Porous ceramic soil moisture samplers, an application in lysimeter studies on effluent spray irrigation

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Abstract
Porous ceramic soil moisture samplers were installed at three depths within a packed lysimeter. No leachate was produced, as the bottom 50 cm of the soil column was impervious yellow clay. Soil moisture samples were readily obtained from the porous ceramic samplers. The non-entry of the test organism Escherichia coli into the 1-bar samplers in the presence of clay suggests that such a sampling system cannot be usefully applied to studies requiring enumeration of the soil microflora or organisms introduced by a soil-applied effluent, but can readily be applied to the study of mobile chemical substances.

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