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).

Water bodies flowing over or resting on the surface of a land mass, natural waterway (rivers, streams, brooks and lakes) or artificial waterway, including irrigation, industrial and navigation canals, drainage systems and artificial reservoirs.

Policies and practices directed at increasing the productivity (

The use of land resources, including soils, water, animals and plants, for the production of goods to meet changing human needs, while simultaneously ensuring the long-term productive potential of these resources and the maintenance of their environmental functions (WOCAT).

The earthy odor we smell from fresh tilled soil are the gases given off from micro-organisms living in the soil. The more micro-organisms working, the stronger the odor

Overview of Strengths, Weaknesses, Opportunities and Threats of a subject (Humprhey, 2005). Strengths are HELPFUL to achieving the objectives of the SICS and have an INTERNAL focus (referring to attributes of the SICS), and weaknesses are HARMFULL to achieving the objectives of the SICS and also have an INTERNAL focus. Opportunities are HELPFUL to achieving the objectives of the SICS and have an EXTERNAL focus (attributes of the pedo-environmental zones), and threats are HARMFULL to achieving the objectives of the SICS and have an EXTERNAL focus.

Is when separate elements produce a greater effect when acting together than would be produced if they acted separately.