Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-24T04:43:40.830Z Has data issue: false hasContentIssue false

Absorption of 2,4-D, Dicamba, and Glyphosate by Excised Honeyvine Milkweed (Cynanchum Laeve) Leaves

Published online by Cambridge University Press:  12 June 2017

John K. Soteres
Affiliation:
Dep. Agron., Oklahoma State Univ., Stillwater, OK 74078
Don S. Murray
Affiliation:
Dep. Agron., Oklahoma State Univ., Stillwater, OK 74078
Eddie Basler
Affiliation:
Dep. Bot., Oklahoma State Univ., Stillwater, OK 74078

Abstract

Absorption of 2,4-D [(2,4-dichlorophenoxy) acetic acid], dicamba [3,6-dichloro-o-anisic acid], and the isopropylamine salt of glyphosate [N-(phosphonomethyl) glycine] by excised honeyvine milkweed [Cynanchum laeve (Michx.) Pers.] leaves was determined. Experimental variables included leaf position (terminal vs. basal), a surfactant, 4-isopropenyl-1-methylcyclohexane plus unspecified emulsifiers (SA-77), and leaf collection dates. Absorption of the three herbicides by terminal and basal leaves was increased by the addition of the surfactant. However, the surfactant increased absorption into basal leaves more than into terminal leaves. The surfactant reduced surface tension and increased drying time of water droplets on adaxial leaf surfaces by 50%. The pH of the herbicide solutions was reduced from about 5.8 to about 3.9 by SA-77. Absorption of all three herbicides was greater into terminal than into basal leaves when the surfactant was not present, but the difference disappeared when the surfactant was added. Generally, no differences were observed in the absorption of 2,4-D and dicamba. Glyphosate absorption was greater in terminal leaves collected after a period of adequate moisture than after a period of dry soil conditions.

Type
Research Article
Copyright
Copyright © 1983 Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Coble, H. D., Slife, F. W., and Butler, H. S. 1970. Absorption, metabolism, and translocation of 2,4-D by honeyvine milkweed. Weed Sci. 18:653656.Google Scholar
2. Crisp, C. E. 1972. The molecular design of systemic insecticides and organic functional groups in translocation. Pages 211264 in Tahori, T. S., ed. Pesticide Chemistry. Vol. I. Gordon and Breach Publ., New York.Google Scholar
3. Currier, H. B. and Dybing, C. D. 1959. Foliar penetration of herbicides — review and present status. Weeds 7:195213.Google Scholar
4. Foy, C. L. 1961. Absorption, distribution, and metabolism of 2,2-dichloropropionic acid in relation to phytotoxicity. I. Penetration and translocation of Cl36- and C14-labeled dalapon. Plant Physiol. 36:688697.Google Scholar
5. Freed, V. H. and Montgomery, M. 1958. The effect of surfactants on foliar absorption of 3-amino-1,2,4-triazole. Weeds 6:386389.Google Scholar
6. Furmidge, C.G.L. 1959. Physico-chemical studies on agricultural sprays. II. The phytotoxicity of surface-active agents on leaves of apple and plum trees. J. Sci. Food Agric. 10:274282.Google Scholar
7. Hull, H. M. 1970. Leaf structure as related to absorption of pesticides and other compounds. Residue Rev. 31:1155.Google Scholar
8. Hull, H. M., Morton, H. L., and Wharrie, J. R. 1975. Environmental influences on cuticle development and resultant foliar penetration. Bot. Rev. 41:421451.Google Scholar
9. Jones, D. W. and Foy, C. L. 1972. Tracer studies with 14C-labeled herbicides, DMSO, and surfactant. Weed Sci. 20:8186.Google Scholar
10. Sargent, J. A. and Blackman, G. E. 1972. Studies on foliar penetration. IX. Patterns of penetration of 2,4-dichlorophenoxy acetic acid into leaves of different species. J. Exp. Bot. 23:830841.Google Scholar
11. Skoss, J. D. 1955. Structure and composition of plant cuticle in relation to environmental factors and permeability. Bot. Gaz. 117:5572.Google Scholar
12. Smith, L. W. and Foy, C. L. 1967. Interactions of several paraquat surfactant mixtures. Weeds 15:6772.Google Scholar
13. Whitecross, M. I. and Armstrong, D. J. 1972. Environmental effects on epicuticular waxes of Brassica napus L. Aust. J. Bot. 20:8795.Google Scholar
14. Wilkinson, R. E. 1974. Sicklepod surface wax response to photoperiod and [S-(2,3-dichloroallyl)diisopropylthiocarbamate] (diallate). Plant Physiol. 53:269275.Google Scholar
15. Wilkinson, R. E. and Kasperbauer, M. J. 1972. Epicuticular alkane content of tobacco as influenced by photoperiod, temperature, and leaf age. Phyto chemistry 11:24392442.Google Scholar
16. Wyrill, J. B., and Burnside, O. C. 1976. Absorption, translocation, and metabolism of 2,4-D and glyphosate in common milkweed and hemp dogbane. Weed Sci. 24:557566.Google Scholar
17. Wyrill, J. B. and Burnside, O. C. 1977. Glyphosate toxicity to common milkweed and hemp dogbane as influenced by surfactants. Weed Sci. 25:275287.CrossRefGoogle Scholar