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Tarping as an Alternative for Perennial Pepperweed (Lepidium latifolium) Control

Published online by Cambridge University Press:  20 January 2017

Rachel A. Hutchinson  and
Joshua H. Viers
Rachel A. Hutchinson*
Affiliation:
Department of Environmental Science and Policy, University of California, Davis, One Shields Ave., Davis, CA 95616
Joshua H. Viers
Affiliation:
Department of Environmental Science and Policy, University of California, Davis, One Shields Ave., Davis, CA 95616
*
Corresponding Author's E-mail: rahutchinson@ucdavis.edu
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Abstract

Perennial pepperweed (Lepidium latifolium) is a potential threat to biodiversity and ecosystem function in the communities that it invades. The mechanism for its successful invasion of riparian and wetland environments includes reproduction via seed and root propagules and its ability to withstand long duration flooding and saline conditions once established. Controlling this species presents a number of challenges for land managers, including difficult property access, limited herbicide choice, and the varied success of weed control measures. In this study, we tested the efficacy of a nonchemical-modified tarp treatment, and compared posttreatment stem counts to herbicide treatments with Mow–glyphosate and chlorsulfuron in a wildland setting. We found that tarping applied in combination with a mow and till treatment was effective at controlling perennial pepperweed at levels similar to herbicide treatments with Mow–glyphosate and with Mow–chlorsulfuron. However, Mow–Till–Tarp treatment is extremely time consuming and has the potential to limit native plant community recovery.

Keywords

Chlorsulfuronglyphosateperennial pepperweed, Lepidium latifolium L. LEPLALepidium latifoliumperennial pepperweednonchemical controlherbicidetarping
Type
Research
Information
Invasive Plant Science and Management , Volume 4 , Issue 1 , March 2011 , pp. 66 - 72
Copyright
Copyright © Weed Science Society of America 

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