Assessment of Soil Water Thermodynamic to Unify Water Retention Curve by Pressure Plates and Tensiometer| Chapter 5 | Novel Perspectives of Geography, Environment and Earth Sciences Vol. 3

 In soil skill, skilled are two famous standard procedures for weighing the soil liquid characteristic curve: the pressure plate plan providing the pF curve and the tensiometer providing the soil assimilation pressure curve. These two practical curves are mainly used for typifing and posing the soil water characteristics. The two approaches are established two very various calculation ideas, and material unity of the calculated variables has never existed illustrated. The currently thermodynamic expression of the pedostructure water memory curve h(W) admits us examining this unity, two together in theory and experimentally. This authorizes the object of the item. We establish that the pressure plate arrangement supports correct calculation points of the water memory curve of the pedostructure h(W) but on the condition that h is not deliberate usually, as prepared the air pressure used to the sample. Instead, in accordance with the thermodynamic belief grown attending, h must be determined as the mathematical of the air pressure used to the pedostructure sample to correspond to the assimilation pressure straightforwardly calculated for one tensiometer. We therefore show by virtue of what the hydrostructural limits of the hypothetical curve equating maybe supposed from some calculated curve, however calculation method. An use instance utilizing published pF curves is likely.

Author(s) Details:

Erik Braudeau,
Qatar Environment and Energy Research Institute, Qatar Foundation, Doha, Qatar and Pédologie Hydrostructurale, Institut de Recherche pour le Développement France Nord, Institut de Recherche Pour le Développement, Bondy, France.

Gaghik Hovhannissian,
Unité Mixte de Recherche 242, Institut d'Ecologie et des Sciences de l'Environnement de Paris, Institut de Recherche pour le Développement France Nord, Institut de Recherche Pour le Développement, Bondy, France.

Amjad T. Assi,
Qatar Environment and Energy Research Institute, Qatar Foundation, Doha, Qatar and Biological and Agricultural Engineering Department, Texas A&M University, College Station, TX, USA.

Rabi H. Mohtar,
Biological and Agricultural Engineering and Zachry Departments of Civil Engineering, Texas A&M University, College Station, TX, USA.

Please see the link here: https://stm.bookpi.org/NPGEES-V3/article/view/9375