'Volumetric water content' diaporamas de présentation

Douglas R. Cobos , Ph.D. Decagon Devices and Washington State University

Why does my soil moisture sensor read negative? 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

651 views • 53 slides

Soil texture and structure

Soil texture and structure. SUMBER: jpkc.njau.edu.cn/land/ ppt /4. Soil %20texture%20and%20structure. ppt ?. Soil density and bulk density Bobot Jenis (BJ) dan Bobot Isi (BI). Soil density ( or Particle density)

730 views • 40 slides

Water Content Measurement Methods and Field Applications

Water Content Measurement Methods and Field Applications. Doug Cobos Ph.D. Decagon Devices and Washington State University. Background. About the presenter Ph.D. in Soil Physics, 2003, University of Minnesota Director of Research and Development, Decagon Devices, Inc.

722 views • 40 slides

Chapter 7

Chapter 7. Soil Water. Objectives. After completing this chapter, you should be able to: Identify the role of water in plant growth Define the forces that act on soil water Classify types of soil water Discuss how water moves in and over the soil

376 views • 34 slides

Irrigation Management of Strawberry

Irrigation Management of Strawberry. Dr. John R. Duval Asst. Professor of Horticulture University of Florida http://strawberry.ifas.ufl.edu. Importance of proper Irrigation. Optimization of resources Minimization of inputs Social issues. Irrigation (The Basics).

777 views • 28 slides

Soil Water Potential

Soil Water Potential. Peter Cull ICT International. Water Content or Potential?. Water Content: Total amount of water in the soil Does not indicate how much is available to a plant. Water Potential: The amount of energy needed to extract water from soil

1.28k views • 28 slides

Soil Water Potential

Soil Water Potential. Peter Cull ICT International. Water Content or Potential?. Water Content: Total amount of water in the soil Does not indicate how much is available to a plant. Water Potential: The amount of energy needed to extract water from soil

1.18k views • 28 slides

Soil water retention curve

2.55k views • 24 slides

Quick Methods for Determining Plant Available Water

326 views • 21 slides

Convection

Convection. Convection: transfer of heat by a flowing liquid or gas 2 forms: Convection of sensible heat (heat in the form of a change in temperature) Convection of latent heat (heat in the form of a change of phase). Convection of sensible heat.

539 views • 14 slides

Lab 9 - Soil Water

516 views • 10 slides

Lab 9: Building a Soil Moisture Characteristic Curve or Moisture Release Curve

Lab 9: Building a Soil Moisture Characteristic Curve or Moisture Release Curve. A plot of water content, ?, vs. soil tension, or versus pressure, ?. We are Going to Create an Approximate Soil Moisture Characteristic Curve.

695 views • 10 slides

SEEP/W Flow Analysis

SEEP/W Flow Analysis. Simulates flow analysis and calculates the seepage flux value through a section Imported Cross-Sections where CSULA drilled borings Volumetric Water Content Grain size data Saturated Water Content Liquid Limit Coefficient of permeability K K - Saturation

399 views • 4 slides