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Release Rate of Three Herbicides from Controlled-Release Tablets

Published online by Cambridge University Press:  12 June 2017

Stanley F. Gorski ,
Stephen Reiners  and
Michael A. Ruizzo
Stanley F. Gorski
Affiliation:
The Ohio State Univ., Dep. Hortic., Columbus, OH 43210
Stephen Reiners
Affiliation:
The Ohio State Univ., Dep. Hortic., Columbus, OH 43210
Michael A. Ruizzo
Affiliation:
The Ohio State Univ., Dep. Hortic., Columbus, OH 43210
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Abstract

Six, 9, and 12-mm diam dicalcium phosphate tablets were evaluated for their release of acetochlor, metolachlor, and metribuzin. Greenhouse bioassays with Italian ryegrass demonstrated that herbicides from the smaller tablets did not control grass as long as from the larger tablets. Italian ryegrass was controlled within a 5- to 7-cm diam circle around the 12-mm diam tablet and a 5-cm diam circle around the 6-mm diam tablet. All tested herbicides responded in a similar fashion. Six-mm diam tablets released metolachlor for 11 weeks, while the 12-mm tablet was active for 28 weeks.

Keywords

Acetochlor, 2-chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamidemetolachlor, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamidemetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-oneItalian ryegrass, Lolium multiflorum Lam. #3 LOLMUControlled-releaseacetochlormetribuzinmetolachlor
Type
Research
Information
Weed Technology , Volume 3 , Issue 2 , June 1989 , pp. 349 - 352
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

Literature Cited

1. Baur, J. R. 1980. Release characteristics of starch xanthide herbicide formulations. J. Environ. Qual. 9:379–382.Google Scholar
2. Dale, J. E. 1984. Multichemical granules formulated with gum xanthan, loess, and tung oil. Weed Sci. 32:315–319.Google Scholar
3. Danielson, L. L. 1967. Evaluation of herbicide impregnated cloth. Weeds 15:60–62.Google Scholar
4. 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 10:587–588.CrossRefGoogle Scholar
5. Koncal, J. J., Gorski, S. F., and Fretz, T. A. 1981. Slow-release herbicide formulation for weed control in container-grown plants. HortScience 16:83–84.CrossRefGoogle Scholar
6. 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 16:757–758.Google Scholar
7. Lanphear, F. O. 1968. Incorporation of dichlobenil in mulches. Weeds 16:230–231.Google Scholar
8. Mehltretter, C. L., Roth, W. B., Wealey, F. B., McQuire, T. A., and Russell, C. R. 1974. Potential controlled release herbicides from 2,4-D esters of starch. Weed Sci. 22:414–418.CrossRefGoogle Scholar
9. Raboy, V., and Hopen, H. J. 1982. Effectiveness of starch xanthide formulations of chloramben for weed control in pumpkins (Cucurbita moschata). Weed Sci. 30:169–174.Google Scholar
10. Riggle, B. D., and Penner, D. 1987. Evaluation of pine kraft lignins for controlled release of alachlor and metribuzin. Weed Sci. 35:243–246.Google Scholar
11. Riggle, B. D., and Penner, D. 1988. Controlled release of three herbicides with kraft lignin PC940C. Weed Sci. 36:131–136.CrossRefGoogle Scholar
12. 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. 108:551–553.CrossRefGoogle Scholar
13. Shasha, B. S., Doane, W. M., and Russell, C. R. 1976. Starch encapsulated pesticides for slow release. J. Polym. Sci. 14:417–420.Google Scholar
14. Smith, A. E., and Verma, B. P. 1977. Weed control in nursery stock by controlled release of alachlor. Weed Sci. 25.175–178.CrossRefGoogle Scholar
15. Verma, B. P., and Smith, A. E. 1978. Slow release herbicide tablets for container nursery. Trans. Am. Soc. Agric. Eng. 21:1054–1059.Google Scholar
16. Verma, B. P., and Smith, A. E. 1981. Dry-pressed slow release herbicide tablets. Trans. Am. Soc. Agric. Eng. 24:1400–1403.Google Scholar
17. White, M. D., and Schreiber, M. M. 1984. Herbicidal activity of starch encapsulated trifluralin. Weed Sci. 32:387–394.Google Scholar