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Effects of Starch Encapsulation on Clomazone and Atrazine Movement in Soil and Clomazone Volatilization

  • Todd L. Mervosh (a1), Edward W. Stoller (a2), F. William Simmons (a3), Timothy R. Ellsworth (a3) and Gerald K. Sims (a4)...

Abstract

The effects of formulation on clomazone volatilization and transport through soil were studied. After 22 days of leaching under unsaturated flow in 49-cm long intact soil cores, greater clomazone movement was observed in Plainfield sand than in Cisne silt loam or Drummer silty clay loam soils. Soil clomazone concentrations resulting in injury to oats occurred throughout Plainfield soil cores but were restricted to the upper 14 cm of Cisne and Drummer soils. In addition, clomazone was detected in the leachate from Plainfield soil only. In a similar study with Plainfield sand cores, clomazone was less mobile than atrazine; encapsulation of the herbicides in starch granules did not affect clomazone movement but greatly decreased atrazine movement from the soil surface. Similarly, starch encapsulation did not affect bioavailability of clomazone but did reduce bioavailability of atrazine. In a laboratory study with continual air flow, volatilization of clomazone applied to the soil surface was reduced by encapsulation in starch and starch/clay granules. Clomazone volatilization was not affected by soil water content within a range of 33 to 1500 kPa water tension. Following soil saturation with water, clomazone volatilization from both liquid and granular formulations increased. Granule size appeared to have a greater impact than granule composition on clomazone volatilization.

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2 Corresponding author, current address, Connecticut Agric. Exp. Stn., Valley Lab., Box 248, Windsor, CT 06095.

