Definition - What does Topsoil mean? topsoil meaning: 1. Therefore, in terms of growing plants and the like, topsoil is … Definition of topsoil in the Definitions.net dictionary. At this level, there are many more nutrients and bits of organic material than would be found at a deeper depth. While there is no standard topsoil definition based on composition, bit standard topsoil sold in bulk is usually made from the top 5 to inches of the earth's soil. ‘First, don't overmix the organic, topsoil and deeper layers, as this can bury organic matter too deeply.’ ‘Sprinkling a thin layer of topsoil or compost over the lawn will also help.’ ‘The thin layer of topsoil is constantly thawing and refreezing during the summer, and this makes any plant growth very difficult.’ (the soil which forms) the top layer of ground in which plants grow 2. the layer of earth in…. 1. the layer of soil on the surface Familiarity information: TOPSOIL used as a noun is very rare. topsoil meaning, definition, what is topsoil: the upper level of soil in which most pl...: Learn more. Learn more. Definition - What does Topsoil mean? The highest concentration of microorganisms and organic matter can be found in these top two to eight inches of soil; however, the amount of organic matter varies in different soil types. The depth of topsoil is measured from the ground surface to the first layer of densely packed soil known as the subsoil. The reason why it is called ‘topsoil’ is because it is on the uppermost layer of the dirt that you work with when gardening or seeding. It can be used for many purposes , including building gardens, improving drainage and fixing damaged lawns. Topsoil definition: Topsoil is the layer of soil nearest the surface of the ground . Topsoil, as the name would indicate, is a product that has been taken from the top few inches of the earth. Dictionary entry overview: What does topsoil mean? Topsoil is the upper layer of native soil. Facts to Know About Topsoil. Information and translations of topsoil in the most comprehensive dictionary definitions resource on the web. | Meaning, pronunciation, translations and examples In the context of viticulture, top soil refers to the top 2 to 8 inches of soil in the vineyard. • TOPSOIL (noun) The noun TOPSOIL has 1 sense:. Facts to Know About Topsoil. According to topsoil definition provided by expert environmentalists the layer of soil on the earth from 2 to 7 inches deep which contains large amount of microorganisms and organic matters in abundance can be called as topsoil. Meaning of topsoil. More amounts of topsoil can mean many things, including microbial diversity, greater reduction in chemical additive use by farmers, and increased ability to hold water. Topsoil is defined as the 2-8 inches of soil on the surface of the Earth. Few inches of soil in which plants grow 2. the layer of soil in the most dictionary. 2. the layer of earth in… would be found at a deeper depth has been taken from ground. 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