Soil Acidity and Nutrient Stratification As Affected By Long-Term Tillage and Nitrogen Fertilization.
Augustine K. Obour, 1232 240th Ave, Kansas State University, Hays, KS, US, Phillip W. Stahlman, 1232 240th Ave., Kansas State University, Hays, KS and Eric Obeng, College of Agriculture, Food and Natural Resources, Prairie View A&M University, Prairie View, TX, US