A Report on Field Research in Soils

The 1977 edition of the "Bluebook" 1s a compilation of data collected and analyzed throughout Minnesota. This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.Sincere appreciation is expressed for materials and/or financial assistance or program support from several organizations Including: Potash and Phosphorus Institute of North America, CENEX, Farmland, Midland Cooperatives and Howe Incorporated, Minnesota Crop Improvement Association, National and State Soybean Associations, Minnesota Golf Course Superintendents Association, Sincere appreciation is expressed for materials and/or financial assistance or program support from several organizations Including: Potash and Phosphorus Institute of North America, CENEX, Farmland, Midland Cooperatives and Howe Incorporated, Minnesota Crop Improvement Association, National and State *\ Soybean Associations, Minnesota Golf Course Superintendents Association, Minnesota Limestone Producers Association, U.S. Gypsum Corporation, Minnesota Plant Food and Chemicals Association, Minnesota Soil and Water -i Conservation Committee, The Minnesota Resources Commission, the Minnesota , • State Planning Agency, The Water Resources Research Center of the graduate School, The Staples Vo-Tech Institute, The Red River Valley Potato and Sugar Beet Growers Associations, The Tennessee Valley Authority and the North Central Forest Experiment Station. Minnesota Limestone Producers Association, U.S. Gypsum Corporation, Minnesota Plant Food and Chemicals Association, Minnesota Soil and Water -i Conservation Committee, The Minnesota Resources Commission, the Minnesota , • State Planning Agency, The Water Resources Research Center of the graduate School, The Staples Vo-Tech Institute, The Red River Valley Potato and Sugar Beet Growers Associations, The Tennessee Valley Authority and the North Central Forest Experiment Station