| A | B |
|---|
| Suction | The pressure required to move water from the soil. |
| Centimeter Water | A unit of pressure or suction equal to the pressure exerted at the bottom of a layer of water one centimeter deep. |
| Atmosphere | Another unit of pressure or suction equal to about 14.7 pounds. |
| Bar | Another unit of pressure or suction equal to about 1 atmosphere. |
| Water Table | Another soil condition where the suction equals zero. |
| Moisture Equivalent | A soil condition where the matric suction equals approximatly 1/2 atmosphere or 500 centimeters. |
| Wiliting Coefficient | A soil condition where the metric suction equals about 31 atmospheres. |
| Suction Gradient | A soil condition where part of the soil has a lower suction than another part. |
| Water Content | The amount of water in soil. |
| Saturation | A soil condition when the pores are filled with water. |
| % Pore Saturation | The percentage of the soil pore volume which is water-filled. |
| Field Capacity | The water content of a deep soil after 48 hours' drainage without any loss of water. |
| Container Capacity | The water content of a container soil following complete drainage without any water loss. |
| Permanent Wilting %eg | The soil water content at which a plant can absorb sufficeint water to keep from wilting even in water saturated atmosphere. |
| Water-Depth-Ratio | The volume of water contained per volume of soil. |
