Parasitic nematodes are tiny, parasitic worms that are not harmful to humans, animals, or plants. These occur naturally and can be purchased to control clearwing borers and cutworms.
The impact of internal parasites on flock health
Beneficial Organisms : Got Pests? : Board of Pesticides Control
Compost and Potting Soil Problems
8. Integrated Pest Management (IPM)
Pathogens, Free Full-Text
Common Backyard Beneficials — Plant & Pest Advisory
Ch 4. The Living Soil - SARE
How to Use Beneficial Nematodes in IPM - Greenhouse Product News
The fungus is coming
Characterization of soil nematode communities in three cropping
Invasive Fruit Pest Guide for Utah by Utah State University
Parasitoids University of Maryland Extension