COMPARING CHLORIDE TRANSPORT IN UNDISTURBED AND DISTURBED SOIL COLUMNS UNDER TURFGRASS CONDITIONS

Transport of surface applied chloride (Cl) in undisturbed soil columns with intact macropores was compared to disturbed, repacked columns of the same soil, The total amount of Cl that leached from 20 cm deep so il columns was 2.0 times higher for the undisturbed columns than for t he disturbed columns, and the total quantity of leachate was 1.4 times higher for undisturbed columns than for the disturbed columns. Chlori de recovered (mass basis) in layer #2 (6.7 to 13.4 cm) was 1.79 times higher and in layer #3 (13.4 to 20.0 cm) was 2.72 times higher for the disturbed soils than for the undisturbed. For the plant and thatch la yer (0.0 to 2.0 cm) the opposite was observed, total Cl recovered from the undisturbed columns was 2.4 times higher than in the disturbed co lumns.