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The Movement of Nitrate Nitrogen Through Columns of Coarse-Textured Soil Materials¹

ABSTRACT

A laboratory investigation was undertaken in which the movement of nitrate nitrogen through columns of coarse-textured soil materials was studied. Eight soil materials from the Coastal Plain region of North Carolina were used, and the movement of added nitrates as a function of the porosity of these soils and the quantity of water added to the columns was determined. A multiple regression equation was developed which permitted an estimate of the mean nitrate movement from a knowledge of the value of these two variables.

¹ Contribution from the Dept. of Soils, North Carolina Agr. Exp. Sta., Raleigh. Published with the approval of the Director as Paper No. 780 of the Journal Series.

² Agronomist, Tobacco Research Board of Rhodesia and Nyassaland and Professor of Soils, North Carolina State College, respectively.

Received for publication January 28, 1957. Accepted for publication April 26, 1957.