The hole should be at least 75cm deep, she says. As well as digging, touch is important: “Smell the soil and look at the colour.” The first exercise is to split the soil into different horizons.

Illuviation is the process of deposition of soil material removed from one horizon to another, usually from an upper to a lower horizon as material is washed down profile by percolating water ...

R. M. Knaus, D. L. van Gent, Accretion and Canal Impacts in a Rapidly Subsiding Wetland. III. A New Soil Horizon Marker Method for Measuring Recent Accretion, Estuaries, Vol. 12, No. 4, Dedicated ...

Recent studies on the effects of calcium (Ca) additions on soil carbon (C) cycling in organic soil horizons present conflicting results, with some studies showing an increase in soil C storage and ...