A FLOTATION METHOD FOR THE RAPID MEASUREMENT OF THE WET BULK DENSITY OF SOIL CLODS |
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| Authors: | D J CAMPBELL |
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| Institution: | National Institute of Agricultural Engineering Scottish Station, Bush Estate, Paicuik, Midlothian |
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| Abstract: | A flotation method for the rapid measurement of the wet bulk density of soil clods is described in which the clods are sprayed with a waterproof coating of a resin and then immersed sequentially in liquids of different specific gravity. It is compared with the wax coating method for a selection of soil textures and moisture contents and shown to be ten times as rapid when used to measure wet bulk density with an accuracy of ± 0.05 g cm-8. The flotation method was used to show that, for three contrasting soils, clod wet bulk density is independent of clod size. |
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