A field experiment was conducted at Agricultural College Farm, Dharwad to evaluate the effect of four row spacings (100 cm, 75 cm, 60 cm and 50 cm) and two phosphorus levels (60 kg and 120 kg P2O5/ ha) with control on leucaena during 1981-82 and 1982-83. Planting leucaena at 60 cm row spacing recorded singnificantly higher green and dry matter yields than 75 cm and 100 cm row spacings. The increase in total dry matter yield with 60 cm row spacing over 100 cm was to the extent of 36% and 29% during first and second year, respectively. The total dry matter yields at 60 cm row spacing were 111.5 q. and 167.4 q per ha. during first and second year. Application of either 60 kg or 120 kg P2O5 per ha recorded significantly higher green and dry matter yields of leucaena than the control treatment. Both the nitrogen and phosphorus uptake by leucaena were maximum at 60 cm row spacing and with 120 kg P2O5 per ha.