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| Web URL(s): | http://ac.els-cdn.com/S0022201185710282/1-s2.0-S0022201185710282-main.pdf?_tid=a9c5fef2-6c50-11e5-b82a-00000aab0f02&acdnat=1444153120_ecaef76318951b7e927c7f664a708182
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| Publication Type:
| Refereed |
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| Author(s): | Koppenhöfer, Albrecht M.;
Kaya, Harry K.;
Taormino, Steven P. |
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| Author Affiliation: | Department of Nematology, University of California, Davis, California 95616-8668 |
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| Title: | Infectivity of entomopathogenic nematodes (Rhabditida: Steinernematidae) at different soil depths and moistures |
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| Source: | Journal of Invertebrate Pathology. Vol. 65, No. 2, March 1995, p. 193-199. |
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| Publishing Information: | San Diego: Academic Press |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Entomopathogenic nematodes; Soil depth; Soil moisture; Steinernema carpocapsae; Steinernema glaseri; Establishment
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| Abstract/Contents: | "The presence of hosts at different depths of soil and the influence of different soil moistures on the infectivities (as measured by the number of nematodes establishing in the host) of two entomopathogenic nematode species, Steinernema carpocapsae and S. glaseri, were investigated. The infective juveniles had been uniformly distributed in the soil. At a water potential of -0.006 megaPascal (MPa) in a sandy loam soil, nematode establishment at different depths was variable in both species. S. carpcapsae tended to establish at equal numbers in hosts at depths between 0 and 10 cm, whereas S. glaseri showed consistent establishment from 2 to 10 cm but was variable at 0 cm. Tests in 1-liter cups and 3-ml arenas showed that soil moisture affected nematode establishment. S. carpocapsae started establishing in hosts at -5 MPa water potential in 3-ml arenas and 0.3 MPa in 1-liter cups (low soil moistures) and had the highest establishment numbers between -0.1 and -0.01 MPa. At higher soil moistures, the number of nematodes establishing dropped significantly, especially in the 1-liter cups. The establishment range for S. glaseri was more restricted at the low soil moistures. It started establishing in hosts at -0.3 MPa in the 3-ml arenas and -0.05 MPa in the 1-liter cups, respectively. Its establishment numbers increased constantly at higher soil moistures but dropped in the 1-liter containers in water-saturated soil (-0.003 MPa). Although S. glaseri did not infect hosts after 24 hr exposure to very dry soil (-40 MPa), some S. carpocapsae still established in hosts after this exposure when the soil was rewetted to -0.006 MPa. Generally, S. carpocapsae performed better in drier conditions than S. glaseri." |
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| Language: | English |
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| References: | 37 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Koppenhöfer, A. M., H. K. Kaya, and S. P. Taormino. 1995. Infectivity of entomopathogenic nematodes (Rhabditida: Steinernematidae) at different soil depths and moistures. J. Invertebr. Pathol. 65(2):p. 193-199. |
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Last checked: 10/06/2015
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MSU catalog number: SB 942 .J6 |
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