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| Author(s): | Hsiao W.-F., All J.N. |
| Year: | 1998 |
| Title: | Survey of the entomopathogenic nematode, Steinernema carpocapsae: (Rhabditida: Steinernematidae) natural populations and its dispersal in the field |
| Citation: | Chinese Journal of Entomology. 18:(1) 39-49. . |
Abstract:
The effect of cropping practices on populations of the entomopathogenic nematode, Steinernema carpocapsae, in 3 field crops was examined in Taiwan. Populations of S. carpocapsae in fallow and bare plots were very low in February and March 1988, due to snow which fell on 9 February 1988. Higher populations of S. carpocapsae were found in no-tillage corn [maize] plots than in conventional-tillage plots from October 1988 to August 1989. Populations of S. carpocapsae in no-tillage and conventional tillage maize, sorghum, and soyabean fields decreased over time from October 1988 to April 1989. Five months after application, no infective juveniles were recovered from most of the plots, except for those which had received a conventional-tillage maize treatment. The number of S. carpocapsae in soil covered with maize and sorghum debris was significantly lower after 30 days at 25 deg C. In the horizontal movement study, S. carpocapsae was capable of moving 3.5 cm day-1 in bare soil plots and 7.5 cm in rye mulch-covered plots, indicating that the mulch enhanced movement in agriculture systems |
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