Abstract

No serious effort has been made to study the effect of rotations of eucalypt (Eucalyptus tereticornis) on the organic carbon and different forms of soil nitrogen. Hence the present investigation was undertaken. The ratios of total N to available N, total N to ammoniacal N and total N to nitrate N increased with increasing depth in soils under first rotation while it decreased with depth in the case of second rotation. Probably the increased mineralisation of organic matter observed in the second rotation would have resulted in the differential accumulation of different forms of nitrogen in deeper layers of soil