Soil sampling procedure fact sheet link
Check out the video on soil sampling from the Victorian DPI at this link.
Soil testing of pastures is crucial for assessing and improving nutrient and structural status. This video demonstrates how to plan and carry out soil sampling to make sure you get a reliable and useful result.
Soil texture (sand, silt & clay) or how the soil 'feels'
Soil testing and interpretation for vegetable crops (link to Soil Wealth web site)
Gypsum - by INCITEC PIVOT
Does biochar influence soil physical properties and soil water availability? Tasmanian research 2014
Biochar factsheet from GRDC website
Biochar research factsheets from CSIRO website
Report on paddock scale biological supplements trials in Tasmania (including biochar)