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Relationship of Soil Classification to Other Branches of Soil Science¹

ABSTRACT

A schematic diagram is presented as a basis for considering the interrelationships among the three general areas of soil science and the direct and indirect contributions of each to interpretations of soil types with respect to yield estimates, productivity ratings, and soil groupings for specific purposes. It is emphasized that there is need for more interpretative data based on soil type, that such data must be more quantitative and that this will require the closer working relationship of specialists in different areas of soil science. Specialists in soil classification and those in soil fertility and management, in particular, need to collaborate more closely in developing interpretative information relating to productivity ratings, and alternative system of management for different soil types. This will require more "team research," but such team research cannot be at the expense of basic research in the individual areas. It is pointed out, for example, that just as basic research in soil chemistry and mineralogy is needed for the improvement of soil classification, so basic research in soil morphology, genesis and classification is essential to progress in soil chemistry, mineralogy and other areas of soil science.

¹ Journal Paper No. J-3267 of the Iowa Agr. and Home Econ. Exp. Sta., Ames, Iowa. Project 154. Presented before joint meeting of Divs. V and VI, Soil Science Society of America, Nov. 13, 1956, at Cincinnati, Ohio.

² Professor of Soils and Head, Department of Agronomy, Iowa State College.

Received for publication April 22, 1957. Accepted for publication November 12, 1957.