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Twenty-year Control of California False-hellebore

Published online by Cambridge University Press:  12 June 2017

M. Coburn Williams
M. Coburn Williams*
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Poisonous Plant Res. Lab., 1150 E. 1400 N., Logan, UT 84321
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Abstract

Experimental plots treated with 2,4-D amine at 2.2 kg ae ha-1 in 1968 and 1969 to control California false-hellebore were evaluated in July 1989 to determine long-term control of California false-hellebore, changes in foliar cover, and increases in production of desirable species. Control of California false-hellebore was 100% on all treated plots. The foliar cover on treated plots averaged 78% grasses and sedge, 20% broadleaf plants, and no California false-hellebore. Control plots averaged 85% California false-hellebore, 10% grasses and sedge, and 4.5% broadleaf plants. Vegetative production of grasses and sedge was 3.8 times greater on treated plots compared with controls.

Keywords

2,4-D, (2,4-dichlorophenoxy)acetic acidCalifornia false-hellebore, Veratrum californicum Durand ♯ VEACALiliaceaepoisonous plantVeratrum californicumVEACA
Type
Research
Information
Weed Technology , Volume 5 , Issue 1 , March 1991 , pp. 40 - 42
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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