Earthworm Castings as Plant Growth Media
www.bae.ncsu.edu/topic/vermicomposting/vermiculture/castings.html

Effect of Vermicompost, Inorganic and Biofertilizer Application on Fodder Yield and Quality in Maize and Cowpea Intercropping System
http://crops.confex.com/crops/wc2006/techprogram/P18737.HTM

Comparing Vermicomposts and Composts
www.jetcompost.com/reference/july98.htm

Vermicomposts Suppress Plant Pest and Disease Attacks
www.jgpress.com/archives/_subscription_required/000128.html

Overview of Earthworm Casts and a Comparison with Compost
www.ag.ohio-state.edu/~hala73/literature_review_on_earthworms.htm

Earthworm Castings Increase Germination Rate and Seedling Development of Cucumber
http://msucares.com/pubs/researchreports/rr22-6.htm