Synergism of imidacloprid and an entomopathogenic nematode: a novel approach to white grub (Coleoptera: Scarabaeidae) control in turfgrass

Combinations of the insecticide imidacloprid and entomopathogenic nematodes were tested for control of white grubs. In greenhouse tests, field-collected 3rd-instar white grubs were placed in pots with grass treated with imidacloprid, the entomopathogenic nematode Heterorhabditis bacteriophora (Poina...

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Bibliographic Details
Published in:Journal of economic entomology 1998-06, Vol.91 (3), p.618-623
Main Authors: Koppenhofer, A.M. (University of California, Davis, CA.), Kaya, H.K
Format: Article
Language:English
Subjects:
Biological and medical sciences
Control
CYCLOCEPHALA
CYCLOCEPHALA HIRTA
CYCLOCEPHALA PASADENAE
ENTOMOPHILIC NEMATODES
Fundamental and applied biological sciences. Psychology
HETERORHABDITIS BACTERIOPHORA
INSECT NEMATODES
INSECTICIDAS
INSECTICIDE
INSECTICIDES
INTEGRATED CONTROL
Integrated pest control
LARVAE
LARVAS
LARVE
LOLIUM PERENNE
LUCHA INTEGRADA
LUTTE INTEGREE
MORTALIDAD
MORTALITE
MORTALITY
NEMATODE ENTOMOPATHOGENE
NEMATODOS DE INSECTOS
Phytopathology. Animal pests. Plant and forest protection
Protozoa. Invertebrates
SINERGISMO
SYNERGISM
SYNERGISME
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Summary:Combinations of the insecticide imidacloprid and entomopathogenic nematodes were tested for control of white grubs. In greenhouse tests, field-collected 3rd-instar white grubs were placed in pots with grass treated with imidacloprid, the entomopathogenic nematode Heterorhabditis bacteriophora (Poinar), or both. Combinations of imidacloprid and nematodes had a strong synergistic effect on mortality at imidacloprid concentrations ranging between 50 to 200 g (AI)/ha. This effect was observed when imidacloprid and the nematodes were applied at the same time or when imidacloprid was applied first followed by the nematodes 14 d later. The synergistic interaction occurred against a nematode-susceptible scarab species, Cyclocephala hirta LeConte, and against a more nematode-resistant scarab species, C. pasadenae Casey. When infective juveniles of H. bacteriophora were agitated in solutions of imidacloprid for 24 h, no negative effect on their survival and infectivity was observed
ISSN:0022-0493
1938-291X
DOI:10.1093/jee/91.3.618