NC-174 Regional Research Committee / State Agricultural Experiment Station Committee / Soil and Water Conservation Society / USDA / National Research Council / NCR-59 Regional Research Committee on Soil Organic Matter and Soil Quality / National Soil Erosion-Soil Productivity Planning Committee / Soil Science Society of America / US Federal Reserve / Kansas State University / /
Foreword The midwestern United States includes one of the largest areas of intensively cultivated agricultural cropland in the nation, with large amounts of soil tilled annually to continuous production of corn, soybean