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Woollyleaf Bursage (Ambrosia grayi) and Texas Blueweed (Helianthus ciliaris) Control by Dicamba

Published online by Cambridge University Press:  12 June 2017

J. Wayne Keeling  and
John R. Abernathy
J. Wayne Keeling
Affiliation:
Texas Agric. Exp. Stn., Lubbock, TX 79401
John R. Abernathy
Affiliation:
Texas Agric. Exp. Stn., Lubbock, TX 79401
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Abstract

Woollyleaf bursage [Ambrosia grayi (A. Nels.) Shinners # AMBGR] and Texas blueweed (Helianthus ciliaris DC. # HELCI) increasingly are weed problems on the Texas High Plains. Field experiments were established to evaluate dimethylamine, potassium, sodium, calcium, and aluminum salts of dicamba (3,6-dichloro-2-methoxybenzoic acid) applied at 1.1, 2.2, and 4.4 kg ai/ha to infestations of each species. Initial woollyleaf bursage control was better than initial Texas blueweed control. Dimethylamine and potassium salts provided highest control levels, and increasing rates improved control. One-year control was higher for Texas blueweed than woollyleaf bursage, and 1-yr control of both species improved with increased rates.

Keywords

Ambrosia grayiHelianthus ciliarisformulationsAMBGRHELCI
Type
Research
Information
Weed Technology , Volume 2 , Issue 1 , January 1988 , pp. 12 - 15
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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