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Moisture and temperature requirements for London rocket (Sisymbrium irio) emergence

Published online by Cambridge University Press:  20 January 2017

Jarren Ray ,
Rebecca Creamer ,
Jill Schroeder  and
Leigh Murray
Jarren Ray
Affiliation:
Department of Entomology, Plant Pathology and Weed Science, New Mexico State University, Las Cruces, NM 88003
Jill Schroeder
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 hypothesized to be the most important overwintering host of the beet leafhopper in southern New Mexico. Knowledge of the environmental factors affecting the emergence of this plant is essential to developing a predictive model for London rocket and leafhopper populations. The temperature and moisture optima for London rocket germination and emergence were assessed using growth chamber studies. Temperatures of 5 to 35 C and soil water tension treatments of − 0.01 to − 1.5 MPa were tested. Optimal seed burial depth also was assessed. Optimal London rocket germination occurred at approximately 15 C and maximum emergence was achieved at 15 to 20 C with soil moisture tensions of − 0.01 to − 1.2 MPa. London rocket emergence occurred best at a seed burial depth of 2 mm.

Keywords

London rocket, Sisymbrium irio L.Germinationsoil moistureemergence
Type
Weed Biology and Ecology
Information
Weed Science , Volume 53 , Issue 2 , April 2005 , pp. 187 - 192
Copyright
Copyright © Weed Science Society of America 

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