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Uptake and Distribution of Simazine by Oat and Cotton Seedlings

  • T. J. Sheets (a1) (a2)

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For most effective weed control 2–chloro–4,6–bis(ethylamino)–s–triazine (simazine) must be applied to the soil. As a foliar spray it is much less effective. Simazine penetrates into leaves of some plants, but apparently the cuticle is a barrier to foliar absorption of this herbicide. It is absorbed rapidly by roots and is transported upward to the aerial plant parts.

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1. Bartley, Clayton. Simazine and related triazines as herbicides. Agricultural Chemicals 12(5):3436, 113–115. 1957.
2. Brouwer, R. The regulating influence of transpiration and suction tension on the water and salt uptake by the roots of intact Vicia faba plants. Acta Botanica Neerlandica 3:264312. 1954.
3. Burchfield, H. P. Studies on the relationship between chemical structure and biological activity of the s-triazines. Trans. N. Y. Acad. Sci. 18:550554. 1956.
4. Burchfield, H. P. and Storrs, E. E. Chemical structures and dissociation constants of amino acids, peptides, and proteins in relation to their reaction rates with 2,4–dichloro–6-(o–chloroanilino)-s-triazine. Contrib. Boyce Thompson Inst. 18:395418. 1956.
5. Davis, D. E., Funderburk, H. H. Jr., and Sansing, N. G. The absorption and translocation of C14–labeled simazine by corn, cotton, and cucumber. Weeds 7:300309. 1959.
6. Exer, B. Der Einfluss von Simazin auf den Pflanzenstoffwechsel. Experientia 14:135. 1958.
7. Foy, C. L. The adaptation of qualitative and quantitative techniques for determination of radioactive dalapon in plant tissues. Hilgardia (in press).
8. Gysin, H., and Knüsli, E. Activity and mode of action of triazine herbicides. Proc. British Weed Control Conf. 4:225233. 1958.
9. Hoagland, D. R., and Arnon, D. I. The water culture method for growing plants without soil. California Agri. Expt. Sta. Cir. 347. 1950.
10. Hylmö, B. Transpiration and ion absorption. Physiol. Plantarum 6:333405. 1953.
11. Minshall, W. H. Translocation path and place of action of 3–(4–chlorophenyl)–1,1–dimethylurea in bean and tomato. Canadian Jour. Bot. 32:795798. 1954.
12. Montgomery, M., and Freed, V. H. The uptake and metabolism (of) simazine and atrazine by corn plants (abstract). Res. Prog. Report, WWCC, pp. 9394. 1959.
13. Moreland, D. E., Gentner, W. A., Hilton, J. L., and Hill, K. L. Studies on the mechanism of herbicidal action of 2–chloro–4,6–bis (ethylamino)–s–triazine. Plant Physiol. 34:432435. 1959.
14. Roth, M. W. Etude comparée de la réaction du Mais et du Blé à la Simazin, substance herbicide. Compt. rend. acad. sci. 245:942944. 1957.
15. Sheets, T. J. The comparative toxicities of monuron and simazin in soil. Weeds 7:189194. 1959.
16. Yamaguchi, S., and Crafts, A. S. Autoradiographic method for studying absorption and translocation of herbicides using C14–labeled compounds. Hilgardia 28:161191. 1958.

Uptake and Distribution of Simazine by Oat and Cotton Seedlings

  • T. J. Sheets (a1) (a2)

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