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Interaction of Surfactants with Plant Cuticles

Published online by Cambridge University Press:  20 January 2017

F. Dan Hess  and
Chester L. Foy
F. Dan Hess
Affiliation:
AffyAgro Unit of Affymax Research Institute, 3410 Central Expressway, Santa Clara, CA 95051-0703
Chester L. Foy*
Affiliation:
Department of Plant Pathology, Physiology, and Weed Science, Virginia Polytechnic Institute and State University, 502 Price Hall, Blacksburg, VA 24061-0331
*
Corresponding author's E-mail: cfoy@vt.edu.
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Abstract

How surfactants modify the characteristics of a spray liquid is now reasonably well understood. Beneficial effects are primarily associated with reduction in surface tension. However, the mechanisms whereby surfactants enhance the diffusion of herbicides across the plant cuticle are less clear. Generally, hydrophilic surfactants with a high hydrophile/lipophile balance (HLB) are most effective at enhancing penetration of herbicides with high water solubility, whereas lipophilic surfactants with a low HLB are most effective for enhancing uptake of herbicides with low water solubility. Both high- and low-HLB surfactants are absorbed into the cuticle, but current theory suggests different mechanisms are involved in enhancing diffusion of hydrophilic and lipophilic herbicides across the cuticle. Surfactants having a high HLB are absorbed into the cuticle and enhance the water-holding capacity (hydration state) of the cuticle. With increased cuticle hydration, the permeance of hydrophilic herbicides into the cuticle is increased, which increases the herbicide diffusion rate at a constant concentration gradient. Surfactants having a low HLB are absorbed into the cuticle and increase the fluidity of waxes, as measured by a small reduction in melting point. This increased fluidity increases the permeance of lipophilic herbicides in the cuticle, which, in turn, increases their diffusion rate at a set concentration gradient.

