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Southern Root-Knot Nematode Effect on Purple Nutsedge (Cyperus rotundus) and Chile Pepper Response to Halosulfuron

Published online by Cambridge University Press:  20 January 2017

Justin H. Norsworthy ,
Jill Schroeder ,
Stephen H. Thomas  and
Leigh W. Murray
Justin H. Norsworthy
Affiliation:
Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, NM 88003-0003
Jill Schroeder*
Affiliation:
Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, NM 88003-0003
Stephen H. Thomas
Affiliation:
Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, NM 88003-0003
Leigh W. Murray
Affiliation:
University Statistics Center, New Mexico State University, Las Cruces, NM 88003-0003
*
Corresponding author's E-mail: [email protected]
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Abstract

Greenhouse experiments were conducted in the summer of 2002 to determine the effect of root-knot nematodes on purple nutsedge suppression and chile pepper response after applications of halosulfuron. Purple nutsedge and chile pepper plants were grown together in 20-cm-diam pots, inoculated with root-knot nematodes, and treated with halosulfuron 2 or 4 wk after inoculation. Root-knot nematode infection had no effect on purple nutsedge control or chile pepper injury after treatment with halosulfuron, regardless of application timing. However, root-knot nematode reproduction was lower in pots that received a halosulfuron treatment, particularly halosulfuron applied 2 wk after inoculation. Controlling purple nutsedge using halosulfuron in a field infested with root-knot nematodes could also decrease the amount of nematode inoculum that is available for infecting chile plants later in the season.

Keywords

Halosulfuronpurple nutsedge, Cyperus rotundus L. # CYPROchile pepper, Capsicum annuum L. ‘Joe E. Parker’southern root-knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, host race 3Pest interactionsALS herbicideCapsicum annuum, CYPROGH1, first greenhouse experimentGH2, second greenhouse experimentGH3, third greenhouse experiment
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 4 , December 2005 , pp. 1004 - 1011
Copyright
Copyright © Weed Science Society of America 

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