Abstract: The study was conducted to determine the effect of different levels of nitrogen (0, 30, 60, 90 kg ha -1) and phosphorus (0, 30, 60 kg ha -1) with a constant dose of potash (30 kg ha -1) on the growth and yield of chilli cultivar, sanam. The fertilizers used for nitrogen, phosphorus and potash were urea (46 % N), single super phosphate (18 % P2O5) and potassium sulphate (50 % K2O). The data recorded revealed that there was a significant difference in days to flowering, days to fruiting, number of branches per plant, plant height (cm), number of fruits per plant, length of fruit (cm) and total yield (kg ha -1). Minimum days to flowering (42 days) and days to fruiting (54 days) were recorded in plots fertilized with (30-60-30 kg NPK ha -1) and (30-30-30 kg NPK ha -1) respectively. Maximum number of branches per plant (10.00), plant height (98.27 cm), number of fruits per plant (51.73) and total yield (7679.66 kg ha -1) was recorded in plots fertilized with 90-60-30 kg NPK ha -1. However, maximum length of fruit was recorded at fertilizer level of 60-30-30 kg NPK ha -1. The differences in survival %age and single fruit weight were non significant. It is suggested that chilli cv. sanam should be fertilized with 90-60-30 kg NPK ha -1 under the agroclimatic conditions of Peshawar.