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Absorption, Translocation, and Metabolism of 2,4-D and Glyphosate in Hemp Dogbane (Apocynum cannabinum)

Published online by Cambridge University Press:  12 June 2017

M. E. Schultz  and
O. C. Burnside
M. E. Schultz
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
O. C. Burnside
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
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Abstract

Low recoveries of total applied 14C in translocation studies and erratic control of hemp dogbane (Apocynum cannabinum L.) in the field showed a need for a balance-sheet study of absorption, translocation, and metabolism of 14C-2,4-D [(2,4-dichlorophenoxy) acetic acid] and 14C-glyphosate [N-(phosphonomethyl)glycine]. Total recovery of 14C-herbicides applied to hemp dogbane in the laboratory was 97% for 2,4-D and 105% for glyphosate. Of the 14C recovered after 12 days in the hemp dogbane, 34 to 55% was parent-2,4-D after 2,4-D treatment, and 93 to 96% was parent glyphosate after glyphosate treatment. Only negligible amounts of 14C were lost via volatilization or evolution as 14CO2. A broadcast treatment with unlabeled herbicide did not significantly affect subsequent absorption, translocation, or metabolism of either herbicide. Total herbicide absorbed and translocated out of the treated area of the leaf generally increased during the subsequent 12 days for 2,4-D but only 3 days for glyphosate. A greater percentage of the total applied 2,4-D (31 vs. 14%) and glyphosate (14 vs. 8%) was translocated from upper rather than lower leaves of hemp dogbane, respectively. Higher temperatures (30 vs. 25 C) resulted in greater translocation of glyphosate (39 vs. 18%) but not 2,4-D (35 vs. 39%). Higher light intensities resulted in greater accumulations of 2,4-D into roots and of glyphosate into untreated areas of the treated leaf. Autoradiographs showed that both herbicides moved through hemp dogbane in a typical symplastic pattern and accumulated in roots and new leaves.

Keywords

Autoradiographs14C-labeled herbicidesherbicide balance-sheetvolatilization
Type
Research Article
Information
Weed Science , Volume 28 , Issue 1 , January 1980 , pp. 13 - 20
Copyright
Copyright © 1980 by the Weed Science Society of America 

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References

Literature Cited

1. Caseley, J. C. 1972. The effect of environmental factors on the performance of glyphosate against Agropyron repens . Proc. Brit. Weed Control Conf. 11:641–647.Google Scholar
2. Claus, J. S. and Behrens, R. 1976. Glyphosate translocation and quackgrass rhizome bud kill. Weed Sci. 24:149–152.CrossRefGoogle Scholar
3. Fang, S. C., Jaworski, E. G., Logan, A. V., Freed, V. H., and Butts, J. S. 1951. The absorption of radioactive 2,4-dichlorophenoxyacetic acid and the translocation of 14C by bean plants. Arch. Biochem. Biophys. 32:249–255.Google Scholar
4. Fawcett, R. S. and Davis, H. E. 1976. Effect of environment on glyphosate activity in quackgrass Proc. North Cent. Weed Control Conf. 31:159–160.Google Scholar
5. Gigax, D. R., Bybee, T. A., and Messersmith, C. G. 1976. Techniques of applying 14C-2,4-D on perennial weeds. Proc. North Cent. Weed Control Conf. 31:29.Google Scholar
6. Gottrup, O., O'Sullivan, P. A., Schraa, R. J., and Vander Born, W. H. 1976. Uptake, translocation, metabolism, and selectivity of glyphosate in Canada thistle and leafy spurge. Weed Res. 16:197–201.Google Scholar
7. Rioux, R., Bandeen, J. D., and Anderson, G. W. 1974. Effects of growth stage on translocation of glyphosate in quackgrass. Can. J. Plant Sci. 54:397–401.Google Scholar
8. Sandberg, C. L. and Meggitt, W. F. 1977. Postemergence applications of glyphosate for field bindweed and hedge bindweed control. North Cent. Weed Control Conf. Res. Rep. 34:363–365.Google Scholar
9. Schultz, M. E. and Burnside, O. C. 1979. Control of hemp dogbane (Apocynum cannabinum) with foliar and soil applied herbicides. Agron. J. 71:723–730.CrossRefGoogle Scholar
10. Schultz, M. E. and Burnside, O. C. 1979. Effect of lanolin or lanolin + starch rings on absorption and translocation of 2,4-D or glyphosate in hemp dogbane. Weed Sci. Vol. 27 (In press).Google Scholar
11. Suwanketnikom, R. and Penner, D. 1976. Environmental influence on yellow nutsedge control with bentazon and glyphosate. Proc. North Cent. Weed Control Conf. 31:141.Google Scholar
12. Upchurch, R. P., Baird, D. D., and Begeman, G. F. 1972. Influence of temperature and diluent properties of MON-0468 performance. Weed Sci. Soc. Am. Abstr. p. 80.Google Scholar
13. Weintraub, R. L., Brown, J. W., Fields, M., and Rohan, J. 1952. Metabolism of 2,4-dichlorphenoxyacetic acid. I. 14CO2 production by bean plants treated with labeled 2,4-dichlorophenoxyacetic acids. Plant Physiol. 27:293–301.CrossRefGoogle Scholar
14. Wyrill, J. B. III and Burnside, O. C. 1976. Absorption, translocation, and metabolism of 2,4-D and glyphosate in common milkweed and hemp dogbane. Weed Sci. 24:557–566.Google Scholar
15. Zandstra, B. H. and Nishimoto, R. K. 1977. Movement and activity of glyphosate in purple nutsedge. Weed Sci. 25:268–274.CrossRefGoogle Scholar