The State of Site-Specific Management for Agriculture Invited Chapters and the Proceedings of a Symposium Sponsored by Divisions S-6, S-4, S-8, and S-5 of the Soil Science Society of America, Division A-3 of the American Society of Agronomy, and the North Central Regional Committee on Site-Specific Management (NCR-180) in St. Louis, Missouri, 31 October 1995