Keywords

Herbicide diffusion, hydrophile/lipophile balance, surfactant mechanism of action, partition coefficient, permeance, postemergence herbicide absorptionEO, ethylene oxide; HLB, hydrophile/lipophile balance
Type
Symposium
Information
Weed Technology , Volume 14 , Issue 4 , December 2000 , pp. 807 - 813
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Briggs, C. G. and Bromilow, R. H. 1994. Influence of physicochemical properties on uptake and loss of pesticides and adjuvants from the leaf surface. In Holloway, P. J., Rees, R. T., and Stock, D., eds. Interactions Between Adjuvants, Agrochemicals and Target Organisms. Berlin: Springer-Verlag. pp. 1–26.Google Scholar
Buick, R. D., Buchan, G. D., and Field, R. J. 1993. The role of surface tension of spreading droplets in absorption of a herbicide formulation via leaf stomata. Pestic. Sci. 38: 227–235.Google Scholar
Buick, R. D., Robson, R., and Field, R. J. 1992. A mechanistic model to describe organosilicone surfactant promotion of triclopyr uptake. Pestic. Sci. 36: 127–133.Google Scholar
Bukovac, M. J. and Petracek, P. D. 1993. Characterizing pesticide and surfactant penetration with isolated plant cuticles. Pestic. Sci. 37: 179–194.CrossRefGoogle Scholar
Bukovac, M. J., Petracek, P. D., Fader, R. G., and Morse, R. D. 1990. Sorption of organic compounds by plant cuticles. Weed Sci. 38: 289–298.Google Scholar
Bukovac, M. J. and Norris, R. F. 1968. Foliar penetration of plant growth substances with special reference to binding by cuticular surfaces of pear leaves. Agrochemica 12: 217–230.Google Scholar
Coret, J. M. and Chamel, A. R. 1993. Influence of some nonionic surfactants on water sorption by isolated tomato fruit cuticles in relation to cuticular penetration of glyphosate. Pestic. Sci. 38: 27–32.Google Scholar
Coret, J. M. and Chamel, A. R. 1994. Effect of some ethoxylated alkylphenols and ethoxylated alcohols on the transfer of [14C]chlorotoluron across isolated plant cuticles. Weed Res. 34: 445–451.CrossRefGoogle Scholar
Coret, J. M. and Chamel, A. R. 1995. Effects and possible mode of action of some nonionic surfactants on the diffusion of [14C]glyphosate and [14C]chlorotoluron across isolated plant cuticles. Pestic. Sci. 43: 163–166.CrossRefGoogle Scholar
Coret, J. M., Gambonnet, B., Brabet, F., and Chamel, A. R. 1993. Diffusion of three ethoxylated octylphenols across isolated plant cuticles. Pestic. Sci. 38: 201–209.Google Scholar
de Ruiter, H., Uffing, A.J.M., and Meinen, E. 1996. Influence of surfactants and ammonium sulfate on glyphosate phytotoxicity to quackgrass (Elytrigia repens). Weed Technol. 10: 803–808.CrossRefGoogle Scholar
Gaskin, R. E. 1995. Effect of organosilicone surfactants on the foliar uptake of herbicides: Stomatal infiltration versus cuticular penetration. In Gaskin, R. E., ed. Proc. Fourth Int. Symp. Adjuvants for Agrochemicals. NZ FRI Bull. No. 183, Rotura, NZ. pp. 243–248.Google Scholar
Green, C. F., Rimmer, H. E., Beers, E. H., and Stevens, P.J.G. 1996. Organosilicone adjuvants to target agrochemicals to their sites of action. Proc. Brighton Crop Prot. Conf. pp. 813–819.Google Scholar
Harr, J., Guggenheim, R., Schulke, G., and Falk, R. H. 1991. The Leaf Surface of Major Weeds. Sandoz Agro, Ltd. Witterswil, Switzerland: Fricker Ltd. Press. 131 p.Google Scholar
Hess, F. D. and Falk, R. H. 1990. Herbicide deposition on leaf surfaces. Weed Sci. 38: 280–288.Google Scholar
Holloway, P. J. 1993. Structure and chemistry of plant cuticles. Pestic. Sci. 37: 203–206.CrossRefGoogle Scholar
Jeffree, C. E. 1996. Structure and ontogeny of plant cuticles. In Kerstiens, G., ed. Plant Cuticle: An Integrated Functional Approach. Environmental Biology Series. Oxford: BIOS Scientific Publishers. pp. 33–82.Google Scholar
Kirkwood, R. C. 1993. Use and mode of action of adjuvants for herbicides: A review of some current work. Pestic. Sci. 38: 93–102.Google Scholar
Kirkwood, R. C. 1994. Surfactant-pesticide-plant interactions. Biochem. Soc. Trans. 22: 611–616.Google Scholar
Kirkwood, R. C. 1999. Recent developments in our understanding of the plant cuticle as a barrier to the foliar uptake of pesticides. Pestic. Sci. 55: 69–77.Google Scholar
Knoche, M. 1994. Organosilicone surfactant performance in agricultural spray application: A review. Weed Res. 34: 221–239.Google Scholar
Knowles, D. A. 1995. Trends in the use of surfactants for pesticide formulations. Pestic. Outlook 6: 31–34.Google Scholar
