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Planting date affects phenology of London rocket (Sisymbrium irio) and interaction with beet leafhopper (Circulifer tenellus)

Published online by Cambridge University Press:  20 January 2017

Jarren Ray ,
Jill Schroeder ,
Rebecca Creamer  and
Leigh Murray
Jarren Ray
Affiliation:
Department of Entomology, Plant Pathology and Weed Science, New Mexico State University, Las Cruces, NM 88003
Rebecca Creamer
Affiliation:
Department of Entomology, Plant Pathology and Weed Science, New Mexico State University, Las Cruces, NM 88003
Leigh Murray
Affiliation:
University Statistics Center, New Mexico State University, Las Cruces, NM 88003
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Abstract

London rocket is a common winter annual weed in southern New Mexico that can host beet curly top virus and its insect vector, the beet leafhopper. Experiments were conducted in southern New Mexico to determine if London rocket could serve as a host for overwintering beet leafhopper. Field experiments were carried out from 2002 to 2003 and from 2003 to 2004 to compare the impact of three London rocket planting dates on plant emergence and life history and leafhopper survival. Emergence was highest in October-planted London rocket, low in January/February plantings, and did not occur for August plantings. The life cycle was 185 d and 125 d for October- and January-planted London rocket, respectively, and growth of the plant (including height and rosette base diameter) was greater for London rocket that was planted in October. October-planted London rocket survived from late October through mid to late April, the period of time needed to serve as an overwintering host for beet leafhoppers. Caging the plants to assess beet leafhopper survival did not affect rate of plant growth, but it reduced the time to flowering for October-planted London rocket and increased the height and weight of plants. Beet leafhoppers were able to survive for approximately 2 mo in early winter or spring on caged London rocket plants.

Keywords

London rocket, Sisymbrium irio L. SSYIRbeet leafhopper, Circulifer tenellus (Baker)beet curly top virus, CurtovirusEmergenceseasonal phenology
Type
Weed Biology and Ecology
Information
Weed Science , Volume 54 , Issue 1 , February 2006 , pp. 127 - 132
Copyright
Copyright © Weed Science Society of America 

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References

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