A field experiment was conducted during winter season of 2003-04 and 2004-05 at J.V.P.G. College, Baraut (Bagpat) in western Uttar Pradesh to study the optimum dose of nitrogen for component crop in the sole french bean ( Phaseolus vulgaris Linn.) and patato ( Solanum tubersum L.) and in intercropping system. Frenchbean and Potato yields increased significantly upto the application of 120 Kg N and 60 Kg K 2O/ha. Frenchbean equivalent yield was highest of 31.90 q/ha at 120 kg N/ha and 29.63 q/ha which were found 2.28 q/ha (7.9%) and 6.88 q/ha (28.2%) higher than the equivalent yield in sole potato and sole frenchbean, respectively. Intercropping attained 1.17 L.E.R. which indicates that land may be utilized by 17 per cent more than pure cropping.