Knowles, D. A., ed. 1998. Chemistry and Technology of Agrochemical Formulations. London: Chapman and Hall.Google Scholar
MacIsaac, S. A., Paul, R. N., and Devine, M. D. 1991. A scanning electron microscope study of glyphosate deposits in relation to foliar uptake. Pestic. Sci. 31: 53–64.Google Scholar
Marzouk, H., Baur, P., and Schönherr, J. 1998. Relative solubilities of bifenox and 1-naphthylacetic acid (NAA) in plant cuticles and in selected pure or aqueous glycol additives. Pestic. Sci. 53: 278–284.3.0.CO;2-3>CrossRefGoogle Scholar
Nalewaja, J. D., devilliers, B., and Matysiak, R. 1996. Surfactant and salt affect glyphosate retention and absorption. Weed Res. 36: 241–247.CrossRefGoogle Scholar
Nalewaja, J. D., Matysiak, R., and Freeman, T. P. 1992. Spray droplet residual of glyphosate in various carriers. Weed Sci. 40: 576–589.Google Scholar
Riechers, D. E., Wax, L. M., Liebl, R. A., and Bullock, D. G. 1995. Surfactant effects on glyphosate efficacy. Weed Technol. 9: 281–285.Google Scholar
Riederer, M. and Schönherr, J. 1990. Effects of surfactants on water permeability of isolated plant cuticles and on the composition of their cuticular waxes. Pestic. Sci. 29: 85–94.CrossRefGoogle Scholar
Santier, S. and Chamel, A. 1996. Penetration of triolein and methyl oleate through isolated plant cuticles and their effect on penetration of [14C]quizalofop-ethyl and [14C]fenoxaprop-ethyl. Weed Res. 36: 167–174.CrossRefGoogle Scholar
Schönherr, J. 1993a. Effects of monodisperse alcohol ethoxylates on mobility of 2,4-D in isolated plant cuticles. Pestic. Sci. 38: 155–164.Google Scholar
Schönherr, J. 1993b. Effects of alcohols, glycols, and monodisperse ethoxylated alcohols on mobility of 2,4-D in isolated plant cuticles. Pestic. Sci. 39: 213–223.Google Scholar
Schönherr, J. and Baur, P. 1994. Modelling penetration of plant cuticles by crop protection agents and effects of adjuvants on their rates of penetration. Pestic. Sci. 42: 185–208.Google Scholar
Schreiber, L. 1995. A mechanistic approach towards surfactant/wax interactions: Effects of octaethyleneglycolmonododecylether on sorption and diffusion of organic chemicals in reconstituted cuticular wax on barley leaves. Pestic. Sci. 45: 1–11.Google Scholar
Schreiber, L., Riederer, M., and Schorn, K. 1996. Mobilities of organic compounds in reconstituted cuticular wax of barley leaves: Effects of monodisperse alcohol ethoxylates on diffusion of pentachlorophenol and tetracosanolic acid. Pestic. Sci. 48: 117–124.Google Scholar
Schreiber, L. and Schönherr, J. 1993. Mobilities of organic compounds in reconstituted cuticular wax of barley leaves: Determination of diffusion coefficients. Pestic. Sci. 38: 353–361.CrossRefGoogle Scholar
Sharma, S. D., Kirkwood, R. C., and Whateley, T. L. 1996. Effect of nonionic nonylphenol surfactants on surface physicochemical properties, uptake and distribution of asulam and diflufenican. Weed Res. 36: 227–239.CrossRefGoogle Scholar
Stevens, P.J.G. 1993. Organosilicone surfactants as adjuvants for agrochemicals. Pestic. Sci. 38: 103–122.Google Scholar
Stock, D. and Holloway, P. J. 1993. Possible mechanisms for surfactant-induced foliar uptake of agrochemicals. Pestic. Sci. 38: 165–177.Google Scholar
Stock, D., Holloway, P. J., Grayson, B. T., and Whitehouse, P. 1993. Development of a predictive model to rationalize selection of polyoxyethylene surfactant adjuvants for foliage-applied agrochemicals. Pestic. Sci. 37: 233–245.Google Scholar
Tan, S. and Crabtree, G. D. 1992. Effects of nonionic surfactants on cuticular sorption and penetration of 2,4-dichlorophenoxy acetic acid. Pestic. Sci. 35: 299–303.Google Scholar
Tan, S. and Crabtree, G. C. 1994. Cuticular sorption and desorption of a nonionic diethylene glycol monoleate surfactant. Pestic. Sci. 41: 87–90.Google Scholar
Tann, R. S., Haggard, D., and McMullan, P. M. 1995. Effect of various carbon chain length methyl esters as agricultural tank mix adjuvants. In Gaskin, R. E., ed. Proc. Fourth Int. Symp. on Adjuvants for Agrochemicals. NZ FRI Bull. No. 193, New Zealand Forest Research Institute, Rotorua. pp. 72–77.Google Scholar
van Toor, R. F., Hayes, A. L., Cooke, B. K., and Holloway, P. J. 1994. Relationships between the herbicidal activity and foliar uptake of surfactantcontaining solutions of glyphosate applied to foliage of oats and field beans. Crop Prot. 13: 260–270.Google Scholar