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Herbicidal Control of Greasewood (Sarcobatus vermiculatus) and Salt Rabbitbrush (Chrysothamnus nauseosus ssp. consimilis)

Published online by Cambridge University Press:  12 June 2017

Greg J. Cluff ,
Bruce A. Roundy ,
Raymond A. Evans  and
James A. Young
Greg J. Cluff
Affiliation:
Univ. Nevada, 920 Valley Road, Reno, NV 89512
Bruce A. Roundy
Affiliation:
Res. Serv., Renewable Resource Center, Univ. Nevada, 920 Valley Road, Reno, NV 89512
Raymond A. Evans
Affiliation:
Res. Serv., Renewable Resource Center, Univ. Nevada, 920 Valley Road, Reno, NV 89512
James A. Young
Affiliation:
Res. Serv., Renewable Resource Center, Univ. Nevada, 920 Valley Road, Reno, NV 89512
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Abstract

The control of greasewood [Sarcobatus vermiculatus (Hook.) Torr.] and salt rabbitbrush [Chrysothamnus nauseosus ssp. consimilis (Greene) Hall and Clem.] was investigated with application of 2,4-D [(2,4-dichlorophenoxy)acetic acid] and a mixture of 2,4-D and picloram (4-amino-3,5,6-trichloropicolinic acid). The herbicides were applied at 2-week intervals from May 1 to August 1. Greasewood had accelerated shoot growth and was most susceptible to application of 2,4-D during June. Accelerated shoot growth and maximum susceptibility to 2,4-D of salt rabbitbrush began in June and extended into July. Mortality of greasewood and salt rabbitbrush from 2,4-D at 2.2 kg/ha applied at optimum dates averaged 72 and 87%, respectively. The picloram/2,4-D mixture was more effective for greasewood control than 2,4-D alone in 1 yr at very early and late application dates on a xeric site and only at the last date of application on a mesic site. Reapplication of 2,4-D at 2.2 and 3.3 kg/ha in June to partially controlled stands gave excellent control of both greasewood and rabbitbrush.

Keywords

Rangeland2,4-Dpicloramtriclopyrdicambasilvex
Type
Research Article
Information
Weed Science , Volume 31 , Issue 2 , March 1983 , pp. 275 - 279
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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