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Sensitivity of Tobacco (Nicotiana tabacum) and Vegetable Crop Seedlings to Fluridone in Irrigation Water

Published online by Cambridge University Press:  12 June 2017

Stratford H. Kay
Affiliation:
Dep. Crop Sci. and Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695
David W. Monks
Affiliation:
Dep. Crop Sci. and Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695
Steve T. Hoyle
Affiliation:
Dep. Crop Sci. and Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695
Darren K. Robinson
Affiliation:
Dep. Crop Sci. and Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695

Abstract

The sensitivities of tobacco, tomato, pepper, and cucumber seedlings to an aquatic herbicide, fluridone, were examined in growth chamber and greenhouse studies. New leaves of tobacco seedlings became chlorotic after 6-d exposure to fluridone concentrations of 5 μg/L or greater in hydroponic float culture, and dry weights were significantly reduced at 100 μg/L or greater. When treated only once at the beginning of a 2-wk evaluation period, all crops except cucumber exhibited injury symptoms at 100 μg/L. When grown in sand, pepper and tomato were injured at 25 μg/L; tobacco injury occurred at 10 μg/L. Dry weights of pepper, tobacco, and tomato seedlings decreased significantly at 250, 50, and 250 μg/L, respectively, on potting mix; effects on dry weights were not significant for plants on sand. Cucumber was injured by treatment at 100 μg/L or greater in sand, but there were no effects on dry weights in either sand or potting mix. When treated three times weekly for 2 wk with fluridone, pepper, tobacco, and tomato grown in potting mix were injured by 50, 25, and 100 μg/L; when grown in sand, injury occurred at 10, 5, and 10 μg/L, respectively. Dry weights of pepper, tobacco, and tomato were reduced by 50,50, and 100 μg/L, respectively, in potting mix; effects on dry weights were not significant for plants in sand. Cucumber seedlings were damaged by 250 μg/L or higher on potting mix and 100 μg/L or higher on sand, but there were no effects on dry weights regardless of substrate. Threshold injury levels for plants grown in potting mix to the second true leaf stage and then treated three times weekly were 25 μg/L for pepper and tobacco and 50 μg/L for tomato; dry weights were significantly reduced in pepper at 25 μg/L and in tobacco and tomato at 50 μg/L. Cucumber seedlings were not injured by any treatment in this test.

Type
Research
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

Literature Cited

1. Albritton, R. and Parka, S. J. 1978. Studies evaluating the site of fluridone uptake by fourteen crop and ten weed species. Proc. South. Weed Sci. Soc. 31:253259.Google Scholar
2. Baur, J. R., Bovey, R. W., and Veech, J. A. 1977. Growth responses in sorghum and wheat induced by glyphosate. Weed Sci. 25:238240.CrossRefGoogle Scholar
3. Drexler, D. M. and Fletcher, R. A. 1981. Inhibition of photosynthetic pigments in cucumber cotyledons as a principle for a bioassay with fluridone. Weed Res. 21:7176.Google Scholar
4. Elanco. 1987. Sonar Herbicide Specimen Label. Elanco Products Company, Indianapolis, IN. 14 p.Google Scholar
5. Grant, D. L., Warner, L. C., Arnold, W. R., and West, S. D. 1979. Fluridone for aquatic plant management systems. Proc. South. Weed Sci. Soc. 32:293298.Google Scholar
6. Kay, S. H. 1990. A sensitive bioassay for fluridone in irrigation water. Proc. South. Weed Sci, Soc. 43:320.Google Scholar
7. Kay, S. H. 1991. Efficacy of early-season fluridone treatment for management of watermeal, Wolffia columbiana Karst. J. Aquat. Plant Manage. 29:4245.Google Scholar
8. Kay, S. H. 1992. Response of two alligatorweed biotypes to quinclorac. J. Aquat. Plant Manage. 30:3540.Google Scholar
9. Koren, E. 1979. Fluridone—A new selective herbicide. Phytoparasitica 7:144.Google Scholar
10. Muir, D. C. G. and Grift, N. P. 1982. Fate of fluridone in sediment and water in laboratory and field experiments. J. Agric. Food Chem. 30:238244.CrossRefGoogle Scholar
11. Muir, D. C. G., Grift, N. P., Blouw, A. P., and Lockhart, W. L. 1980. Persistence of fluridone in small ponds. J. Environ. Qual. 9:151156.CrossRefGoogle Scholar
12. Rivera, C. M., West, S. D., and Perez, J. 1979. Fluridone: An experimental herbicide for aquatic plant management systems. Proc. West. Soc. Weed Sci. 32:6773.Google Scholar
13. Rodrigues, J. J. V., Worsham, A. D., and Corbin, F. T. 1982. Exudation of glyphosate from wheat (Triticum aestivum) plants and its effects on inter-planted corn (Zea mays) and soybeans (Glycine max). Weed Sci. 30:316320.CrossRefGoogle Scholar
14. Ross, M. A. and Lembi, C. A. 1985. Chapter 5, The plant system and weed control. P. 6288 in Applied Weed Science, Macmillan Publ. Co., New York.Google Scholar
15. Saunders, D. G. and Mosier, J. W. 1983. Photolysis of the aquatic herbicide fluridone in aqueous solutions. J. Agric. Food Chem. 31:237241.CrossRefGoogle Scholar
16. Shea, P. J. and Weber, J. B. 1980. Effect of pH and soil constituents on the persistence and availability of fluridone. Proc. South. Weed Sci. Soc. 33:240246.Google Scholar
17. Shea, P. J. and Weber, J. B. 1983. Fluridone adsorption on mineral clays, organic matter, and modified Norfolk soil. Weed Sci. 31:528532.CrossRefGoogle Scholar
18. Weber, J. B. 1980. Adsorption of buthidazole, VEL 3510, tebuthiuron, and fluridone by organic matter, montmorillonite clay, exchange resins, and a sandy loam soil. Weed Sci. 28:478483.CrossRefGoogle Scholar
19. Weber, J. B., Shea, P. J., and Weed, S.B. 1986. Fluridone retention and release in soils. Soil Sci. Soc. Am. J., 50:582588.CrossRefGoogle Scholar
20. Webster, H. L., Grant, D. L., Cooper, R. B., Addison, D. A., Banks, J. C., and Warner, L. C. 1979. Fluridone for perennial weed control in cotton. Proc. South. Weed Sci. Soc. 32:7077.Google Scholar
21. West, S. D., Day, E. W., and Burger, R. O. 1979. Dissipation of the experimental aquatic herbicide fluridone from lakes and ponds. J. Agric. Food Chem. 27:10671072.CrossRefGoogle ScholarPubMed
22. West, S. D., Burger, R. O., Poole, G. M., and Mowrey, D. H. 1983. Bioconcentration and field dissipation of the aquatic herbicide fluridone and its degradation products in aquatic environments. J. Agric. Food Chem. 31:579585.CrossRefGoogle Scholar
23. West, S. D. and Parka, S. J. 1981. Determination of the aquatic herbicide fluridone in water and hydrosoil: Effect of application method on dissipation. J. Agric. Food Chem. 29:223226.CrossRefGoogle Scholar