This slender volume does not explain how to grow wine grapes, but explains to people who already grow grapes commercially how to do so within the parameters of organic certification. Specialists in grapes as well as more general agricultural scientists from California and up the west coast of the US address production issues, economics, weed and disease management, the process of conversion from conventional to organic culture, and organic certification and registration. The information has been compiled and updated from a series of pamphlets published earlier. Many color photographs are included. Annotation 2012 Book News, Inc., Portland, OR (booknews.com)