Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-23T02:52:30.628Z Has data issue: false hasContentIssue false

Some investigations on the electrical method of soil moisture determination

Published online by Cambridge University Press:  27 March 2009

Thomas Deighton
Affiliation:
School of Agriculture, Cambridge.

Extract

In this paper an examination is made of the processes operative and the limits of accuracy of the electrical method of determining soil moisture.

The resistance over a small plot is found to vary under similar conditions and it is concluded that these differences are most probably due to actual differences in moisture or other factors.

The effect of the distance apart of the electrodes is investigated and a probability of a minimum resistance between two electrodes being observed under certain conditions is indicated.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1922

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

(1)Whitney, M. Some Physical Properties of Soil in their Relation to Moisture and Crop Distribution. U.S. Dept. Agric., Weather Bureau Bull. No. 4, 1892.Google Scholar
(2)Whitney, M. and Means, T. H. An Electrical Method of determining the Soluble Salt Content of Soils. U.S. Dept. Agric, Division of Soils, Bull. No. 8, 1897.Google Scholar
(3)Gardner, F. D. The Electrical Method of Moisture Determination in Soils; Results and Modifications in 1897. U.S. Dept. Agric, Division of Soils, Bull. No. 12, 1898.Google Scholar
(4)Briggs, L. J. Electrical Instruments for Determining the Moisture, Temperature, and Soluble Salt Content of Soils. U.S. Dept. Agric, Division of Soils, Bull. No. 15, 1899.Google Scholar
(5)Leblanc, M. and Schick, . Wechselstromelectrolyse. Zeitschr. f. Phys, Chem. 46 (1903), 213; also Löb, A. Zeitschr. f. Electrochem. 12 (1906), 79.Google Scholar
(6)Mascart, E. and Joubert, J.Electricity and Magnetism, 1, 206. [Eng. Trans. by Atkinson, E., London, 1883.]Google Scholar
(7)Quikcke, G.Ann. d. Phys. u. Chem. 5 Reihe, Bd. 17 (1869), 413.Google Scholar
(8)Terzaght, Ch.New facts about surface friction. The Physical, Review, 16 (1920), No. 1.Google Scholar
(9)Laing, M. E. (Miss) and McBain, J. W.The Investigation of Sodium Oleate solutions in the three Physical States of Curd, Sol and Gel. Trans. Chem. Soc. 117 (1920), 1506.CrossRefGoogle Scholar
(10)Bouyoucos, G. J.Measurement of inactive or unfree Moisture in the Soil by means of the Dilatometer Method. Journ. Agric. Res. 8 (1917), 195.Google Scholar