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Yellow Nutsedge Response to Southern Root-Knot Nematodes, Chile Peppers, and Metolachlor

Published online by Cambridge University Press:  12 June 2017

Jill Schroeder ,
Michael J. Kenney ,
Stephen H. Thomas  and
Leigh Murray
Jill Schroeder
Affiliation:
Dep. Entomol., Plant Pathol. Weed Sci.
Michael J. Kenney
Affiliation:
Dep. Entomol., Plant Pathol. Weed Sci.
Stephen H. Thomas
Affiliation:
Dep. Entomol., Plant Pathol. Weed Sci.
Leigh Murray
Affiliation:
Dep. Exp. Statistics, New Mexico State Univ., Las Cruces, NM 88003
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Abstract

Greenhouse experiments showed that yellow nutsedge shoot number and shoot and root dry weights were reduced by root-knot nematodes and chile peppers. Root-knot nematodes increased and chile peppers decreased the number of yellow nutsedge tubers. Yellow nutsedge tuber germination was reduced by chile peppers but not by root-knot nematodes. Yellow nutsedge established from root-knot nematode-infected tubers produced more tubers than noninfected tubers. Root-knot nematode populations became established on yellow nutsedge root systems when plants were established from tubers previously cultured with root-knot nematodes. Metolachlor stunted chile peppers, eliminated yellow nutsedge, and influenced root-knot nematode populations through reduction of host plant root mass. However, when root-knot nematodes were present, yellow nutsedge tuber germination was not affected by metolachlor. This research indicates that the pests do not exist independently and that their management may be interrelated.

Keywords

Metolachlor, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamideyellow nutsedge, (Cyperus esculentus L. # CYPES)chile peppers, (Capsicum annuum L. ‘NM 6-4’)southern root-knot nematode, (Meloidogyne incognita (Kofoid and White) Chitwood, host race 3)Weed ecologypest interactionsCYPES
Type
Weed Biology and Ecology
Information
Weed Science , Volume 42 , Issue 4 , December 1994 , pp. 534 - 540
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

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