VISUAL SOIL IDENTIFICATION

1.   Distinctive dark colour indicates organic matter.

2.   Fresh wet organic soils usually have a distinctive odour of decomposed organic matter.

      If odour is faint, heat the sample slightly. This intensifies the odour.

3.   Describe appearance of fresh fracture of intact sample (granular, smooth-dull, smooth-glossy).

      Rub small quantity of soil between fingers and describe sensation (Floury smooth, gritty, sharp).

4.   Take a small representative sample in the form of a soil pat of size of about 5 cc and add enough water to nearly

     saturate it. Place the pat in the open palm of one hand and shake horizontally striking vigorously against the other

     hand several times. Squeeze the pat between the gingers. The appearance and disappearance of the water

     with shaking and squeezing is referred to as reaction* intensity of phenomena observed.

5.   Describe shape (angular, subangular, rounded, and well rounded). If mica is present indicate mica

      content (slightly, moderate or highly micaceous).

6.   Take a small quantity of soil and add enough water until it has the consistency of a putty. Make a ball out of it

      and allow it to dry. Note results as severe, mild or none depending on intensity of cracking observed.

* Describe the results as quick, slow or none depending on the case.