Potassium in Swedish agricultural soils - sources and sinks under present management. Focus on Soils symposium in Uppsala, 14-16th of September 2005, 'Managing soils for the future', Programme and Abstracts. (A Gärdenäs & E Karltun Eds.), Uppsala, Sweden
Andrist-Rangel, Ylva; Simonsson, Magnus; Andersson, Stefan; Öborn, Ingrid; Hillier, S