PPT-Soil Water Potential Measurement

Doug Cobos PhD Decagon Devices and Washington State University Two Variables are Needed to Describe the State of Water Water content and Quantity Extent Related Measures. Doug . Cobos, Ph.D.. Decagon Devices and Washington State University. Two Variables are Needed to Describe the State of Water. Water content. and. Quantity . Extent . . . Related Measures. Topics. Soils. Soil water properties. Soil water balance. Reading: Applied Hydrology Sections 4.3 and 4.4 . (Green-. Ampt. method). Soil Map of the United States. Developed from SSURGO – Soil Survey Geographic Database. Dr. Greg Butters. Soil Physics. Department of Soil and Crop Sciences. A lecture for SOCR 571- Foundations of Soil Science. Soil water in a complex, multiple process domain. Outline. Fundamental relationships. Introduction. Zeta potential is the charge that is located at the slipping point of a particle in a medium.. Zeta . potential . is used . mostly in Colloidal chemistry. .. If the magnitude of zeta potential is > 30mV then it is in stable suspension. Improving accuracy of dielectric soil moisture sensors. Douglas R. . Cobos. , Ph.D.. Decagon Devices and . Washington State University . Outline. Introduction. VWC definition. Direct vs. indirect measurement methods. Silvia Tobias. 1. , Franz Conen. 2. , Christine Alewell. 2. 1. Swiss Federal Institute for Forest, Snow and Landscape Research WSL. 2. University of Basel, Dep. Environmental Sciences. Outline. Soil sealing: a core reason for land degradation in industrialised countries. By the end of this section you will be able..... To name and explain the causes of soil erosion.. Describe in detail how human activities can cause soil erosion.. Name and explain the primary methods of soil conservation.. http://www.neosci.com/demos/10-1041_cell processes/Presentation Images/tutorials/3.01.jpg. Pressure potential . ψ. p. . =. amount . of pressure on the container surrounding the . solution. Water is less likely to move. (. WA) Maps and Reports from Web Soil Survey. http://websoilsurvey.nrcs.usda.gov/app/. Contact:. Brad Duncan. Assistant State Soil Scientist. Spokane NRCS State Office. Brad.Duncan@wa.usda.gov. 509-323-2982. s. oil test interpretation. Weston Miller, . OSU Extension Service. Preview of presentation. Safety precautions. General . soil quality assessment . How to take a soil test. What to test for. Interpreting results. A . number. A . unit. Example: . 5. cm. Scientists (and we will) use the SI system. Système. International . d’unités. The SI units = METRIC. There are only 3 countries in the whole world using the ENGLISH SYSTEM of measurement. . Rani Abraham. Syllabus portions. The . chemistry of . processes in Lithosphere; Redox status in soil. . pE. pH predominance diagrams for . redox sensitive . elements. Acidity in soil materials. Acid neutralization capacity and . 1. . . INTRODUCTION. Civil and environmental engineering includes the conception, analysis, design, construction, operation, and maintenance of a diversity of structures, facilities, and systems. All are built on, in, or with soil or rock. The properties and behavior of these materials have major influences on the success, economy, and safety of the work. Figure 3-24. Fig. 3-24a, p. 69. Mosaic of closely packed pebbles, boulders. Weak humus-mineral mixture. Dry, brown to reddish-brown with variable accumulations of clay, calcium and carbonate, and soluble salts.