ScienceDaily (Nov. 17, 2011) — Marketable yields of organic horticultural crops frequently fall below those of conventional crops; this and other factors restrict widespread adoption of organic production. Researchers recently studied the growth and yield responses of tomatoes grown in organic substrates amended with vermicompost and compared the results with plants grown in a popular growing medium. "More research in this area is needed to provide a base of information that will lead to the expansion of the organic sector, especially in the greenhouse industry, to meet consumer demands and preferences," they explained.
http://www.sciencedaily.com/releases...1117140621.htm