摘要：An experiment was conducted at two locations during spring 2008 at the New Developmental Farm (NDF) and the Cereals Crop Research Institute (CCRI). Two landraces of sweet corn Mansehra (MNS) and Swabi (SWB) were planted with Cv. Azam. Furthermore, four densities and N levels were used in randomized complete block (RCB) design with split-plot arrangement. Phenology, yield and yield components responded positively to locations, landraces, nitrogen and density. Signifi-cantly higher number of kernels ear1, grain weight and grain yield were found at NDF. Landrace SWB was tasseled and matured late, while Azam was recorded highest for kernel ear-1 (KPE), total grain weight (TGW) and grain yield (GY) followed by SWB. Moreover, days to tasseling and maturity, KPE, TGW, and GY in N-fertilized plots were significantly higher as compared to control. Maxi-mum GY was observed in plots with a density of 100000 plants ha1; however, it was comparable to GY obtained under the dense population of the plants (density of 120000 plants ha1).
