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Absorption and Translocation of Glyphosate in Aspen (Populus tremuloides Michx.) as Influenced by Droplet Size, Droplet Number, and Herbicide Concentration

Published online by Cambridge University Press:  12 June 2017

Shu Hua Liu ,
Robert A. Campbell ,
John A. Studens  and
Robert G. Wagner
Shu Hua Liu
Affiliation:
Can. For. Serv., Box 490, Sault Ste. Marie, ON, Canada P6A 5M7
Robert A. Campbell
Affiliation:
Can. For. Serv., Box 490, Sault Ste. Marie, ON, Canada P6A 5M7
John A. Studens
Affiliation:
Can. For. Serv., Box 490, Sault Ste. Marie, ON, Canada P6A 5M7
Robert G. Wagner
Affiliation:
Ont. For. Res. Inst., Box 969, Sault Ste. Marie, ON, Canada P6A 5N5
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Abstract

When herbicide concentration was constant, absorption of 14C-glyphosate increased with increasing droplet size (326 to 977 μm). Amount of 14C-glyphosate translocated away from the treated area, expressed as percent of absorbed, increased as droplet size decreased. Herbicide concentration of the droplet was more important than droplet number or droplet size in determining glyphosate absorption and translocation. Absorption and translocation increased with increasing herbicide concentration regardless of whether droplet size or number was altered in conjunction with herbicide concentration. This relationship explained why low spray volume (increased herbicide concentration) increased herbicide efficacy. The concentration gradient between droplet and leaf, rather than droplet coverage, was the primary mechanism responsible for the observed effect. Large droplets caused localized tissue injury, which may have caused decreased translocation.

Keywords

Glyphosate, N-(phosphonomethyl) glycineaspen, Populus tremuloides Michx.♯ POPTMEfficacydroplet generatorforest weeddrop sizespray volume
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 44 , Issue 3 , September 1996 , pp. 482 - 488
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

Literature Cited

1. Ambach, R. and Ashford, R. 1982. Effects of variations in drop makeup on the phytotoxicity of glyphosate. Weed Sci. 30: 221–224.CrossRefGoogle Scholar
2. Boerboom, C. M. and Wyse, D. L. 1988. Influence of glyphosate concentration on glyphosate absorption and translocation in Canada thistle (Cirsium arvense). Weed Sci. 36: 291–295.CrossRefGoogle Scholar
3. Buhler, D. D. and Burnside, O. C. 1983. Effect of spray components on glyphosate toxicity to annual grass. Weed Sci. 31: 124–130.CrossRefGoogle Scholar
4. Buhler, D. D. and Burnside, O. C. 1987. Effects of application variables on glyphosate phytotoxicity. Weed Technol. 1: 14–17.CrossRefGoogle Scholar
5. Campbell, R.A. 1990. Herbicide use for forest management in Canada: where we are and where we are going. For. Chron. 66: 355–360.CrossRefGoogle Scholar
6. Cranmer, J. R. and Linscott, D. L. 1991. Effects of droplet composition on glyphosate absorption and translocation in velvetleaf (Abutilon theophrasti). Weed Sci. 39: 251–254.CrossRefGoogle Scholar
7. Draper, N.R. and Smith, H. 1981. Pages 505–506 in Applied regression analysis. John Wiley & Sons, Inc., New York.Google Scholar
8. Hoagland, D. R. and Arnon, D. I. 1950. The water culture method for growing plants without soil. Calif. Agric. Exp. Stn. Circ. 347. 32 pp.Google Scholar
9. Jordan, T.N. 1981. Effects of diluent volumes and surfactants on the phytotoxicity of glyphosate to bermudagrass (Cynodon dactylon). Weed Sci. 29: 79–83.CrossRefGoogle Scholar
10. Knoche, M. 1994. Effect of droplet size and carrier volume on performance of foliage-applied herbicides. Crop Protection. 13: 163–178.CrossRefGoogle Scholar
11. Kudsk, P. 1988. The influence of volume rates on the activity of glyphosate and difenzoquat assessed by a parallel-line assay technique. Pestic. Sci. 24: 21–29.CrossRefGoogle Scholar
12. McKinlay, K. S., Brandt, S. A., Morse, P., and Ashford, R. 1972. Droplet size and phytotoxicity of herbicides. Weed Sci. 20: 450–452.CrossRefGoogle Scholar
13. Merritt, C. R. 1982. The influence of form of deposit on the phytotoxicity of MCPA, paraquat and glyphosate applied as individual drops. Ann. Appl. Biol. 101: 527–532.CrossRefGoogle Scholar
14. O'Sullivan, P. A., O'Donovan, J. T., and Hamman, W. M. 1981. Influence of nonionic surfactants, ammonium sulphate, water quality and spray volume on the phylotoxicity of glyphosate. Can. J. Plant Sci. 61: 391–400.CrossRefGoogle Scholar
15. Prasad, R. 1988. Herbicide activity of glyphosate as affected by adjuvants and droplet size. Pages 181–186 in Proc. EWRS Symp. Factors affecting herbicidal activity and selectivity.Google Scholar
16. Prasad, R. and Cadogan, B. L. 1992. Influence of droplet size and density on phytotoxicity of three herbicides. Weed Technol. 6: 415–423.CrossRefGoogle Scholar
17. Sandberg, C. L., Meggitt, W. F., and Penner, D. 1978. Effect of diluent volume and calcium on glyphosate phytotoxicity. Weed Sci. 26: 476–479.CrossRefGoogle Scholar
18. SAS institute, Inc. 1989. The NLIN procedure. Pages 575–606 in SAS User's Guide: statistics. Version 6.0. SAS Institute Inc, Cary, NC 27511.Google Scholar
19. Stahlman, P. W. and Philips, W. M. 1979. Effects of water quality and spray volume on glyphosate phytotoxicity. Weed Sci. 27: 38–41.CrossRefGoogle Scholar
20. Wolf, T. M., Caldwell, B. C., McIntyre, G. I., and Hsiao, A. I. 1992. Effect of droplet size and herbicide concentration on absorption and translocation of 14C-2,4-D in oriental mustard (Sisymbrium orientale). Weed Sci. 40: 568–575.CrossRefGoogle Scholar