Effect of biochar on phosphorus sorption and clay soil aggregate stability

摘要: Abstract Soil structure is one of the key properties affecting productivity soils and environmental side effects agricultural soils. Poor surface soil increases risk erosion by water eroded clay-sized particles can carry adsorbed phosphorus (P) to waters, thus inducing eutrophication receiving waterways. Management practices, e.g. reduced tillage, used reduce lead enrichment P in uppermost layers, which leads elevated for dissolved loss runoff water. In this study, we aimed identify whether biochar (BC) could be clay improving aggregate stability. Moreover, tested BC addition would change sorption affinity help P. One sandy two clayey were amended with (0, 15 30 t ha − 1 ) after a 3-week incubation, wet-sieving method was measure release colloidal stability aggregates. The onto surfaces estimated Q/I (quantity/intensity) plot technique. here had very low did not increase incubated However, soils, additions increased detachment material. induced changes that beneficial control thereby aid reducing particulate losses from fields.