The Efficacy of Bacillus thuringiensis spp. Galleriae Against Rice Water Weevil (Coleoptera: Curculionidae) for Integrated Pest Management in California Rice

Rice water weevil (Lissorhoptrus oryzophilus Kushel) is the most damaging insect pest of rice in the United States. Larval feeding on the roots stunt growth and reduce yield. Current pest management against the weevil in California relies heavily on pyrethroids that can be damaging to aquatic food w...

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Bibliographic Details
Published in:Journal of economic entomology 2015-02, Vol.108 (1), p.45-52
Main Authors: Aghaee, Mohammad-Amir, Godfrey, Larry D
Format: Article
Language:English
Subjects:
Agricultural practices
Animals
aquatic food webs
Bacillus thuringiensis
BIOLOGICAL AND MICROBIAL CONTROL
biopesticide
California
chemistry
crop protection
Cyhalothrin
Food chains
Food webs
Formulations
greenhouses
Insect Control
insect pests
Insecticides
Integrated pest management
lambda-cyhalothrin
Larvae
Limonins
Lissorhoptrus oryzophilus
microbial control
Nitriles
Oryza
Oryza sativa
Pest control
Pesticides
Pests
Pyrethrins
Pyrethroids
Rice
roots
Weevils
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Summary:Rice water weevil (Lissorhoptrus oryzophilus Kushel) is the most damaging insect pest of rice in the United States. Larval feeding on the roots stunt growth and reduce yield. Current pest management against the weevil in California relies heavily on pyrethroids that can be damaging to aquatic food webs. Examination of an environmentally friendly alternative biopesticide based on Bacillus thuringiensis spp. galleriae chemistry against rice water weevil larvae showed moderate levels of activity in pilot studies. We further examined the performance of different formulations of Bt.galleriae against the leading insecticide used in California rice, λ-cyhalothrin. The granular formulation performed as well as the λ-cyhalothrin in use in California in some of our greenhouse and field studies. This is the first reported use of B. thuringiensis spp. galleriae against rice water weevil.
ISSN:0022-0493
1938-291X
DOI:10.1093/jee/tou024