1612: Abundance of naturally occurring entomopathogenic nematodes and establishment of inoculated Steinernema feltiae in an organic cropping system

Nielsen, Otto and Philipsen, Holger (2005) Abundance of naturally occurring entomopathogenic nematodes and establishment of inoculated Steinernema feltiae in an organic cropping system . Paper presented at 9th European meeting in the International Organisation of Biological Control, Salzau, Germany, May 2003; Published in IOBC Bulletin 28(3), page pp. 31-34.

Summary

The abundance of entomopathogenic nematodes and soil dwelling stages of plant specific insects was studied in an organic cropping system for two years. In addition was the survival of an inoculated strain of Steinernema feltiae studied. The abundance of naturally occurring entomopathogenic nematodes was in general at a low level throughout the observation period (0-26 % positive samples). Inoculated S. feltiae established well when pea was grown in the same or in the following year whereas the nematodes were less able or unable to establish in the other crops (cabbage, carrots, barley, alfalfa/clover). The successful establishment of nematodes, and the abundance in general, correlated well with the presence of plant specific insects.

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