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Effects of Low Concentrations of Herbicides on Submersed Aquatic Plants

Published online by Cambridge University Press:  12 June 2017

D. Raymond Forney
Affiliation:
Dep. Plant Path. And Physiol., VPI and SU, Blacksburg, VA 24060
Donald E. Davis
Affiliation:
Dep. Bot., Plant Path., and Microbiol., Auburn Univ., Auburn, AL 36849

Abstract

Laboratory studies were conducted to investigate the possibility that herbicide runoff from treated fields might be adversely affecting submersed aquatic plants in the Chesapeake Bay. In laboratory studies, I1 and I50 values (the concentrations inhibiting growth 1 and 50%, respectively) were calculated for three herbicides and several aquatic plants. Exposure periods varied from 3 to 6 weeks, with the 3-week exposure being most common. For atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine], I1 values were usually a few parts per billion (ppb), whereas I50 values varied from ca. 80 ppb for elodea (Elodea canadensis Michx) to ca. 1040 ppb for Eurasian watermilfoil (Myriophyllum spicatum L.). The toxicity of metribuzin [4-amino-6-tert-butyl-3-(methylthio)-as-triazin-5(4H)-one] was similar to that of atrazine. Glyphosate [N-(phosphonomethyl)glycine] was essentially non-toxic. Interactions between salinity and atrazine were studied using the brackish water species, vallisneria (Vallisneria americana Michx.). Increasing salinity did not affect atrazine toxicity. When atrazine was present in both the hydrosoil and water, the concentration in the water determined the toxicity. At concentrations below 1000 ppb, atrazine in the hydrosoil did not adversely affect the plants. Based on the results of these studies, and the known concentrations of herbicides in runoff water, these herbicides do not appear to pose any threat to the species tested.

Type
Research Article
Copyright
Copyright © 1981 by the Weed Science Society of America 

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References

Literature Cited

1. Alabama Coop. Ext. Serv. 1979. Weed control in lakes and farm ponds. ANR-48, Auburn Univ., Auburn, AL. 6 pp.Google Scholar
2. Applied Biochemists, Inc. 1979. Water weeds and algae (how to identify and control). Mequon, WI. 64 pp.Google Scholar
3. Armstrong, D. E. and Chesters, G. 1968. Adsorption catalyzed chemical hydrolysis of atrazine. Environ. Sci. Technol. 2:683689.CrossRefGoogle Scholar
4. Correll, D. L. and Pierce, J. W. 1978. Studies of the transport of atrazine and alachlor from minimum till cornfields into Chesapeake Bay tidal waters. Proc. Northeast. Weed Sci. Soc. 32:3132.Google Scholar
5. Correll, D. L., Pierce, J. W., and Wu, T. L. 1978. Herbicides and submerged plants in the Chesapeake Bay. Pages 858877 in Proc. Symp. on Technical, Environmental, Socio-economical, and Regulatory Aspects of Coastal Zone Management. Am. Soc. Civ. Eng. pp. 858877.Google Scholar
6. Ebert, E. and Dumford, S. W. 1976. Effects of triazine herbicides on the physiology of plants. Residue Rev. 65:1103.Google Scholar
7. EPA. 1978. Forum report – herbicides in the Chesapeake Bay. EPA Chesapeake Bay Program Citizens Steering Committee. Hampton, VA. 67 pp.Google Scholar
8. Evans, D. M. 1978. Aquatic weed control with the isopropylamine salt of N-(phosphonomethyl)glycine. Weed Abst. 29:22.Google Scholar
9. Funderburk, H. H. Jr. and Lawrence, J. M. 1963. Absorption and translocation of radioactive herbicides in submersed and emersed weeds. Weed Res. 3:304311.Google Scholar
10. Hormann, W. D., Tournayre, J. C., and Egli, H. 1979. Triazine herbicide residues in central European streams. Pestic. Monit. J. 13:128131.Google Scholar
11. Kolessar, M. A. 1967. Aquatic plants in Maryland – a growing menace. J. Waterways and Harbors Div., Proc. Am. Soc. Civ. Eng. 93:17.Google Scholar
12. Lin, L. C., and Cedeno Maldonado, A. 1980. A bioassay method for detecting herbicide concentrations in water. Weed Abst. 29:41.Google Scholar
13. McEnerney, J. T. and Davis, D. E. 1979. Metabolic fate of atrazine in the Spartina alterniflora – detritus – Uca pugnax food chain. J. Environ. Qual. 8:335338.Google Scholar
14. McGlamery, M. D. and Slife, F. G. 1966. The adsorption and desorption of atrazine as affected by pH, temperature, and concentration. Weeds 14:237239.Google Scholar
15. Milne, L. R. and Milne, M. J. 1951. The eelgrass castastrophe. Sci. Am. 184:5255.Google Scholar
16. Moyer, J. R. 1972. Some aspects of adsorption and desorption of herbicides with soil colloids. Diss. Abstr. Int. 33:981B982B.Google Scholar
17. Muir, D. C. D. 1978. The determination of triazine-herbicides and their degradation products in soils and water from Quebec agricultural regions. Diss. Abst. Int. 38:3164B.Google Scholar
18. Newby, L. C., Kahrs, R. A., Adams, K., and Szolics, M. 1978. Atrazine residues in the Chesapeake Bay. Proc. Northeast. Weed Sci. Soc. 32:339. (Abstr.) Google Scholar
19. Peverly, J. H. and Crawford, T. W. Jr. 1975. Glyphosate as an herbicide for two submerged aquatic weed species, Myriophyllum spicatum, Potamogeton crispus . Proc. Northeast. Weed Control Conf. 29:109–107.Google Scholar
20. Pillai, C. G. P., Weete, J. D., and Davis, D. E. 1977. Metabolism of atrazine by Spartina alterniflora. 1. Chloroform soluble metabolites. J. Agric. Food Chem. 25:852855.Google Scholar
21. Stevenson, J. C. and Confer, N. M. 1978. Summary of available information on Chesapeake Bay submerged vegetation. Fish and Wildlife Serv., U.S. Dep. Interior, Washington, DC. 335 pp.Google Scholar
22. Stevenson, J. C., Confer, N. M., and Pieper, C. B. 1979. The decline of submerged plants in Chesapeake Bay. Fish and Wildlife Serv., U.S. Dep. Interior, Washington, DC. 12 pp.Google Scholar
23. Wauchope, R. D. 1978. The pesticide content of surface water draining from agricultural fields – a review. J. Environ. Qual. 7:459472.Google Scholar
24. Wauchope, R. D., Savage, K. E., and Hollingworth, E. B. 1977. Trifluralin, metribuzin, and MSMA in surface runoff from a Mississippi delta field. Proc. Weed Sci. Soc. Am. 30:168 (Abstr.) Google Scholar
25. Weed Science Society of America. 1979. Herbicide Handbook of the Weed Science Society of America, fourth edition. WSSA, Champaign, IL. 479 pp.Google Scholar
26. Wu, T. L., Lambert, L., Hastings, D., and Banning, D. 1980. Enrichment of the agricultural herbicide atrazine in the microsurface water of an estuary. Bull. Environ. Contam. Toxicol. 24:411414.Google Scholar