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Protection of Corn (Zea mays) and Sorghum (Sorghum bicolor) from Imazethapyr Toxicity with Antidotes

  • Michael Barrett (a1)

Abstract

Antidotes were evaluated under greenhouse conditions for their ability to prevent injury to corn and sorghum from imazethapyr. Corn was more tolerant to imazethapyr and more effectively protected from imazethapyr toxicity than sorghum. Naphthalic anhydride (NA)3, CGA 92194, or flurazole treatment of corn seed reduced plant injury from preemergence applications of imazethapyr. Corn injury from postemergence applications of imazethapyr was decreased by seed treatment with NA or CGA 92194. Sorghum injury from preemergence applications of imazethapyr was not reduced by seed treatment with the antidotes. NA treatment of sorghum seed was the most effective antidote treatment for decreasing injury from postemergence applications of imazethapyr but the level of sorghum protection was much less than that achieved with corn. Corn seedlings grown from NA-treated and untreated seed absorbed equal amounts of 14C into the roots from nutrient solution containing 14C-imazethapyr. The NA-treated corn plants translocated less of the absorbed 14C to the shoots than the untreated plants. NA treatment of corn seeds increased the rate of imazethapyr conversion to soluble metabolites 2-and 10-fold in the corn seedling roots and shoots, respectively. The increased rate of imazethapyr metabolism in corn following NA seed treatment may be responsible for the protection from imazethapyr toxicity.

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1. Anonymous. 1983. Herbicide Handbook of the Weed Science Society of America. 5th ed. Weed Sci. Soc. Am., Champaign, IL. Pages 335337 and 242–244.
2. Anderson, P. C. and Hibberd, K. A. 1985. Evidence for the interaction of an imidazolinone herbicide with leucine, valine, and isoleucine metabolism. Weed Sci. 33:479483.
3. Anderson, P. C. and Georgson, M. 1986. Selection of an imidazolinone tolerant mutant of corn. Page 437 in Somers, D. A., Gengenbach, B. G., Biesboer, D. D., Hackett, W. P., and Green, C. E., eds. “VI International Congress of Plant Tissue and Cell Culture Abstracts”. Univ. Minnesota, Minneapolis, MN.
4. Barrett, M. Reduction of imazaquin injury to corn (Zea mays) and sorghum (Sorghum bicolor) with antidotes. Weed Sci. (In press).
5. Brown, M. A., Chiu, T. Y., and Miller, P. 1987. Hydrolytic activation versus oxidative degradation of assert herbicide, an imidazolinone aryl-carboxylate, in susceptible wild oat versus tolerant corn and wheat. Pestic. Biochem. Physiol. 27:2429.
6. Eastin, E. F. 1972. Evaluation of a sorghum seed treatment to prevent injury from acetanilide herbicides. Agron. J. 64: 556557.
7. Frear, D. S., Swanson, H. R., and Mansager, E. R. 1987. 1,8-naphthalic anhydride/auxin protection against chlorsulfuron inhibition of corn seedling growth. Pages 161168 in Greenhalgh, R. and Roberts, T. R., eds. Pesticide Science and Biotechnology. Blackwell Scientific Publications, Oxford.
8. Fuerst, E. P. and Gronwald, J. W. 1986. Induction of rapid metabolism of metachlor in sorghum (Sorghum bicolor) shoots by CGA-92194 and other antidotes. Weed Sci. 34:354361.
9. Mills, J. A. 1988. Effects of soybean tillage systems on the efficacy, phytotoxicity, and persistence of imazaquin, imazethapyr, and clomazone. Ph.D. Dissertation, Univ. Kentucky. Pages 5274.
10. Maynard, D. N. and Barker, A. V. 1970. Nutriculture: A guide to the soilless culture of plants. Coop. Ext. Serv., Univ. Massachusetts, Amherst, Publ. 41.
11. Renner, K. A., Meggitt, W. F., and Penner, D. 1988. Effect of soil pH on imazaquin and imazethapyr adsorption to soil and phytotoxicity to corn (Zea mays). Weed Sci. 36:7883.
12. Shaner, D. L. and Robson, P. A. 1985. Absorption, translocation and metabolism of AC 252,214 in soybean (Glycine max), common cocklebur (Xanthium strumarium), and velvetleaf (Abutilon theophrasti). Weed Sci. 33:469471.
13. Shaner, D. L., Anderson, P. C., and Stidham, M. A. 1984. Imidazolinones potent inhibitors of acetohydroxyacid synthase. Plant Physiol. 76:545546.
14. Shimabukuro, R. H. 1985. Detoxication of herbicides. Pages 215240 in Duke, S. O., ed. Weed Physiology Vol. II: Herbicide Physiology. CRC Press, Boca Raton, FL.
15. Sweetser, P. B. 1985. Safening of sulfonylurea herbicides to cereal crops: Mode of herbicide antidote action. Proc. 1985 Br. Crop Prot. Conf.—Weeds: 11471154.

Keywords

Protection of Corn (Zea mays) and Sorghum (Sorghum bicolor) from Imazethapyr Toxicity with Antidotes

  • Michael Barrett (a1)

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