Properties and Classification of Soils of the Swedish Long-Term Fertility Experiments: III. Sites at Västraby and S. Ugglarp

Abstract

Abstract The Vastraby soil (Kattarp) was Classified as a fine, mixed, mesic Typic Endoaquoll according to the Soil Taxonomy and as a Haplic Phaeozem according to the FAO revised legend. The soil profile consisted of a very dark grey-coloured Aphorizon and a subsoil with a calcium carbonate content (0.4-21.4%) increasing with depth. The textural composition of the Vastraby profile was found to be 24% clay, 20% silt (2-60 μm) and 56% sand in the Ap-horizon and 55% clay, 42% silt (2-60 μm) and 3% sand in the subsoil, on average. The bulk density was highest between 30 and 50 cm depth (1.70 kg dm−3), average values for 0-30 cm depth and the subsoil were 1.59 kg dm−3 and 1.40 kg dm−3, respectively. Assuming a groundwater table of 1 m, the amount of plant available water was 167 mm. Amounts of carbon and nitrogen in the Ap-horizon of the Vastraby soil were 73 t C ha−1 and 5.6 t N ha−1, respectively, while the subsoil to a depth of 1 m contained 42 t C ha−1 and 5.4 t N ha−1. The cation exchange capacity (CEC) am...