%0 Journal Article %T Direct Colorimetric Measurement of Ammonium in Potassium Chloride Extracts of Soils %A Dorich, R. A. %A Nelson, D. W. %J Soil Science Society of America Journal %V 47 %N 4 %P 833-836 %@ 0361-5995 %D 1983-07-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve