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Seaweed Extract and Alginates as Adjuvants with Sethoxydim

Published online by Cambridge University Press:  12 June 2017

John S. Taylor ,
K. Neil Harker  and
J. Mason Robertson
John S. Taylor
Affiliation:
Agric. Canada Res. Stn., Bag Service 5000, Lacombe, AB, Can., T0C 1S0
K. Neil Harker
Affiliation:
Agric. Canada Res. Stn., Bag Service 5000, Lacombe, AB, Can., T0C 1S0
J. Mason Robertson
Affiliation:
Agric. Canada Res. Stn., Bag Service 5000, Lacombe, AB, Can., T0C 1S0
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Abstract

Experiments were conducted in the greenhouse and the field to determine if a seaweed extract and its component alginates could enhance the activity of sethoxydim on barley (five- to six-leaf stage). In greenhouse trials, sethoxydim with 0.5% oil concentrate was applied at 0.05, 0.1, and 0.15 kg ai/ha; in field trials, sethoxydim with 0.5% oil concentrate was applied at 0.1, 0.2, and 0.3 kg/ha. In both sets of trials the seaweed extract was applied at a rate of 1 and 2 L/ha, and the alginates were applied at 250 and 500 g/ha. When either the seaweed extract, or the calcium ammonium salt of alginic acid was used as an adjuvant a significant increase in sethoxydim activity was usually observed. At the highest rates of these adjuvants, sethoxydim (0.2 kg/ha) activity increased from 59% control (1321 g/m2 fresh weight) with only oil concentrate, to 87% control (224 g/m2 fresh weight) with seaweed extract, or 89% control (184 g/m2 fresh weight) with the calcium ammonium salt of alginic acid. Sodium salts of alginic acid, both low and medium viscosity, were much less effective.

Keywords

Sethoxydim, 2-[1(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onebarley, Hordeum vulgare L. ‘Leduc’AdditivessurfactantsNitrozyme
Type
Research
Information
Weed Technology , Volume 7 , Issue 4 , December 1993 , pp. 916 - 919
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

Literature Cited

1. Blunden, G., Challen, S. B., and Woods, D. L. 1969. Seaweed extracts as fertilizers. J. Sci. Food. Agric. 19:289–293.CrossRefGoogle Scholar
2. Buhler, D. D. and Burnside, O. C. 1984. Effect of application factors on postemergence phytotoxicity of fluazifop-butyl, haloxyfop-methyl, and sethoxydim. Weed Sci. 32:574–583.CrossRefGoogle Scholar
3. Chow, P.N.P. 1983. Herbicide mixtures containing BAS 9052 for weed control in flax (Linum usitatissimum). Weed Sci. 31:20–22.CrossRefGoogle Scholar
4. Chow, P.N.P. and MacGregor, A.W.A. 1983. Effect of ammonium sulphate and surfactants on activity of the herbicide sethoxydim. J. Pestic. Sci. 8:519–527.CrossRefGoogle Scholar
5. Erasmus, D. J., Nelson, W. R., and Van Staden, J. 1982. Combined use of a selective herbicide and seaweed concentrate. South Afr. J. Sci. 78: 423–424.Google Scholar
6. Harker, K. N. 1992. Effects of various adjuvants on sethoxydim activity. Weed Technol. 6:865–870.CrossRefGoogle Scholar
7. Harker, K. N. and O'Sullivan, P. A. 1988. Ammonium sulphate enhances control of annual grass weeds in canola (Brassica campestris) with sethoxydim. Can. J. Plant Sci. 68:1087–1093.CrossRefGoogle Scholar
8. McInnes, D., Harker, K. N., Blackshaw, R. E., and Vanden Born, W. H. 1992. The influence of ultraviolet light on the phytotoxicity of sethoxydim tank-mixtures with various adjuvants. p. 205–213 (Chapter 17) in Foy, C. L., ed., Adjuvants for Agrichemicals. CRC Press, Boca Raton, FL.Google Scholar
9. Merck Index. 1983. Tenth Edition, Windholz, M., ed., p. 37–38.Google Scholar
10. Wanamarta, G., Penner, D., and Kells, J. J. 1989. The basis of bentazon antagonism on sethoxydim absorption and activity. Weed Sci. 37: 400–404.CrossRefGoogle Scholar