A TDR-pressure cell design for measuring the soil-water retention curve

TDR pressure cell for monitoring water content retention and bulk electrical conductivity curves in undisturbed soil samples

Soil water thermodynamic to unify water retention curve by pressure plates and tensiometer

Erik Braudeau*, Gaghik Hovhannissian, Amjad T. Assi and Rabi H. Mohtar* 1 Qatar Environment and Energy Research Institute, Qatar Foundation, Doha, Qatar 2 Pédologie Hydrostructurale, Institut de Recherche pour le Développement France Nord, Institut de Recherche Pour le Développement, Bondy, France 3 Unité Mixte de Recherche 242, Institut d’Ecologie et des Sciences de l’Environnement de Paris, I...

Estimation of Water Retention Curve for Unsaturated Fine Soils

In order to obtain the soil water retention curve of an unsaturated soil which is defined as the relationship between water content and suction, extensive laboratory tests are essential. These laboratory tests are usually costly and time consuming. Moreover, for most practical problems, it has been found that approximate unsaturated soil properties are adequate for analysis. Thus, empirical pro...

A Variable-Volume TDR Probe for Measuring Water Content in Large Soil Volumes

concluded that coaxial probe design was superior to two-wire probes with a balancing transformer. Management of favorable conditions for plant growth within parTopp and Davis (1985) extended measurement capatially wet soil volumes under drip irrigation presents a measurement bilities from a small volume (point) to multiple depths challenge. Typically, soil water status is determined from a sing...

Chemical migration during soil water retention curve evaluation.

Wetting and drying (W-D) cycles can induce important elemental migrations in soils. The main purpose of this work was to study the possible existence of soil chemical elemental migrations in samples submitted to repeated W-D cycles during evaluations of soil water retention curve (SWRC). The experimental measurements were carried out by Atomic Absorption Spectrometry (AAS) for Ca(2+), Mg(2+) an...