N-requirement for raising cut-shoot-potato crop

Experiments were conducted to find out the optimum dose of nitrogen for raising cut-shootpotato crop during 1987–88 and 1988–89 winter seasons. Application of nitrogen enhanced plant height from 48.3 cm to 77.4 cm, number of leaves per plant from 12.8 to 17.4, leaf length from 10.3 cm to 22.8 cm, foliage coverage at 40 DAP from 15.3 to 50.5% and at 60 DAP from 33.6 to 67.1%, respectively at N₀ and N₂₀₀ while higher doses of nitrogen significantly delayed both days to tuberisation (36 days) and maturity of crop (92.3 days). Most of the yield attributes including tuber yield (t/ha) were statistically similar for 120 and 160 kg N/ha indicating that the optimum dose of N is 120 kg/ha.