Earth science

Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Soil science

drainage curves

Earth science; Soil science

Design curves giving prescribed rates of surface runoff for different levels of crop production, and which may vary according to size of drainage area.

fertilizer

Earth science; Soil science

Any organic or inorganic material of natural or synthetic origin (other than liming materials) that is added to a soil to supply one or more plant nutrients essential to the ...

land capability class

Earth science; Soil science

One of the eight classes of land in the land capability classification of the U. S. Natural Resource Conservation Service; distinguished according to the risk of land damage or ...

soil type

Earth science; Soil science

Formerly in the U. S. soil classification systems prior to publication of USDA Soil Taxonomy (1975). (i) The lowest unit in the natural system of soil classification; a ...

protocooperation

Earth science; Soil science

An association of mutual benefit to two or more species but without the cooperation being obligatory for their existence or the performance of some function.