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Response of Sago Pondweed to Periodic Removal of Topgrowth

Published online by Cambridge University Press:  12 June 2017

A. G. Ogg Jr. ,
V. F. Bruns  and
A. D. Kelley
A. G. Ogg Jr.
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Irrigated Agriculture Research and Extension Center, Prosser, Washington Pesticides Regulation Division, Agr. Res. Serv., U. S. Dep. of Agr., Oregon State University, Corvallis, Oregon
V. F. Bruns
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Irrigated Agriculture Research and Extension Center, Prosser, Washington
A. D. Kelley
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Irrigated Agriculture Research and Extension Center, Prosser, Washington
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Abstract

A 2-year field study was conducted to determine the effects of periodic removal of topgrowth on tuber production and persistence of sago pondweed (Potamogeton pectinatus L.) in an irrigation canal. Plots were treated at 1, 2, and 4-week intervals throughout the irrigation season with aromatic solvent to kill the topgrowth. The tuber population was determined before the treatments began and at the end of each season. At the end of the first season, the number of tubers was reduced 78, 87, and 54% in the plots treated at 1, 2, and 4-week intervals, respectively. After two seasons, the number of tubers was reduced 91, 81, and 80%, respectively. All treatments controlled sago pondweed topgrowth effectively, but none eliminated the tubers completely.

Type
Research Article
Information
Weed Science , Volume 17 , Issue 2 , April 1969 , pp. 139 - 141
Copyright
Copyright © 1969 Weed Science Society of America 

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References

Literature Cited

1. Bruns, V. F., Hodgson, J. M., Arle, H. F., and Timmons, F. L. 1955. The use of aromatic solvents for control of submersed aquatic weeds in irrigation channels. U. S. Dep. Agr. Circ. No. 971. 33 p.Google Scholar
2. Otto, N. E., Bartley, T. R., and Garstka, W. U. 1964. Pondweed propagule production as affected by repeated aromatic solvent treatments. U. S. Bur. Reclam. Water Conser. Rep. WC-13. 77 p.Google Scholar
3. Yeo, R. R. 1965. Life history of sago pondweed. Weeds 13:314–321.Google Scholar