Countryside Survey 2007 (Soils) Preparatory Phase II: Soil bulk density sampling

It is desirable to measure soil bulk density as a variable in CS2007. The most preferable method for measuring bulk density is usually the ‘thumb crusher’ corer, with the double walled cylinders. However, in the Countryside Survey, this is not possible, due to the survey logistics and health and safety issues. The most efficient method would be to use either one of the two pipes already in use for the chemistry and biology samples. The aim of this investigation is to determine their accuracy in determining bulk density, and to assess whether another method would be more suitable. Field and laboratory notes made during the investigation will also be used to make recommendations to update the soil sampling protocols in the Countryside Survey Field Handbook.