References

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1. Carr, M. E., Wing, R. E., and Doane, W. M. 1991. Encapsulation of atrazine within a starch matrix by extrusion processing. Cereal Chem. 68:262266.
2. Curran, W. S., Liebl, R. A., and Simmons, F. W. 1992. Effects of tillage and application method on clomazone, imazaquin, and imazethapyr persistence. Weed Sci. 40:482489.
3. Dewell, R. A. 1993. M.S. Thesis, University of Illinois, Urbana, IL. 53 pp.
4. Fleming, G. F., Simmons, F. W., Wax, L. M., Wing, R. E., and Carr, M. E. 1992. Atrazine movement in soil columns as influenced by starch-encapsulation and acrylic polymer additives. Weed Sci. 40:465470.
5. Fleming, G. F., Wax, L. M., and Simmons, F. W. 1992. Leachability and efficacy of starch-encapsulated atrazine. Weed Technol. 6:297302.
6. FMC Corporation. 1994. Command 4EC Herbicide Label. Page 920933 in Crop Protection Chemicals Reference, 10th ed.; Chemical and Pharmaceutical Press, New York.
7. Gish, T. J., Schoppet, M. J., Helling, C. S., Shirmohammadi, A., Schreiber, M. M., and Wing, R. E. 1991. Transport comparison of technical grade and starch-encapsulated atrazine. Trans. Amer. Soc. Agric. Engin. 34:17381744.
8. Hassett, J. J. and Banwart, W. L. 1989. The sorption of nonpolar organics by soils and sediments. Page 3144 in Reactions and Movement of Organic Chemicals in Soils; Sawhney, B. L. and Brown, K., eds.; Soil Sci. Soc. Amer. and Amer. Soc. Agron.; Madison, WI.
9. Loux, M. M. 1984. M.S. Thesis, University of Illinois, Urbana, IL. 104 pp.
10. Loux, M. M., Liebl, R. A., and Slife, F. W. 1989. Availability and persistence of imazaquin, imazethapyr, and clomazone in soil. Weed Sci. 37:259267.
11. Loux, M. M., Liebl, R. A., and Slife, F. W. 1989. Adsorption of clomazone on soils, sediments, and clays. Weed Sci. 37:440444.
12. Mervosh, T. L., Sims, G. K., and Soller, E. W. 1995. Clomazone fate as affected by microbial activity, temperature, and soil moisture. J. Agric. Food Chem. 43:537543.
13. Mervosh, T. L. 1994. Ph.D. Dissertation, Univ. of Illinois, Urbana, IL, 89 pp.
14. Mills, M. S. and Thurman, E. M. 1994. Reduction of nonpoint source contamination of surface water and groundwater by starch encapsulation of herbicides. Environ. Sci. Technol. 28:7379.
15. Mills, J. A., Witt, W. W., and Barrett, M. 1989. Effects of tillage on the efficacy and persistence of clomazone in soybean (Glycine max). Weed Sci. 37:217222.
16. Rao, P.S.C. and Hornsby, A. G. 1989. Behavior of pesticides in soils and water. Soil Science Fact Sheet, SL40. University of Florida, Gainesville, FL. 4 pp.
17. Richard, J. J., Junk, G. A., Avery, M. J., Nehring, N. L., Fritz, J. S., and Svec, H. J. 1975. Analysis of various Iowa waters for selected pesticides: atrazine, DDE, and dieldrin—1974. Pestic. Monit. J. 9(3):117123.
18. Ritter, W. F. 1986. Pesticide contamination of groundwater—a review. Amer. Soc. Agric. Engin. Paper No. 86–2028. Amer. Soc. Agric. Engin., St. Joseph, MO, 25 pp.
19. Schreiber, M. M., Shasha, B. S., Ross, M. A., Orwick, P. L., and Edgecomb, D. W. Jr. 1978. Efficacy and rate of release of EPTC and butylate from starch encapsulated formulations under greenhouse conditions. Weed Sci. 26:679686.
20. Schreiber, M. M., Shasha, B. S., Trimnell, D., and White, M. D. 1987. Controlled release herbicides. Page 177191 in Methods of Applying Herbicides; McWhorter, C. G. and Gebhardt, M. R., eds.; Weed Sci. Soc. Amer., Champaign, IL.
21. Shasha, B. S., Doane, W. M., and Russell, C. R. 1976. Starch encapsulated pesticides for slow release. J. Polym. Sci. 14:417420.
22. Thelen, K. D., Kells, J. J., and Penner, D. 1988. Comparison of application methods and tillage practices on volatilization of clomazone. Weed Technol. 2:323326.
23. Trimnell, D. and Shasha, B. S. 1990. Controlled release formulations of atrazine in starch for potential reduction of groundwater pollution. J. Controlled Release 12:251256.
24. U.S. Environmental Protection Agency. 1987. Agricultural Chemicals in Ground Water: Proposed Pesticide Strategy. U.S.E.P.A. Office of Pesticides and Toxic Substances: Washington, D.C. 150 pp.
25. van Genuchten, M. Th. and Cleary, R. W. 1979. Movement of solutes in soil: Computer-simulated and laboratory results. Page 349386 in Bolt, G. H. ed Soil Chemistry, B. Physicochemical models. Elsevier, Amsterdam.
26. Wauchope, D. R., Glaze, N. C., and Dowler, C. C. 1990. Mobility and efficacy of controlled-release formulations of atrazine. Abstr. Weed Sci. Soc. Amer. 30:216.
27. Weed Science Society of America. 1994. Atrazine. Pages 2023 in Ahrens, W. H., ed. Herbicide Handbook, 7th ed.; Weed Sci. Soc. Amer., Champaign, IL.
28. Weed Science Society of America. 1994. Clomazone. Pages 6466 in Ahrens, W. H., ed. Herbicide Handbook, 7th ed.; Weed Sci. Soc. Amer., Champaign, IL.
29. Wienhold, B. J., Sadeghi, A. M., and Gish, T. J. 1993. Effect of starch encapsulation and temperature on volatilization of atrazine and alachlor. J. Environ. Qual. 22:162166.
30. Wing, R. E., Carr, M. E., and Doane, W. M. 1993. Continuous process for starch encapsulated herbicides. In Pesticide Formulations and Application Systems, vol. 13, ASTM 1183; Berger, P. D., Devissetty, B. N., and Hall, F. R., eds.; Amer. Soc. for Testing and Materials, Philadelphia, PA.
31. Wing, R. E., Maiti, S., and Doane, W. M. 1987. Effectiveness of jet-cooked pearl cornstarch as a controlled release matrix. Starch/Stärke 39:422425.

Keywords

Effects of Starch Encapsulation on Clomazone and Atrazine Movement in Soil and Clomazone Volatilization

  • Todd L. Mervosh (a1), Edward W. Stoller (a2), F. William Simmons (a3), Timothy R. Ellsworth (a3) and Gerald K. Sims (a4)...

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