LEACHING OF CALCIUM IN A FINE SANDY LOAM AS INDICATED BY Ca45

Abstract

Leaching of soil columns in the laboratory with up to 40 ins. of water removed substantial fractions of the native and applied Ca, although the distance Ca moved from a particular layer was slight. Apparently, Ca moved down the column by a continuous series of displacements, the Ca appearing in the leachates being that originally present in the lower layers of the soil. The total amt. of Ca leached from a heavily fertilized soil was greater when the soil had been fallowed than when cropped, although the distance any particular Ca atom moved was not affected.