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Slow-Release Delivery System for Herbicides in Container-Grown Stock

  • Stanley F. Gorski (a1)

Abstract

Metolachlor, applied to the surface of leaching columns as dicalcium phosphate tablets, was recovered over a period of 25 d compared with 2 and 3 d for emulsifiable concentrate and granular formulations, respectively. In similar studies, approximately 27% of napropamide was recovered from tablets during the same period. Adding an adjuvant to the napropamide tablet mixture increased the recovery rate to 55%. Tablet hardness and size had little effect on the release rate of napropamide. Tablets containing 4% ai napropamide released greater amounts of herbicide at a single collection period than did tablets containing 1% ai. Adding an adjuvant to the napropamide tablet mixture significantly improved Italian ryegrass control in the area adjacent to herbicide placement.

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1. Anderson, W. P. 1977. Weed Science Principles. West Publ., New York. p. 171200.
2. Baur, J. R. 1980. Release characteristics of starch xanthide herbicide formulations. J. Environ. Qual. 9:379382.
3. Dale, J. E. 1984. Multichemical granules formulated with gum xanthan, loess, and rung oil. Weed Sci. 32:315319.
4. Danielson, L. L. 1967. Evaluation of herbicide impregnated cloth. Weeds 15:6062.
5. Gorski, S. F., Reiners, S., and Ruizzo, M. A. 1989. Release rate of three herbicides from controlled-release tablets. Weed Technol. 3:349352.
6. Hamill, A. S., Layne, R.E.C., and von Stryk, F. G. 1975. Weed control in a fruit tree nursery with herbicide-impregnated string. HortScience 10:587588.
7. Koncal, J. J., Gorski, S. F., and Fretz, T. A. 1981. Slow-release herbicide formulation for weed control in container-grown plants. HortScience 16:8384.
8. Koncal, J. J., Gorski, S. F., and Fretz, T. A. 1981. Leaching of EPTC, alachlor, and metolachlor through a nursery medium as influenced by herbicide formulations. HortScience 16:757758.
9. Raboy, V. and Hopen, H. J. 1982. Effectiveness of starch xanthide formulations of chloramben for weed control in pumpkin (Cucurbita moschata). Weed Sci. 30:169174.
10. Riggle, B. D. and Penner, D. 1987. Evaluation of pine kraft lignins for controlled release of alachlor and metribuzin. Weed Sci. 35:243246.
11. Ruizzo, M. A., Smith, E. M., and Gorski, S. F. 1983. Evaluations of herbicides in slow-release formulations for container-grown landscape crops. J. Am. Soc. Hortic. Sci. 108:551553.
12. Schreiber, M. M. and White, M. D. 1980. Granule structure and rate of release with starch-encapsulated thiocarbamates. Weed Sci. 28: 685690.
13. Smith, A. E. and Verma, B. P. 1977. Weed control in nursery stock by controlled release of alachlor. Weed Sci. 25:175177.
14. Verma, B. P. and Smith, A. E. 1978. Slow release herbicide tablets for container nursery. Trans. Am. Soc. Agric. Eng. 21:10541059.
15. Verma, B. P. and Smith, A. E. 1981. Dry-pressed slow release herbicide tablets. Trans. Am. Soc. Agric. Eng. 24:14001407.

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