soil field tests

Several field tests evaluate soil texture from a soil sample moistened to the point where it just begins to adhere to the fingers (the sticky point). The sample is tested for smoothness by rubbing between finger and thumb, and for cohesion by the extent to which it can be rolled into a ball or thread. Polish and stickiness can also be observed.



This definition is abridged from A – Z of tree terms: A companion to British arboriculture.
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