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Characteristics and Control of Camelthorn

Published online by Cambridge University Press:  12 June 2017

Harold D. Kerr ,
W. C. Robocker  and
T. J. Muzik
Harold D. Kerr
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Beltsville, Maryland, and Pullman, Washington
W. C. Robocker
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Beltsville, Maryland, and Pullman, Washington
T. J. Muzik
Affiliation:
Washington State University, Pullman, Washington
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Abstract

Alhagi pseudalhagi (Bieb.) Desv. (camelthorn) was in troduced into California about 1915, and into the State of Washington about 1935. Here, it was declared a primary noxious weed in 1955. Seeds scarified with sulfuric acid germinated 90–98 per cent at 25 C. Some seeds were viable after burial one year in soil or submergence for 9 months in running water. Seedlings in the infested area were found only in bovine manure. Tests indicated scarification and transportation of seed in the rumen could accelerate the spread of camelthorn. Lack of favorable moisture and soil temperature at the same time prevented establishment of camelthorn planted at several locations. Eradication resulted from treatment with 2,3,6-trichlorobenzoic acid (2,3,6-TBA). Three repeated sprays with esters of 2,4-dichlorophenoxyacetic acid (2,4-D) within a growing season gave control; however, control did not appear to be directly related to depletion of reserve foods in the roots.

Type
Research Article
Information
Weeds , Volume 13 , Issue 2 , April 1965 , pp. 156 - 163
Copyright
Copyright © 1965 Weed Science Society of America 

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References

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