Topsoil definition

Topsoil means a varying depth (up to 300 mm) of the soil profile irrespective of the fertility, appearance, structure, agricultural potential, fertility and composition of the soil;

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Topsoil means those horizons in a soil profile, commonly known as the “O” and the “A” horizons, containing organic material and includes deposits of partially decomposed organic matter such as peat;

Topsoil means the upper part of the soil which is the most favorable material for plant growth and which can ordinarily be distinguished from subsoil by its higher organic content and darker color.

Examples of Topsoil in a sentence

Topsoil placement shall be spread evenly on reshaped landform, as and when directed by the Employer, and to a thickness nominated by the Employer, typical nominal thickness being 1,000mm.
The Contractor shall exercise care over all areas to be disturbed where a soil resource exists, thereby optimizing the volume and quality of Topsoil recovered and hence to minimize any potential shortfall of Topsoil.
Identification of Topsoil will be carried out under the control of, and to the satisfaction of, the Employer.
The Contractor shall also exercise care in stripping, stockpiling and rehandling of the Topsoil in order to protect its structure.
In particular, to minimize compaction, only vehicles with low ground pressures shall be allowed to traffic the Topsoil.

More Definitions of Topsoil

Topsoil means the surface layer of soil which is generally more fertile than the underlying soil layers, which is the natural medium for plant growth and which can provide the plant growth, soil stability and other attributes necessary to meet the success standards approved in the reclamation plan.

Topsoil means the uppermost layer of the soil with the darkest color or the highest content of organic matter, generally referred to as the “A” horizon. In areas where the “A” horizon is determined by a certified professional soil scientist to be less than 12 inches, the topsoil depth shall include both the “A” and the “Bw” horizons as determined by the March 2017 United States Department of Agriculture Soil Survey Manual. Topsoil depth is to be determined under the supervision of a certified professional soil scientist.

Topsoil means the A and E soil horizon layers of the four (4) master soil horizons.

Topsoil means the top layer of soil that can support vegetation. It shall include turf acceptable for turfing.

Topsoil means the weathered surface soil, including the organic layer, in which plants have most of their roots.

Topsoil means the surface (top) layer of a soil profile, which is more fertile, darker in colour, better structured and supports greater biological activity than underlying layers. The surface layer may vary in depth depending on soil forming factors, including parent material, location and slope, but generally is not greater than about 300 mm in depth from the natural surface.

Topsoil means the natural medium located at the land surface with favorable characteristics for growth of vegetation, which is normally the A or B, or both, soil horizon layers of the four soil horizons.