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| Web URL(s): | http://www.sciencedirect.com/science/article/pii/S1049964498906636/pdf?md5=10a42958cdd7ee8441be2b8425f89c8b&pid=1-s2.0-S1049964498906636-main.pdf
Last checked: 09/29/2015
Requires: PDF Reader
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| Publication Type:
| Refereed |
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| Author(s): | Koppenhöfer, A. M.;
Choo, H. Y.;
Kaya, H. K.;
Lee, D. W.;
Gelernter, W. D. |
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| Author Affiliation: | Koppenhöfer and Kaya: Department of Nematology. University of California, One Shields Avenue, Davis, California 95616-8668; and Choo and Lee: Department of Agricultural Biology, Gyeongsang National University, Chinju, Gyeongnam 660-701, Republic of Korea; and Gelernter: PACE Turfgrass Research Institute, 1267 Diamond Street, San Diego, California 92109 |
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| Title: | Increased field and greenhouse efficacy against scarab grubs with a combination of an entomopathogenic nematode and Bacillus thuringiensis |
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| Source: | Biological Control: Theory and Application in PestManagement. Vol. 14, No. 1, January 1999, p. 37-44. |
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| Publishing Information: | San Diego: Academic Press |
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| # of Pages: | 8 |
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| Related Web URL: | http://www.sciencedirect.com/science/article/pii/S1049964498906636
Last checked: 09/29/2015
Notes: Abstract only |
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| Keywords: | TIC Keywords: Entomopathogenic nematodes; Bacillus thuringiensis; Insect control; Exomala orientalis; Cyclocephala hirta; Cyclocephala pasadenae; Synergism; Application timing
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| Abstract/Contents: | "In previous laboratory studies, entomopathogenic nematodes and Bacillus thuringiensis subspecies japonenis (Btj) caused additive or synergistic mortality in third-instar Cyclocephala (Coleoptera: Scarabaeidae) grubs when the nematodes were applied at least 7 days after Btj. This type of mortality was observed for C. hirta, a species that is not very susceptible to Btj, and for C. pasadenae, a species that has intermediate susceptibility to Btj. In the present study, this observation was confirmed for third-instar Anomala orientalis, a species that is highly susceptible to Btj. In greenhouse and field studies, additive or synergistic interactions between nematodes and Btj were observed for all three scarab species. The interactions were variable, and to achieve acceptable grub control, high concentrations of Btj had to be applied. A subsequent greenhouse experiment showed that young third-instar C. pasadenae were more susceptible to Btj than older third instars. In addition the interaction between nematodes and Btj was also more synergistic in the younger than in the older third instars. In a field test against a population of C. hirta consisting of late second and early third instars, combinations of nematodes and Btj at economic application rates provided acceptable control levels whether applied simultaneously or with a 4-day delay between Btj and nematode application. Our observations suggest that curative control of white grubs is possible with combinations of entomopathogenic nematodes and Btj if the application are done when populations consist of second and early third instars." |
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| Language: | English |
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| References: | 14 |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Koppenhöfer, A. M., H. Y. Choo, H. K. Kaya, D. W. Lee, and W. D. Gelernter. 1999. Increased field and greenhouse efficacy against scarab grubs with a combination of an entomopathogenic nematode and Bacillus thuringiensis. Biol. Control: Theory Appl. Pest Manage. 14(1):p. 37-44. |
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| Web URL(s):
http://www.sciencedirect.com/science/article/pii/S1049964498906636/pdf?md5=10a42958cdd7ee8441be2b8425f89c8b&pid=1-s2.0-S1049964498906636-main.pdf
Last checked: 09/29/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 925 .B5 |
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