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Effects of Illuminance and Time on Accumulation of Glyphosate in Johnsongrass (Sorghum halepense)

Published online by Cambridge University Press:  12 June 2017

J. J. Kells  and
C. E. Rieck
C. E. Rieck
Affiliation:
Agronomy Dep., Univ. of Kentucky, Lexington, KY 40506
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Abstract

Translocation of 14C-glyphosate [N-(phosphonomethyl) glycine] in johnsongrass [Sorghum halepense (L.) Pers.] was examined in relation to time and illuminance. Plants were treated with 14 C-glyphosate and harvested 3 days and 6 days after treatment. Translocation increased significantly between the 3 day and 6 day harvest. The greatest accumulation of 14 C occurred in areas of meristematic growth. The concentration of 14C recovered in rhizomes nearly doubled between the 3 day and 6 day harvest. Plants harvested after 3 days of treatment in the dark translocated 1.3% of the applied 14C, while plants exposed to full light translocated 4.7%. Plants harvested after 6 days of treatment in the dark translocated 2.1% of the applied 14C, while plants exposed to full light translocated 5.8%. Translocation data indicated that movement of glyphosate in johnsongrass was via the phloem. Accumulation of 14C in roots and rhizomes was significantly greater in plants exposed to full light compared with plants exposed to either darkness or shade.

Keywords

Translocationlight intensity
Type
Research Article
Information
Weed Science , Volume 27 , Issue 2 , March 1979 , pp. 235 - 237
Copyright
Copyright © 1979 by the Weed Science Society of America 

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References

Literature Cited

1. Claus, J. S. and Behrens, R. 1976. Glyphosate translocation and rhizome bud kill. Weed Sci. 24:149–152.Google Scholar
2. Crafts, A. S. and Yamaguchi, S. 1964. The autoradiography of plant materials. California Agric. Exp. Stn. Manual 35. 143 pp.Google Scholar
3. Jordon, T. N. 1977. Effects of temperature and relative humidity on the toxicity of glyphosate to bermudagrass. Weed Sci. 25:448–451.Google Scholar
4. McWhorter, C. G. 1971. Growth and development of johnsongrass ecotypes. Weed Sci. 19.141–147.CrossRefGoogle Scholar
5. McWhorter, C. G. 1971. Introduction and spread of johnsongrass in the United States. Weed Sci. 19:496–500.Google Scholar
6. Parochetti, J. V., Wilson, H. P., and Burt, G. W. 1975. Activity of glyphosate on johnsongrass. Weed Sci. 23:395–400.CrossRefGoogle 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.CrossRefGoogle Scholar
8. Sprankle, P., Meggett, W. F., and Penner, D. 1975. Absorption, action, and translocation of glyphosate. Weed Sci. 23:235–240.Google Scholar
9. Steel, R. G. D. and Torrie, J. H. 1960. Principles and procedures of statistics. McGraw Hill Book Co., New York. 481 pp.Google Scholar
10. Upchurch, R. P. and Baird, D. D. 1972. Herbicidal action of MON-0573 as influenced by light and soil. Proc. West. Weed Sci. Soc. 25:41–44.Google Scholar
11. Wang, C. H. and Willis, D. L. 1965. Radiotracer methodology in biological science. Prentice-Hall Inc., Englewood, New Jersey. 363 pp.Google Scholar