top·soil — /ˈtɑːpˌsojəl/ noun [noncount] : the upper layer of soil in which plants have most of their roots rich, well fertilized topsoil … Useful english dictionary
Top — Top, n. [AS. top; akin to OFries. top a tuft, D. top top, OHG. zopf end, tip, tuft of hair, G. zopf tuft of hair, pigtail, top of a tree, Icel. toppr a tuft of hair, crest, top, Dan. top, Sw. topp pinnacle, top; of uncertain origin. Cf. {Tuft}.]… … The Collaborative International Dictionary of English
Top and but — Top Top, n. [AS. top; akin to OFries. top a tuft, D. top top, OHG. zopf end, tip, tuft of hair, G. zopf tuft of hair, pigtail, top of a tree, Icel. toppr a tuft of hair, crest, top, Dan. top, Sw. topp pinnacle, top; of uncertain origin. Cf.… … The Collaborative International Dictionary of English
Top minnow — Top Top, n. [AS. top; akin to OFries. top a tuft, D. top top, OHG. zopf end, tip, tuft of hair, G. zopf tuft of hair, pigtail, top of a tree, Icel. toppr a tuft of hair, crest, top, Dan. top, Sw. topp pinnacle, top; of uncertain origin. Cf.… … The Collaborative International Dictionary of English
Soil mark — Soil marks are differences in soil colour as a result of archaeological features. They can be seen when a ploughed out earthwork has left hard dry material of a former bank and damper wetter material from a former ditch [Mick Aston, Interpreting… … Wikipedia
Soil horizon — Soil samples illustrating horizons (subsoil on right) A soil horizon is a specific layer in the land area that is parallel to the soil surface and possesses physical characteristics which differ from the layers above and beneath … Wikipedia
Soil pH — is the pH of soil water. It is based on the measurement of pH, which depends on the activity of hydrogen ions (H+) in a solution.There are many different methods to collect soil water, all which influence the measured soil pH in one way or… … Wikipedia
Soil morphology — is the field observable attributes of the soil within the various soil horizons and the description of the kind and arrangement of the horizons. [cite book | last = Buol | first = Stanley W. | authorlink = | coauthors = Southard, Randal J.,… … Wikipedia
top dressing — top ,dressing noun uncount TECHNICAL FERTILIZER that is spread on top of soil to make crops or grass grow faster … Usage of the words and phrases in modern English
Soil food web — The soil food web is the community of organisms living all or part of their lives in the soil. It describes a complex living system in the soil and how it interacts with the environment, plants, and animals. Introduction Food webs describe the… … Wikipedia