The increased interest in redworms and their use as biological agents for several purposes has led to inquiries, by avocado growers and redworm industry representatives, about the worm's effectiveness in controlling avocado root rot caused by Phytophthom cinnamomi. At the request of the redworm industry, we initiated a greenhouse experiment to determine if the worms had any effectiveness in reducing root rot on avocados.

The authors thank Malthus Farms, San Marcos, California, for contributing worms and manure used in the experiment.