Author:
Singaravel R.,Viswanathan G.,Seenivasan M.
Abstract
The effect of clay and humic materials in the control of nitrate leaching from sandy soil was established through a column experiment. In a PVC column with 3 inches dia and 45 cm length packed with sandy soil, six leaching at 15 days intervals were performed. Nitrogen was added @ 150 kg ha-1. The results of the study indicated the significant influence of clay @ 40 t and humic acid @ 20 kg ha-1 were efficient in the control of NO - and NH + N leached through the column and a corresponding increase of retension of N in soil. The linear equation model was used to ascertain the influence of the physiochemical characteristics on the leaching of nutrients.