
TY  - JOUR
A1  - Reichardt, K. 
A1  - Timm, L. C. 
A1  - Bacchi, O. O. S. 
A1  - Oliveira, J. C. M. 
A1  - Dourado-Neto, D. 
T1  - A parameterised equation to estimate soil hydraulic conductivity in the field
JF  - Soil Research
JO  - Soil Res.
Y1  - 2004
VL  - 42
IS  - 3
SP  - 283
EP  - 287
KW  - unit gradient, internal drainage, soil water storage.
UR  - https://doi.org/10.1071/SR03117 
N2  - The description of soil water dynamics using the Darcy&#8211;Buckingham approach involves the determination and use of soil hydraulic conductivity K v. soil water content &#952; functions. Many of the methods developed for the measurement of K are based on simplifying assumptions, such as the unit gradient and the choice of fixed models for the K(&#952;) relation. The need of quick, simple, and inexpensive methods to measure K(&#952;) in the field using a large number of replicates has also led soil physicists to develop simple methods. This paper presents a procedure that makes use of parameters of equations used to explain the internal water drainage process, and that naturally leads to the exponential character of the K(&#952;) relation. Results show that the parameterised equation represents a more rigorous estimation of K(&#952;), compared with the methods that assume unit gradient. 
ER  -

