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plant SCi unit 5B
unit 5 terms 13-24
| Term | Definition |
|---|---|
| decayed or partially decayed remains of plants and animals found in the soil | organic matter |
| the measure of acidity or alkalinity of the soil | pH |
| space between soil particles | pore space |
| the largest of the soil particles | sand |
| the middle sized of the soil particles | silt |
| the ability of soil to provide nutrients for plant growth | soil fertility |
| a cross section of the soil, usually 3 to 4 feet deep | soil profile |
| the process of preventing growth of plants in a soil | soil sterilization |
| the way soil particles are arranged | soil structure |
| the amount of sand, silt, and clay in soil | soil texture |
| 23. subsoil—the layer of soil below the topsoil | subsoil |
| the layer of soil found on the surface | topsoil |