A species that consumes only one or a few types of food sources or forms associations with a narrow range of hosts. For example, certain collembola (tiny insects called springtails) specialize in eating specific species of fungi. (See generalist)

The amount of heat which is required in order to increase its temperature. Measured in

Application of water to the field by a sprinkler system which mimics a high intensity rainfall, can be mobile of fixed.

Soil particles more than 2 mm in diameter.

Growing crops in a systematic arrangement of strips or bands which provide vegetative barriers to wind and water erosion.

The process in which only a narrow strip of land needed for the crop row is tilled.

The aggregation of primary soil particles into units separated from each other by surfaces of weakness,

Technically, soil horizons below plough depth; usually B horizons.

Application of water to the field that flows over the land surface or in narrow channels (e.g.furrow or basin sprinkler).

The microrelief of the soil surface. It is important in water and wind erosion prediction because it influences local water storage (which will not runoff), trapping and emission of soil particles, abrasion of the soil surface by saltating grains, and the development of wind profiles. Surface roughness effects on saltating soil particles and aggregates are especially important in the prediction of wind erosion (USDA).