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Monitoring Photosynthesis to Measure Translocation of Bentazon in Common Cocklebur

Published online by Cambridge University Press:  12 June 2017

J.R. Potter*
Affiliation:
Ornamental Plants Res. Lab., Agric. Res. Serv., U.S. Dep. Agric., Corvallis, OR 97330

Abstract

The movement of biologically active levels of bentazon [3-isopropyl-1H-2,1,3-benzothiadiazin-(4) 3H-one 2,2-dioxide] was followed by monitoring photosynthetic activity of plant parts after application of the herbicide. Bentazon was applied to roots, stems, petioles, portions of the canopy, and portions of individual leaves of 4- to 24-day-old common cocklebur (Xanthium pensylvanicum Wallr.) at rates comparable to field application rates. Application of bentazon anywhere on the plant either slowed or stopped photosynthesis in leaves acropetal to the point of application. Contact of bentazon with stems, petioles or roots contributed to the phytotoxicity of the herbicide.

Type
Research Article
Copyright
Copyright © 1977 by the Weed Science Society of America 

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References

Literature Cited

1. Mahoney, M.D. and Penner, D. 1975. Bentazon translocation and metabolism in soybean and navy bean. Weed Sci. 23:265271.Google Scholar
2. Mahoney, M.D. and Penner, D. 1975. The basis for bentazon selectivity in navy bean, cocklebur, and black nightshade. Weed Sci. 23:272276.CrossRefGoogle Scholar
3. Mine, A., Miyakado, M., and Matsunaka, S. 1975. The mechanism of bentazon selectivity. Pestic. Biochem. Physiol. 5:566574.CrossRefGoogle Scholar
4. Mine, A., Matsunaka, S., Hino, N., and Ueda, M. 1974. Studies on the herbicidal properties of bentazon under paddy field conditions. II. Absorption and translocation in plants and behaviour in soil. Zasso Kenkyu. 18:510.CrossRefGoogle Scholar
5. Mine, A. and Matsunaka, S. 1975. Mode of action of bentazon: Effect on photosynthesis. Pestic. Biochem. Physiol. 5:444450.CrossRefGoogle Scholar
6. Penner, D. 1975. Bentazone selectivity between soybean and Canada thistle. Weed Res. 15:259262.Google Scholar
7. Potter, J.R. and Wergin, W.P. 1975. The role of light in bentazon toxicity to cocklebur: Physiology and ultrastructure. Pestic. Biochem. Physiol. 5:458470.Google Scholar
8. Retzlaff, G. und Fischer, A. 1973. Die Beeinflussung der Assimilation verschiedener Pflanzen durch Bentazon im Vergleich zur Selektivität, Mitt. Biol. Bundesanst. Land Forstwirtsch. 151:179180.Google Scholar
9. van Oorschot, J.L.P. 1970. Influence of herbicides on photosynthetic activity and transpiration rate of intact plants. Pestic. Sci. 1:3337.Google Scholar
10. Wareing, P.F., Khalifa, M.M., and Treharne, K.J. 1968. Rate limiting processes in photosynthesis at saturating light intensities. Nature 220:453457.CrossRefGoogle ScholarPubMed
11. Wergin, W.P. and Potter, J.R. 1975. The effects of fluometuron on the ultrastructural development, chlorophyll accumulation and photosynthetic competence in developing velvetleaf seedlings. Pestic. Biochem. Physiol. 5:265279.Google Scholar
12. Wills, G.D. and McWhorter, C.G. 1972. Effect of temperature, relative humidity and soil moisture on translocation of bentazon in cocklebur, nutsedge, and soybean plants. Proc. South. Weed Sci. Soc. 25:415419.Google Scholar
13. Wills, G.D. 1976. Translocation of bentazon in soybeans and common cocklebur. Weed Sci. 24:536540.Google Scholar
14. Zaunbrecher, S.J. and Rogers, R.L. 1972. A study of the herbicidal activity of BASF-3512-H. Proc. South. Weed Sci. Soc. 25:107.Google Scholar
15. Zaunbrecher, S.J. and Rogers, R.L. 1973. Absorption and translocation of 14C-bentazon (BAS-351-H) by soybean and cocklebur. Proc. South. Weed Sci. Soc. 26:379.Google Scholar