title: The Efficacy of Bacillus thuringiensis spp. galleriae Against Rice Water Weevil (Coleoptera: Curculionidae) for Integrated Pest Management in California Rice.
abstract: 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.
authors.affiliation: Department of Entomology and Nematology, University of California, Davis, One Shields Ave., Davis, CA 95616. maghaee@ucdavis.edu.
authors.forename: Mohammad-Amir
authors.initials: MA
authors.lastname: Aghaee
authors.affiliation: Department of Entomology and Nematology, University of California, Davis, One Shields Ave., Davis, CA 95616.
authors.forename: Larry D
authors.initials: LD
authors.lastname: Godfrey
mesh_terms: D000818:Animals; D001413:Bacillus thuringiensis; D002140:California; D007300:Insect Control; D036701:Limonins; D009570:Nitriles; D012275:Oryza; D011722:Pyrethrins; D048889:Weevils
chemical_list: D036701:Limonins; D009570:Nitriles; D011722:Pyrethrins; C010329:azadirachtin; C037304:cyhalothrin
keywords: Lissorhoptrus oryzophilus; Oryza sativa; biopesticide; crop protection; microbial control