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| Web URL(s): | http://usgatero.msu.edu/v07/n21.pdf
Last checked: 02/23/2009
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Koppenhöfer, Albrecht M.;
Fuzy, Eugene M. |
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| Author Affiliation: | Koppenhöfer: Associate Professor and Extension Specialist; Fuzy: Senior Laboratory Technician, Turfgrass Entomology, Department of Entomology, Rutgers University, New Brunswick, New Jersey |
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| Title: | Long-term effects and persistence of nematodes for suppression of white grubs |
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| Source: | USGA Turfgrass and Environmental Research Online. Vol. 7, No. 21, November 1 2008, p. [1-14]. |
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| Publishing Information: | Far Hills, NJ: United States Golf Association, Green Section |
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| # of Pages: | 16 |
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| Keywords: | TIC Keywords: Steinernema scarabaei; Grub control; Biological control; Exomala orientalis; Application rates; Biological insecticides; Population dynamics; Life cycle
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| Abstract/Contents: | "Steinernema scarabaei has already shown exceptional potential for inundative control of white grubs. We conducted three field experiment to determine the long-term effects of S. scarabaei application on white grub populations and the nematode's persistence. S. scarabaei was applied in mid-September at rates from 0.06 to 2.5 × 109 infective juveniles (IJs)/ha to turfgrass plots seeded with oriental beetle, Anomala orientalis, larvae. White grub and nematode populations were monitored for 3-4 years thereafter. Results include: S. scarabaei provided 77-100% A. orientalis control within 1 month of application at rates of 0.25 to 2.5 ×O 109 IJs/ha and 86-100% control in the following spring at rates of 0.1 to 2.5 ×O 109 IJs/ha. S. scarabaei provided significant control in the next A. orientalis generation in two out of 10 treatments in fall (i.e., 13 months after application) and six out of 10 treatments in the following spring. Thereafter, significant control was only observed occasionally. Recovery of S. scarabaei from soil samples was highly variable with few significant differences among treatments observed. S. scarabaei recovery from the treated plots was generally more consistent through the first spring after application and became more variable thereafter, but S. scarabaei was recovered for up to 4 years in the experimental plots. Endemic Heterorhabditis bacteriophora and Steinernema carpocapsae populations were regularly recovered from the experimental plots, often in higher numbers than S. scarabaei, but had no significant effect on A. orientalis population densities. Results suggest that once current problems with its mass production can be overcome, S. scarabaei could be augmented periodically in areas with recurrent white grub infestations to provide long-term suppression." |
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| Language: | English |
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| References: | 28 |
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| See Also: | Other Reports from this USGA research project: 2003-03-244 |
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| Note: | Summary as abstract
Pictures, color
Tables
Figures
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Koppenhöfer, A. M., and E. M. Fuzy. 2008. Long-term effects and persistence of nematodes for suppression of white grubs. USGA Turfgrass Environ. Res. Online. 7(21):p. [1-14]. |
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| Web URL(s):
http://usgatero.msu.edu/v07/n21.pdf
Last checked: 02/23/2009
Requires: PDF Reader |
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MSU catalog number: b3952822a |
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