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Adjuvant Effects on Absorption, Translocation, and Metabolism of Haloxyfop-Methyl in Corn (Zea mays)

  • S. Kent Harrison (a1) and Loyd M. Wax (a2)


The effects of adjuvants and relative humidity (RH) on absorption, translocation, and metabolism of the methyl ester of 14C-haloxyfop {2-[4-[[3-chloro-5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy] propanoic acid} in corn (Zea mays L. ‘B73 X Mo17’ hybrid) were evaluated. Addition of 1.0% (v/v) petroleum oil concentrate (POC) to the treatment solution resulted in greater foliar absorption and translocation of 14C than addition of 1.0% (v/v) soybean oil concentrate (SBOC), 0.1% (v/v) oxysorbic (20 POE) (polyoxyethylene sorbitan monolaurate) (OXY), or no adjuvant (NONE). The least amount of 14C absorption occurred in the treatment containing OXY. Absorption and translocation of radioactivity were significantly greater at 70% RH than at 30% RH. Thin-layer chromatography revealed that most of the 14C recovered from treated plants was in haloxyfop-methyl 5 h after treatment (HAT). The remaining 14C recovered was haloxyfop and an unidentified polar metabolite. The average percentage of 14C-haloxyfop in the nonabsorbed fraction was 5, 39, 7, and 7% for treatments containing NONE, OXY, POC, and SBOC, respectively. The ratio of haloxyfop-methyl to haloxyfop and the percentage of polar metabolite in the absorbed 14C fraction was not different among adjuvant treatments or between levels of RH.



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1. Barrentine, W. L. and McWhorter, C. G. 1985. Oil carriers for herbicides applied postemergence to Johnsongrass. Abstr. Weed Sci. Soc. Am. Page 4.
2. Boldt, P. F. and Putnam, A. R. 1980. Selectivity mechanisms for foliar applications of diclofop-methyl. I. Retention, absorption, translocation, and volatility. Weed Sci. 28:474477.
3. Boldt, P. F. and Putnam, A. R. 1981. Selectivity mechanisms for foliar applications of diclofop-methyl. II. Metabolism. Weed Sci. 29:237241.
4. Buhler, D. D., Swisher, B. A., and Burnside, O. C. 1985. Behavior of 14C-haloxyfop-methyl in intact plants and cell cultures. Weed Sci. 33:291299.
5. Chen, Yong-Zheng and Penner, D. 1985. Combination effects of acifluorfen with crop oil concentrates and postemergence grass herbicides. Weed Sci. 33:9195.
6. Coats, G. E. and Foy, C. L. 1974. Effects of atrazine-phytobland oil combinations on 14CO2-fixation and transpiration. Weed Sci. 22:215220.
7. Coats, G. E. and Foy, C. L. 1974. Effect of petroleum oils on the uptake of atrazine-14C by corn. Weed Sci. 22:220226.
8. Coffman, C. B. and Gentner, W. A. 1984. Soybean oil concentrate applications on selected plant species. Abstr. Weed Sci. Soc. Am. Page 12.
9. Dow Chemical Company. 1984. Technical information bulletin. Agric. Products Dep., Dow Chemical Co., Midland, MI. 11 pp.
10. Harrison, S. K. and Wax, L. M. 1983. Soybean and petroleum oil concentrates as adjuvants for postemergence herbicides. Proc. North Cent. Weed Control Conf. 38:1112.
11. Hatzios, K. K. and Penner, D. 1982. Metabolism of herbicides in higher plants. Burgess Publishing Co., Minneapolis. 142 pp.
12. Jain, R. and Vanden Born, W. H. 1983. Morphological and histological effects of sethoxydim, fluazifop-butyl, and Dowco 453 on wild oats (Avena fatua). Abstr. Weed Sci. Soc. Am. Page 73.
13. Hendley, P., Dicks, J. W., Monaco, T. J., Slyfield, S. M., Tummon, O. J., and Barrett, J. C. 1985. Translocation and metabolism of pyridinyloxyphenoxypropionate herbicides in rhizomatous quackgrass (Agropyron repens). Weed Sci. 33:1124.
14. Kells, J. J., Meggitt, W. F., and Penner, D. 1984. Absorption, translocation, and activity of fluazifop-butyl as influenced by plant growth stage and environment. Weed Sci. 32:143149.
15. McWhorter, C. G. 1979. The effect of surfactant and environment on the toxicity of metriflufen to soybeans (Glycine max) and johnsongrass (Sorghum halepense). Weed Sci. 27:675679.
16. McWhorter, C. G. 1981. Effect of temperature and relative humidity on translocation of 14C-metriflufen in johnsongrass (Sorghum halepense) and soybean (Glycine max). Weed Sci. 29:8793.
17. Nalewaja, J. D., Pudelko, J., and Adamczewski, K. A. 1975. Influence of climate and additives on bentazon. Weed Sci. 23:504–407.
18. Nalewaja, J. D. and Adamczewski, K. A. 1977. Uptake and translocation of bentazon with additives. Weed Sci. 25:309315.
19. Oliver, L. R., Banks, V. E., and Walker, J. T. 1984. Soybean oil as a carrier for postemergence herbicides. Abstr. Weed Sci. Soc. Am. Page 12.
20. Smith, A. E. 1976. Esterification of the hydrolysis product of the herbicide diclofop-methyl in methanol. J. Agric. Food Chem. 24:10771078.
21. Steel, R.G.D. and Torrie, J. H. 1980. Principles and Procedures of Statistics – A Biometrical Approach. 2nd ed. McGraw-Hill Book Co., New York. 633 pp.
22. Velovitch, J. J. and Slife, F. W. 1983. Uptake, translocation, and metabolism of fluazifop-butyl in foxtail millet [Setaria italica (L.) Beauv.] and common cocklebur (Xanthium pensylvanicum Wallr.). Abstr, Weed Sci. Soc. Am. Page 74.
23. Wills, G. D. 1984. Toxicity and translocation of sethoxydim in bermudagrass (Cynodon dactylon) as affected by environment. Weed Sci. 32:2024.


Adjuvant Effects on Absorption, Translocation, and Metabolism of Haloxyfop-Methyl in Corn (Zea mays)

  • S. Kent Harrison (a1) and Loyd M. Wax (a2)


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