CTC18 Earthworms and Macropores. Panel. Frank Gibbs and 4 others. 

Panel discussion. Frank Gibbs, USDA-NRCS (retired); Doug Smith, USDA-ARS; Mark Williams, USDA-ARS; Merrin Macrae, U. of Waterloo (Canada); and Eileen Kladivko, Purdue U. Moderated by Jessica D'Ambrosio, The Nature Conservancy. Pros and cons of macropores, including earthworm channels, and their role in rainwater and nutrients moving quickly into tile lines and streams.