence for hydrolysis of 2,4-D during absorption by plants. Weeds 8:19–25.CrossRefGoogle Scholar
7. Hull, H. M. 1956. Herbicidal absorption and translocation in velvet mesquite seedlings. Weeds 4:22–42.Google Scholar
8. Hurtt, W. and Foy, C. L. 1965. Some factors affecting the excretion of foliarly applied dicamba and picloram from roots of Black Valentine beans. Plant Physiol. (Supp.) 40: xlviii.Google Scholar
9. Leonard, O. A., Baker, D. E. and Glenn, R. K. 1966. Translocation of herbicides and assimilates in red maple and white ash. Bot. Gaz. 127:193–201.Google Scholar
10. Merkle, M. G. and Davis, F. S. 1966. The use of gas chromatography in determining translocation of picloram and 2,4,5-T. Proc. So. Weed Conf. 19:557–561.Google Scholar
11. Norris, L. A. and Freed, V. H. 1966. The absorption and translocation characteristics of several phenoxyalkyl acid herbicides in bigleaf maple. Weed Res. 6:203–211.Google Scholar
12. Robinson, E. D. 1967. Response of mesquite to 2,4,5-T, picloram and 2,4,5-T/picloram combinations. Proc. So. Weed Conf. 20:199. (Abstr.) Google Scholar
13. Szabo, S. S. 1963. The hydrolysis of 2,4-D esters by bean and corn plants. Weeds 11:292–294.CrossRefGoogle Scholar